Microsoft CVE Summary

This report contains detail for the following vulnerabilities:

Tag CVE ID CVE Title
.NET Framework CVE-2018-8360 .NET Framework Information Disclosure Vulnerability
Adobe Flash Player ADV180020 August 2018 Adobe Flash Security Update
Device Guard CVE-2018-8200 Device Guard Code Integrity Policy Security Feature Bypass Vulnerability
Device Guard CVE-2018-8204 Device Guard Code Integrity Policy Security Feature Bypass Vulnerability
Internet Explorer CVE-2018-8316 Internet Explorer Remote Code Execution Vulnerability
Microsoft Browsers CVE-2018-8351 Microsoft Browser Information Disclosure Vulnerability
Microsoft Browsers CVE-2018-8403 Microsoft Browser Memory Corruption Vulnerability
Microsoft Browsers CVE-2018-8357 Microsoft Browser Elevation of Privilege Vulnerability
Microsoft Edge CVE-2018-8388 Microsoft Edge Spoofing Vulnerability
Microsoft Edge CVE-2018-8377 Microsoft Edge Memory Corruption Vulnerability
Microsoft Edge CVE-2018-8383 Microsoft Edge Spoofing Vulnerability
Microsoft Edge CVE-2018-8387 Microsoft Edge Memory Corruption Vulnerability
Microsoft Edge CVE-2018-8370 Microsoft Edge Information Disclosure Vulnerability
Microsoft Edge CVE-2018-8358 Microsoft Edge Security Feature Bypass Vulnerability
Microsoft Exchange Server CVE-2018-8374 Microsoft Exchange Server Tampering Vulnerability
Microsoft Exchange Server CVE-2018-8302 Microsoft Exchange Memory Corruption Vulnerability
Microsoft Graphics Component CVE-2018-8397 GDI+ Remote Code Execution Vulnerability
Microsoft Graphics Component CVE-2018-8400 DirectX Graphics Kernel Elevation of Privilege Vulnerability
Microsoft Graphics Component CVE-2018-8398 Windows GDI Information Disclosure Vulnerability
Microsoft Graphics Component CVE-2018-8406 DirectX Graphics Kernel Elevation of Privilege Vulnerability
Microsoft Graphics Component CVE-2018-8405 DirectX Graphics Kernel Elevation of Privilege Vulnerability
Microsoft Graphics Component CVE-2018-8401 DirectX Graphics Kernel Elevation of Privilege Vulnerability
Microsoft Graphics Component CVE-2018-8344 Microsoft Graphics Remote Code Execution Vulnerability
Microsoft Graphics Component CVE-2018-8396 Windows GDI Information Disclosure Vulnerability
Microsoft Graphics Component CVE-2018-8394 Windows GDI Information Disclosure Vulnerability
Microsoft Office CVE-2018-8375 Microsoft Excel Remote Code Execution Vulnerability
Microsoft Office ADV180021 Microsoft Office Defense in Depth Update
Microsoft Office CVE-2018-8376 Microsoft PowerPoint Remote Code Execution Vulnerability
Microsoft Office CVE-2018-8379 Microsoft Excel Remote Code Execution Vulnerability
Microsoft Office CVE-2018-8378 Microsoft Office Information Disclosure Vulnerability
Microsoft Office CVE-2018-8382 Microsoft Excel Information Disclosure Vulnerability
Microsoft Office CVE-2018-8412 Microsoft (MAU) Office Elevation of Privilege Vulnerability
Microsoft Scripting Engine CVE-2018-8389 Scripting Engine Memory Corruption Vulnerability
Microsoft Scripting Engine CVE-2018-8385 Scripting Engine Memory Corruption Vulnerability
Microsoft Scripting Engine CVE-2018-8355 Scripting Engine Memory Corruption Vulnerability
Microsoft Scripting Engine CVE-2018-8371 Scripting Engine Memory Corruption Vulnerability
Microsoft Scripting Engine CVE-2018-8372 Scripting Engine Memory Corruption Vulnerability
Microsoft Scripting Engine CVE-2018-8353 Scripting Engine Memory Corruption Vulnerability
Microsoft Scripting Engine CVE-2018-8373 Scripting Engine Memory Corruption Vulnerability
Microsoft Scripting Engine CVE-2018-8380 Chakra Scripting Engine Memory Corruption Vulnerability
Microsoft Scripting Engine CVE-2018-8390 Scripting Engine Memory Corruption Vulnerability
Microsoft Scripting Engine CVE-2018-8381 Chakra Scripting Engine Memory Corruption Vulnerability
Microsoft Scripting Engine CVE-2018-8266 Chakra Scripting Engine Memory Corruption Vulnerability
Microsoft Scripting Engine CVE-2018-8359 Scripting Engine Memory Corruption Vulnerability
Microsoft Scripting Engine CVE-2018-8384 Chakra Scripting Engine Memory Corruption Vulnerability
Microsoft Windows ADV180018 Microsoft Guidance to mitigate L1TF variant
Microsoft Windows CVE-2018-8346 LNK Remote Code Execution Vulnerability
Microsoft Windows CVE-2018-8345 LNK Remote Code Execution Vulnerability
Microsoft Windows PDF CVE-2018-8350 Windows PDF Remote Code Execution Vulnerability
SQL Server CVE-2018-8273 Microsoft SQL Server Remote Code Execution Vulnerability
Windows Authentication Methods CVE-2018-8340 AD FS Security Feature Bypass Vulnerability
Windows COM CVE-2018-8349 Microsoft COM for Windows Remote Code Execution Vulnerability
Windows Diagnostic Hub CVE-2018-0952 Diagnostic Hub Standard Collector Elevation Of Privilege Vulnerability
Windows Installer CVE-2018-8339 Windows Installer Elevation of Privilege Vulnerability
Windows Kernel CVE-2018-8341 Windows Kernel Information Disclosure Vulnerability
Windows Kernel CVE-2018-8404 Win32k Elevation of Privilege Vulnerability
Windows Kernel CVE-2018-8347 Windows Kernel Elevation of Privilege Vulnerability
Windows Kernel CVE-2018-8348 Windows Kernel Information Disclosure Vulnerability
Windows Kernel CVE-2018-8399 Win32k Elevation of Privilege Vulnerability
Windows NDIS CVE-2018-8343 Windows NDIS Elevation of Privilege Vulnerability
Windows RNDIS CVE-2018-8342 Windows NDIS Elevation of Privilege Vulnerability
Windows Shell CVE-2018-8414 Windows Shell Remote Code Execution Vulnerability
Windows Shell CVE-2018-8253 Microsoft Cortana Elevation of Privilege Vulnerability

CVE-2018-8204 - Device Guard Code Integrity Policy Security Feature Bypass Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8204
MITRE
NVD
CVE Title: Device Guard Code Integrity Policy Security Feature Bypass Vulnerability
Description:

A security feature bypass vulnerability exists in Device Guard that could allow an attacker to inject malicious code into a Windows PowerShell session. An attacker who successfully exploited this vulnerability could inject code into a trusted PowerShell process to bypass the Device Guard Code Integrity policy on the local machine.

To exploit the vulnerability, an attacker would first have to access the local machine, and then inject malicious code into a script that is trusted by the Code Integrity policy. The injected code would then run with the same trust level as the script and bypass the Code Integrity policy.

The update addresses the vulnerability by correcting how PowerShell exposes functions and processes user supplied code.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Security Feature Bypass

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8204
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 10 for 32-bit Systems 4343892 (Security Update) Important Security Feature Bypass 4338829 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 for x64-based Systems 4343892 (Security Update) Important Security Feature Bypass 4338829 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Security Feature Bypass 4338814 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Security Feature Bypass 4338814 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Security Feature Bypass 4338826 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Security Feature Bypass 4338826 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Security Feature Bypass 4338825 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Security Feature Bypass 4338825 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Security Feature Bypass 4338819 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Security Feature Bypass 4338819 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows Server 2016 4343887 (Security Update) Important Security Feature Bypass 4338814 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Security Feature Bypass 4338814 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Security Feature Bypass 4338825 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Security Feature Bypass 4338819 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8204 Matt Nelson (@enigma0x3) of SpecterOps
https://twitter.com/@enigma0x3,https://www.specterops.io/


Matt Graeber of SpecterOps
https://specterops.io/


CVE-2018-8253 - Microsoft Cortana Elevation of Privilege Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8253
MITRE
NVD
CVE Title: Microsoft Cortana Elevation of Privilege Vulnerability
Description:

An elevation of privilege vulnerability exists when Microsoft Cortana allows arbitrary website browsing on the lockscreen.

An attacker who successfully exploited the vulnerability could steal browser stored passwords or log on to websites as another user. To exploit the vulnerability, an attacker would require physical access to the console and the system must have Microsoft Cortana assistance enabled.

The security update addresses the vulnerability by preventing Microsoft Cortana from allowing arbitrary website browsing on the lockscreen.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Elevation of Privilege

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
N/A Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8253
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 4.00
Temporal: 3.60
Vector: CVSS:3.0/AV:P/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 4.00
Temporal: 3.60
Vector: CVSS:3.0/AV:P/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2016 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 4.00
Temporal: 3.60
Vector: CVSS:3.0/AV:P/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 4.00
Temporal: 3.60
Vector: CVSS:3.0/AV:P/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8253 Cedric Cochin of McAfee’s Advanced Threat Research (ATR) Team


CVE-2018-8266 - Chakra Scripting Engine Memory Corruption Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8266
MITRE
NVD
CVE Title: Chakra Scripting Engine Memory Corruption Vulnerability
Description:

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft Edge and then convince a user to view the website. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability.

The security update addresses the vulnerability by modifying how the Chakra scripting engine handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely N/A Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8266
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
ChakraCore Commit (Security Update) Critical Remote Code Execution None Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Maybe
Microsoft Edge on Windows 10 for 32-bit Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 for x64-based Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows Server 2016 4343887 (Security Update) Moderate Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8266 Bruno Keith
https://twitter.com/bkth_


CVE-2018-8316 - Internet Explorer Remote Code Execution Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8316
MITRE
NVD
CVE Title: Internet Explorer Remote Code Execution Vulnerability
Description:

A remote code execution vulnerability exists when Internet Explorer improperly validates hyperlinks before loading executable libraries.

An attacker who successfully exploited this vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

An attacker could host a specially crafted website designed to exploit the vulnerability through Internet Explorer and then convince a user to view the website. The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted content that could exploit the vulnerability. However, in all cases an attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email.

The updates address the vulnerability by correcting how Internet Explorer validates hyperlinks before loading executable libraries.


FAQ:

I am running Interenet Explorer 11 on Windows 7 or Windows Server 2008 R2. Why do I need to install the Security Only update and not the IE Cumulative Update?

The binary affected by this vulnerability is in the code path for Windows 7 and not for Internet Explorer 11. Customers Internet Explorer 11 on Windows 7 or Windows Server 2008 R2 and who normally install the IE Cumulative updates should install the Windows Security Only update to be protected from this vulnerability.



Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8316
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Internet Explorer 10 on Windows Server 2012 4343901 (Monthly Rollup)
4343205 (IE Cumulative)
Important Remote Code Execution 4338830
4339093
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for 32-bit Systems 4343892 (Security Update) Important Remote Code Execution 4338829 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for x64-based Systems 4343892 (Security Update) Important Remote Code Execution 4338829 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Remote Code Execution 4338814 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Remote Code Execution 4338814 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Remote Code Execution 4338826 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Remote Code Execution 4338826 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Remote Code Execution 4338825 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Remote Code Execution 4338825 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Remote Code Execution 4338819 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Remote Code Execution 4338819 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Remote Code Execution 4338818
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Remote Code Execution 4338818
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for 32-bit systems 4343898 (Monthly Rollup)
4343205 (IE Cumulative)
Important Remote Code Execution 4338815
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for x64-based systems 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Important Remote Code Execution 4339093
4338815
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows RT 8.1 4343898 (Monthly Rollup) Important Remote Code Execution 4338815 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Remote Code Execution 4338818
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2012 R2 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Important Remote Code Execution 4339093
4338815
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2016 4343887 (Security Update) Important Remote Code Execution 4338814 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8316 Anonymous working with Trend Micro's Zero Day Initiative
http://www.zerodayinitiative.com/


ADV180018 - Microsoft Guidance to mitigate L1TF variant

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
ADV180018
MITRE
NVD
CVE Title: Microsoft Guidance to mitigate L1TF variant
Description:

Executive Summary

On January 3, 2018, Microsoft released an advisory and security updates for a new class of hardware vulnerabilities involving speculative execution side channels (known as Spectre and Meltdown). Microsoft is aware of a new speculative execution side channel vulnerability known as L1 Terminal Fault (L1TF) which has been assigned multiple CVEs as noted in the following table. This vulnerability affects Intel® Core® processors and Intel® Xeon® processors. For more information, see Intel’s advisory at: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00161.html.

CVE Name Applicability
CVE-2018-3615 L1 Terminal Fault Intel® Software Guard Extensions (SGX)
CVE-2018-3620 L1 Terminal Fault Operating System (OS), System Management Mode (SMM)
CVE-2018-3646 L1 Terminal Fault Virtual Machine Manager (VMM)

An attacker who has successfully exploited L1TF may be able to read privileged data across trust boundaries. In shared resource environments (such that exist in some cloud services configurations), this vulnerability could allow one virtual machine to improperly access information from another. An attacker would need prior access to the system or the ability to run code on the system to leverage this vulnerability. For a technical description of L1TF please see our Security Research and Defense (SRD) blog.

Microsoft has released several updates to help mitigate this vulnerability. To get all available protections, firmware (microcode) and software updates are required. We have also taken action to secure our cloud services. See the Microsoft cloud customers section for more details.

Microsoft has not received any information to indicate that this vulnerability has been used to attack customers at this time. Microsoft continues to work closely with industry partners, including chip makers, hardware OEMs, and app vendors to protect customers from the speculative execution class of hardware vulnerabilities.

Recommended Actions

  1. The best protection is to keep your computers up to date. You can do this by taking advantage of automatic updates. Learn how to turn on automatic updates here.

  2. Enterprise customers should:

    1. Review this advisory in detail for guidance by product or service and register for the security notifications mailer to be alerted of content changes to this advisory. See Microsoft Technical Security Notifications.

    2. Inventory the processors in use across the enterprise to determine risk exposure and help inform the required protections for L1TF.

    3. Inventory the use of Virtualization Based Security (VBS) across the enterprise and especially in client systems to help inform the required protections.

    4. Evaluate the risk posed by L1TF to enterprise environments. In general terms, any system that was deemed to need protection for CVE-2017-5715 (Spectre Variant 2, Branch Target Injection) would need protection for L1TF.

  3. Verify the status of protection for CVE-2018-3620 using the PowerShell script Get-SpeculationControlSettings. For more information and to obtain the PowerShell script see Understanding Get-SpeculationControlSettings PowerShell script output.

Potential performance impacts

In testing, Microsoft has seen some performance impact with these mitigations depending on the configuration of the system and what mitigations are needed. For most consumer devices, we have not observed a noticeable performance impact after applying the updates.  Customers that use Virtualization Based Security (VBS) or versions of Hyper-V prior to Windows Server 2016 may need to disable Hyper-Threading to fully address the risk from L1 Terminal Fault (L1TF), resulting in performance degradation. Performance impact will vary by hardware and the workloads running on the system. As the most common device and server configuration is to have Hyper-Threading enabled, the performance impact will depend on whether the user or administrator takes the action to disable Hyper-Threading on the system. As noted earlier, Windows Server 2016 provides an option to enable the Hyper-V Core Scheduler which mitigates the L1TF attack vector while allowing Hyper-Threading to remain enabled, resulting in a minimal performance impact For information on performance impact by Intel, please see: www.intel.com/securityfirst.

Advisory Details

Vulnerabilities Description

Speculative execution side-channel vulnerabilities such as L1 Terminal Fault (L1TF) can be used to read the content of memory across a trusted boundary and if exploited, can lead to information disclosure. There are multiple vectors by which an attacker could trigger the vulnerabilities depending on the configured environment. For a detailed view of affected scenarios and Microsoft’s approach to mitigating L1TF please see our Security Research and Defense (SRD) blog. The following table summarizes the potential relevance of L1TF to various attack scenarios and the applicable CVE:

Attack Category Attack Scenario L1TF CVE
Inter-VM Hypervisor-to-guest CVE-2018-3646
Host-to-guest CVE-2018-3646
Guest-to-guest CVE-2018-3646
Intra-OS Kernel-to-user CVE-2018-3620
Process-to-process CVE-2018-3620
Intra-process CVE-2018-3620
Enclave SGX-to-any CVE-2018-3615
VSM-to-any CVE-2018-3646

Microsoft cloud customers

Microsoft has deployed mitigations across our cloud services which reinforce the isolation between customers.

Customers who host untrusted code inside their applications should see Guidance for mitigating speculative execution side-channel vulnerabilities in Azure.

Microsoft Windows client customers

Customers using Windows client operating systems on systems with affected Intel processors may need to apply both firmware (Microcode) and software updates, depending on how the system is configured. However, most devices running Windows client operating systems will only need Windows software updates for protection. We have not observed performance degradation from these changes. The following table outlines the requirements for full protection for each CVE:

CVE Windows Changes Requires microcode? Requires additional action?
CVE-2018-3620 Kernel updates No No*
CVE-2018-3646 Hypervisor updates Yes** Yes, if using VBS or Hyper-V

* Protection for CVE-2018-3620 builds on the protection for CVE-2017-5354 (Meltdown) which is enabled by default on client. Customers that have disabled the protection for CVE-2017-5354 must re-enable it to gain protection for CVE-2018-3620.

** The required microcode is the same microcode that addresses CVE-2018-3639 and CVE-2018-3640.

Customers using Hyper-V or features that rely on Virtualization Based Security (VBS) may need to take additional action to be fully protected:

  1. Installation of Windows Security updates (See the Affected Products table in this advisory).
  2. Installation of firmware updates provided by the device’s OEM.
  3. Disabling Hyper-Threading (See FAQ #1). Note: Disabling Hyper-Threading can affect system performance. Please see Intel’s guidance at www.intel.com/securityfirst for more information.

Windows Virtualization Based Security (VBS) is foundational to Windows 10 security. All VBS features including Hypervisor-enforced Code Integrity (HVCI) and VBS enclaves depend on confidentiality to maintain a strong security boundary. The L1TF vulnerability introduces risk that the confidentiality of VBS secrets could be compromised via a side-channel attack when Hyper-Threading (HT) is enabled, weakening the security boundary provided by VBS. Even with this increased risk, VBS still provides valuable security benefits and mitigates a range of attacks with HT enabled. Hence, we recommend that VBS continue to be used on HT-enabled systems. Customers who want to eliminate the potential risk of the L1TF vulnerability on the confidentiality of VBS should consider disabling HT to mitigate this additional risk.

Windows client operating system users who are using Hyper-V for the security guarantees provided by VM isolation should disable HT to protect against L1TF.

Microsoft Windows Server customers

Customers using Windows Server operating systems may need to apply both firmware (microcode) and software updates, depending on how the system is configured. The followoing table outlines the requirements for full protection for each CVE:

CVE Windows Server changes Requires microcode? Requires additional action?
CVE-2018-3620 Kernel updates No Yes*
CVE-2018-3646 Hypervisor updates Yes** Yes, if using VBS or Hyper-V and Hyper-Threading is enabled

* Protection for CVE-2018-3620 builds on the protection for CVE-2017-5354 (Meltdown) which is disabled by default on Windows Server. To obtain protection for CVE-2018-3620, customers must enable the protection for CVE-2017-5354 (See FAQ #2).

** The required microcode is the same microcode that addresses CVE-2018-3639 and CVE-2018-3640.

Detailed guidance on the actions required for Windows Server customers can be found in Microsoft Knowledge Base Article 4457951.

Microsoft Surface customers

Customers using Microsoft Surface and Surface Book products need to follow the guidance for Windows Client outlined on this advisory. See Microsoft Knowledge Base Article 4073065 for more information about affected Surface products and availability of the microcode updates.

Microsoft Hololens customers

Microsoft HoloLens is unaffected by L1TF because it does not use an affected Intel processor.

FAQ

1. How do I disable Hyper-Threading on my device?

The steps necessary to disable Hyper-Threading will differ from OEM to OEM but are generally part of the BIOS or firmware setup and configuration tools.

2. How do I enable the mitigation for CVE-2017-5354 (Meltdown)?

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. You can then restore the registry if a problem occurs. For more information about how to back up and restore the registry, see Microsoft Knowledge Base 322756 How to back up and restore the registry in Windows.

To enable protection for CVE-2017-5315 and CVE 2017-5354:

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management" /v FeatureSettingsOverride /t REG_DWORD /d 0 /f

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management" /v FeatureSettingsOverrideMask /t REG_DWORD /d 3 /f

Restart the computer for the changes to take effect.

3. What is VBS and how do I know if I am using it?

Virtualization Based Security (VBS) uses hardware virtualization features to create and isolate a secure region of memory from the normal operating system and is used by security features such as Device Guard, Application Guard, Credential Guard, and Hypervisor Code Integrity (HVCI). VBS is supported in the following versions of Windows:

  • Windows 10 Version 1803
  • Windows 10 Version 1709
  • Windows 10 Version 1703
  • Windows 10 Version 1607
  • Windows Server, version 1803
  • Windows Server, version 1709
  • Windows Server 2016

To determine if VBS is enabled, run MSINFO32.EXE and look for the Virtualization-based Security line item under the System Summary node.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Information Disclosure

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

ADV180018
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 10 for 32-bit Systems 4343892 (Security Update) Important Information Disclosure 4338829 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 10 for x64-based Systems 4343892 (Security Update) Important Information Disclosure 4338829 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Information Disclosure 4338814 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Information Disclosure 4338814 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Information Disclosure 4338826 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Information Disclosure 4338826 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Information Disclosure 4338825 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Information Disclosure 4338825 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Information Disclosure 4338819 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Information Disclosure 4338819 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 8.1 for 32-bit systems 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Information Disclosure
4338815
Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows 8.1 for x64-based systems 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Information Disclosure
4338815
Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows RT 8.1 4343898 (Monthly Rollup) Important Information Disclosure 4338815 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 4341832 (Security Update) Important Information Disclosure None Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 4341832 (Security Update) Important Information Disclosure None Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server 2008 for x64-based Systems Service Pack 2 4341832 (Security Update) Important Information Disclosure None Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 4341832 (Security Update) Important Information Disclosure None Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server 2012 4343896 (Security Only)
4343901 (Monthly Rollup)
Important Information Disclosure
4338830
Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server 2012 (Server Core installation) 4343896 (Security Only)
4343901 (Monthly Rollup)
Important Information Disclosure
4338830
Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server 2012 R2 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Information Disclosure
4338815
Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server 2012 R2 (Server Core installation) 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Information Disclosure
4338815
Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server 2016 4343887 (Security Update) Important Information Disclosure 4338814 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Information Disclosure 4338814 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Information Disclosure 4338825 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Information Disclosure 4338819 Base: 7.10
Temporal: 7.10
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Yes

Acknowledgements

CVE ID Acknowledgements
ADV180018 Microsoft would like to thank Raoul Strackx, Jo Van Bulck, and Frank Piessens of imec-DistriNet, KU Leuven; Marina Minkin, Technion; Ofir Weisse, University of Michigan; Daniel Genkin, University of Michigan; Baris Kasikci, University of Michigan; Mark Silberstein, Technion; Thomas F. Wenisch, University of Michigan; Yuval Yarom, University of Adelaide and Data61; and Lei Shie, Qihoo360 CERT for reporting this and working with us on coordinated disclosure.
https://www.360.com


CVE-2018-8358 - Microsoft Edge Security Feature Bypass Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8358
MITRE
NVD
CVE Title: Microsoft Edge Security Feature Bypass Vulnerability
Description:

A security feature bypass vulnerability exists when Microsoft Edge improperly handles redirect requests. The vulnerability allows Microsoft Edge to bypass Cross-Origin Resource Sharing (CORS) redirect restrictions, and to follow redirect requests that should otherwise be ignored. An attacker who successfully exploited the vulnerability could force the browser to send data that would otherwise be restricted to a destination website of the attacker's choice.

In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft Edge and then convince a user to view the website. The attacker could also take advantage of compromised websites, and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability.

The security update addresses the vulnerability by modifying how affected Microsoft Edge handles redirect requests.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Security Feature Bypass

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely N/A Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8358
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Microsoft Edge on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Security Feature Bypass 4338814 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Security Feature Bypass 4338814 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows Server 2016 4343887 (Security Update) Low Security Feature Bypass 4338814 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8358 dannywei of Tencent Security Xuanwu Lab
https://xlab.tencent.com/


exp-sky (Kai Song) of Tencent Security Xuanwu Lab
http://xlab.tencent.com/


CVE-2018-8360 - .NET Framework Information Disclosure Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8360
MITRE
NVD
CVE Title: .NET Framework Information Disclosure Vulnerability
Description:

An information disclosure vulnerability exists in Microsoft .NET Framework that could allow an attacker to access information in multi-tenant environments. The vulnerability is caused when .NET Framework is used in high-load/high-density network connections where content from one stream can blend into another stream.

To exploit the vulnerability, an attacker who can access one tenant in a high-load/high-density environment could potentially trigger multi-tenanted data exposure from one customer to another.

The security update addresses the vulnerability by correcting the way .NET Framework handles high-load/high-density network connections.


FAQ:

What type of information could be disclosed by this vulnerability?

The type of information that could be disclosed if an attacker successfully exploited this vulnerability is unauthorized file system access - reading from file system.



Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Information Disclosure

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8360
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 4344151 (Monthly Rollup)
4344176 (Security Only)
Important Information Disclosure 4291501; 4340559
3142023
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 4344151 (Monthly Rollup)
4344176 (Security Only)
Important Information Disclosure 4291501; 4340559
3142023
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 4344151 (Monthly Rollup)
4344176 (Security Only)
Important Information Disclosure 4291501; 4340559
3142023
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 4344151 (Monthly Rollup)
4344176 (Security Only)
Important Information Disclosure 4291501; 4340559
3142023
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 4344151 (Monthly Rollup)
4344176 (Security Only)
Important Information Disclosure 4291501; 4340559
3142023
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 4344151 (Monthly Rollup)
4344176 (Security Only)
Important Information Disclosure 4291501; 4340559
3142023
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.5 on Windows 10 for 32-bit Systems 4343892 (Security Update) Important Information Disclosure 4338829 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows 10 for x64-based Systems 4343892 (Security Update) Important Information Disclosure 4338829 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Information Disclosure 4338814 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Information Disclosure 4338814 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Information Disclosure 4338826 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Information Disclosure 4338826 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Information Disclosure 4338825 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Information Disclosure 4338825 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Information Disclosure 4338819 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Information Disclosure 4338819 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems 4344153 (Monthly Rollup)
4344178 (Security Only)
Important Information Disclosure 4291497; 4340558
3142026; 3142030
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems 4344153 (Monthly Rollup)
4344178 (Security Only)
Important Information Disclosure 4291497; 4340558
3142026; 3142030
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.5 on Windows Server 2012 4344150 (Monthly Rollup)
4344175 (Security Only)
Important Information Disclosure 4291495; 4340557
3142025
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) 4344150 (Monthly Rollup)
4344175 (Security Only)
Important Information Disclosure 4291495; 4340557
3142025
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.5 on Windows Server 2012 R2 4344153 (Monthly Rollup)
4344178 (Security Only)
Important Information Disclosure 4291497; 4340558
3142026; 3142030
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) 4344153 (Monthly Rollup)
4344178 (Security Only)
Important Information Disclosure 4291497; 4340558
3142026; 3142030
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.5 on Windows Server 2016 4343887 (Security Update) Important Information Disclosure 4338814 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Information Disclosure 4338814 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Information Disclosure 4338825 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5 on Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Information Disclosure 4338819 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 4344152 (Monthly Rollup)
4344177 (Security Only)
Important Information Disclosure 4291493; 4340556
3142024
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 4344152 (Monthly Rollup)
4344177 (Security Only)
Important Information Disclosure 4291493; 4340556
3142024
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4344152 (Monthly Rollup)
4344177 (Security Only)
Important Information Disclosure 4291493; 4340556
3142024
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4344152 (Monthly Rollup)
4344177 (Security Only)
Important Information Disclosure 4291493; 4340556
3142024
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4344152 (Monthly Rollup)
4344177 (Security Only)
Important Information Disclosure 4291493; 4340556
3142024
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1 4344149 (Monthly Rollup)
4344173 (Security Only)
Important Information Disclosure 4291493, 4340556
4020507
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1 4344149 (Monthly Rollup)
4344173 (Security Only)
Important Information Disclosure 4291493, 4340556
4020507
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems 4344147 (Monthly Rollup)
4344171 (Security Only)
Important Information Disclosure 4291497; 4340558
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems 4344147 (Monthly Rollup)
4344171 (Security Only)
Important Information Disclosure 4291497; 4340558
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows RT 8.1 4344147 (Monthly Rollup) Important Information Disclosure 4291497; 4340558 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 4344149 (Monthly Rollup)
4344173 (Security Only)
Important Information Disclosure 4291501; 4340559
4020507
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2 4344149 (Monthly Rollup)
4344173 (Security Only)
Important Information Disclosure 4291501; 4340559
4020507
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4344149 (Monthly Rollup)
4344173 (Security Only)
Important Information Disclosure 4291493, 4340556
4020507
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4344149 (Monthly Rollup)
4344173 (Security Only)
Important Information Disclosure 4291493, 4340556
4020507
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows Server 2012 4344148 (Monthly Rollup)
4344172 (Security Only)
Important Information Disclosure 4291495; 4340557
4020506
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) 4344148 (Monthly Rollup)
4344172 (Security Only)
Important Information Disclosure 4291495; 4340557
4020506
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 4344147 (Monthly Rollup)
4344171 (Security Only)
Important Information Disclosure 4291497; 4340558
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) 4344147 (Monthly Rollup)
4344171 (Security Only)
Important Information Disclosure 4291497; 4340558
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Information Disclosure 4338814 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Information Disclosure 4338814 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 4343887 (Security Update) Important Information Disclosure 4338814 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Information Disclosure 4338814 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems 4343892 (Security Update) Important Information Disclosure 4338829 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems 4343892 (Security Update) Important Information Disclosure 4338829 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows 7 for 32-bit Systems Service Pack 1 4344146 (Monthly Rollup)
4344167 (Security Only)
Important Information Disclosure 4291493, 4340556
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows 7 for x64-based Systems Service Pack 1 4344146 (Monthly Rollup)
4344167 (Security Only)
Important Information Disclosure 4291493, 4340556
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows 8.1 for 32-bit systems 4344145 (Monthly Rollup)
4344166 (Security Only)
Important Information Disclosure 4291497; 4340558
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows 8.1 for x64-based systems 4344145 (Monthly Rollup)
4344166 (Security Only)
Important Information Disclosure 4291497; 4340558
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows RT 8.1 4344145 (Monthly Rollup) Important Information Disclosure 4291497; 4340558 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4344146 (Monthly Rollup)
4344167 (Security Only)
Important Information Disclosure 4291493, 4340556
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4344146 (Monthly Rollup)
4344167 (Security Only)
Important Information Disclosure 4291493, 4340556
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2012 4344144 (Monthly Rollup)
4344165 (Security Only)
Important Information Disclosure 4291495; 4340557
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) 4344144 (Monthly Rollup)
4344165 (Security Only)
Important Information Disclosure 4291495; 4340557
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2012 R2 4344145 (Monthly Rollup)
4344166 (Security Only)
Important Information Disclosure 4291497; 4340558
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation) 4344145 (Monthly Rollup)
4344166 (Security Only)
Important Information Disclosure 4291497; 4340558
Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft .NET Framework 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Information Disclosure 4338825 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Information Disclosure 4338825 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.7.1/4.7.2 on Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Information Disclosure 4338825 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.7.2 on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Information Disclosure 4338819 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.7.2 on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Information Disclosure 4338819 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.7.2 on Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Information Disclosure 4338819 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.7/4.7.1/4.7.2 on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Information Disclosure 4338826 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Microsoft .NET Framework 4.7/4.7.1/4.7.2 on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Information Disclosure 4338826 Base: N/A
Temporal: N/A
Vector: N/A
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8360 None

CVE-2018-8370 - Microsoft Edge Information Disclosure Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8370
MITRE
NVD
CVE Title: Microsoft Edge Information Disclosure Vulnerability
Description:

A information disclosure vulnerability exists when WebAudio Library improperly handles audio requests.

An attacker who has successfully exploited this vulnerability might be able to read privileged data across trust boundaries. In browsing scenarios, an attacker could convince a user to visit a malicious site and leverage the vulnerability to obtain privileged information from the browser process, such as sensitive data from other opened tabs. An attacker could also inject malicious code into advertising networks used by trusted sites or embed malicious code on a compromised, but trusted, site.

The update addresses the vulnerability by correcting how the WebAudio Library handles audio requests.


FAQ:

What type of information could be disclosed by this vulnerability?

The type of information that could be disclosed if an attacker successfully exploited this vulnerability is uninitialized memory.



Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Information Disclosure

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely N/A Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8370
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Microsoft Edge on Windows 10 for 32-bit Systems 4343892 (Security Update) Important Information Disclosure 4338829 Base: 3.10
Temporal: 3.10
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Yes
Microsoft Edge on Windows 10 for x64-based Systems 4343892 (Security Update) Important Information Disclosure 4338829 Base: 3.10
Temporal: 3.10
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Yes
Microsoft Edge on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Information Disclosure 4338814 Base: 3.10
Temporal: 3.10
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Yes
Microsoft Edge on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Information Disclosure 4338814 Base: 3.10
Temporal: 3.10
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Yes
Microsoft Edge on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Information Disclosure 4338826 Base: 3.10
Temporal: 3.10
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Yes
Microsoft Edge on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Information Disclosure 4338826 Base: 3.10
Temporal: 3.10
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Yes
Microsoft Edge on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Information Disclosure 4338825 Base: 3.10
Temporal: 3.10
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Yes
Microsoft Edge on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Information Disclosure 4338825 Base: 3.10
Temporal: 3.10
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Yes
Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Information Disclosure 4338819 Base: 3.10
Temporal: 3.10
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Yes
Microsoft Edge on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Information Disclosure 4338819 Base: 3.10
Temporal: 3.10
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Yes
Microsoft Edge on Windows Server 2016 4343887 (Security Update) Low Information Disclosure 4338814 Base: 3.10
Temporal: 3.10
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8370 None

CVE-2018-8371 - Scripting Engine Memory Corruption Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8371
MITRE
NVD
CVE Title: Scripting Engine Memory Corruption Vulnerability
Description:

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Internet Explorer and then convince a user to view the website. An attacker could also embed an ActiveX control marked "safe for initialization" in an application or Microsoft Office document that hosts the IE rendering engine. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability.

The security update addresses the vulnerability by modifying how the scripting engine handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Moderate Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely Exploitation More Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8371
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Internet Explorer 10 on Windows Server 2012 4343901 (Monthly Rollup)
4343205 (IE Cumulative)
Moderate Remote Code Execution 4338830
4339093
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for 32-bit Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for x64-based Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338818
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338818
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for 32-bit systems 4343898 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338815
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for x64-based systems 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Critical Remote Code Execution 4339093
4338815
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows RT 8.1 4343898 (Monthly Rollup) Critical Remote Code Execution 4338815 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Moderate Remote Code Execution 4338818
4339093
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2012 R2 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Moderate Remote Code Execution 4339093
4338815
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2016 4343887 (Security Update) Moderate Remote Code Execution 4338814 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2 4343205 (IE Cumulative) Moderate Remote Code Execution 4339093 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2 4343205 (IE Cumulative) Moderate Remote Code Execution 4339093 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8371 Simon Zuckerbraun working with Trend Micro's Zero Day Initiative
http://www.zerodayinitiative.com/


CVE-2018-8372 - Scripting Engine Memory Corruption Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8372
MITRE
NVD
CVE Title: Scripting Engine Memory Corruption Vulnerability
Description:

A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

In a web-based attack scenario, an attacker could host a specially crafted website designed to exploit the vulnerability through a Microsoft browser and then convince a user to view the website. An attacker could also embed an ActiveX control marked "safe for initialization" in an application or Microsoft Office document that hosts the browser rendering engine. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability.

The security update addresses the vulnerability by modifying how the scripting engine handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely N/A Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8372
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
ChakraCore Commit (Security Update) Critical Remote Code Execution None Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Maybe
Internet Explorer 11 on Windows 10 for 32-bit Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for x64-based Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338818
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338818
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for 32-bit systems 4343898 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338815
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for x64-based systems 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Critical Remote Code Execution 4339093
4338815
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows RT 8.1 4343898 (Monthly Rollup) Critical Remote Code Execution 4338815 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Moderate Remote Code Execution 4338818
4339093
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2012 R2 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Moderate Remote Code Execution 4339093
4338815
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2016 4343887 (Security Update) Moderate Remote Code Execution 4338814 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 for 32-bit Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 for x64-based Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows Server 2016 4343887 (Security Update) Moderate Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8372 Yuki Chen of Qihoo 360 Vulcan Team
http://www.360.com/


Lokihardt of Google Project Zero
https://www.google.com


Qixun Zhao of Qihoo 360 Vulcan Team​
https://twitter.com/S0rryMybad,http://www.360.com/


CVE-2018-8373 - Scripting Engine Memory Corruption Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8373
MITRE
NVD
CVE Title: Scripting Engine Memory Corruption Vulnerability
Description:

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Internet Explorer and then convince a user to view the website. An attacker could also embed an ActiveX control marked "safe for initialization" in an application or Microsoft Office document that hosts the IE rendering engine. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability.

The security update addresses the vulnerability by modifying how the scripting engine handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Detected Not Applicable Yes Yes

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8373
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Internet Explorer 10 on Windows Server 2012 4343901 (Monthly Rollup)
4343205 (IE Cumulative)
Moderate Remote Code Execution 4338830
4339093
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for 32-bit Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for x64-based Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338818
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338818
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for 32-bit systems 4343898 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338815
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for x64-based systems 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Critical Remote Code Execution 4339093
4338815
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows RT 8.1 4343898 (Monthly Rollup) Critical Remote Code Execution 4338815 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Moderate Remote Code Execution 4338818
4339093
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2012 R2 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Moderate Remote Code Execution 4339093
4338815
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2016 4343887 (Security Update) Moderate Remote Code Execution 4338814 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2 4343205 (IE Cumulative) Moderate Remote Code Execution 4339093 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2 4343205 (IE Cumulative) Moderate Remote Code Execution 4339093 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8373 Elliot Cao of Trend Micro Security Research working with Trend Micro's Zero Day Initiative
http://www.zerodayinitiative.com/


CVE-2018-8375 - Microsoft Excel Remote Code Execution Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8375
MITRE
NVD
CVE Title: Microsoft Excel Remote Code Execution Vulnerability
Description:

A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Excel. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) containing a specially crafted file designed to exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file.

The security update addresses the vulnerability by correcting how Microsoft Excel handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8375
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Microsoft Excel 2016 Click-to-Run (C2R) for 32-bit editions Click to Run (Security Update) Important Remote Code Execution None Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Excel 2016 Click-to-Run (C2R) for 64-bit editions Click to Run (Security Update) Important Remote Code Execution None Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Excel 2010 Service Pack 2 (32-bit editions) 4032223 (Security Update) Important Remote Code Execution 4022209 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Excel 2010 Service Pack 2 (64-bit editions) 4032223 (Security Update) Important Remote Code Execution 4022209 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Excel 2013 RT Service Pack 1 4032241 (Security Update) Important Remote Code Execution 4022191 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Excel 2013 Service Pack 1 (32-bit editions) 4032241 (Security Update) Important Remote Code Execution 4022191 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Excel 2013 Service Pack 1 (64-bit editions) 4032241 (Security Update) Important Remote Code Execution 4022191 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Excel 2016 (32-bit edition) 4032229 (Security Update) Important Remote Code Execution 4022174 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Excel 2016 (64-bit edition) 4032229 (Security Update) Important Remote Code Execution 4022174 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Excel Viewer 2007 Service Pack 3 4032213 (Security Update) Important Remote Code Execution 4022151 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Office 2016 for Mac Release Notes (Security Update) Important Remote Code Execution None Base: N/A
Temporal: N/A
Vector: N/A
No
Microsoft Office Compatibility Pack Service Pack 3 4032212 (Security Update) Important Remote Code Execution 4022196 Base: N/A
Temporal: N/A
Vector: N/A
Maybe

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8375 Ying Xinlei of IceSword Lab, Qihoo 360


CVE-2018-8376 - Microsoft PowerPoint Remote Code Execution Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8376
MITRE
NVD
CVE Title: Microsoft PowerPoint Remote Code Execution Vulnerability
Description:

A remote code execution vulnerability exists in Microsoft PowerPoint software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Office PowerPoint software. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file designed to exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file.

Note that the Preview Pane is not an attack vector for this vulnerability. The security update addresses the vulnerability by correcting how Microsoft PowerPoint handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
N/A Exploitation More Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8376
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Microsoft PowerPoint 2010 Service Pack 2 (32-bit editions) 4018310 (Security Update) Important Remote Code Execution 3128027 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft PowerPoint 2010 Service Pack 2 (64-bit editions) 4018310 (Security Update) Important Remote Code Execution 3128027 Base: N/A
Temporal: N/A
Vector: N/A
Maybe

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8376 angkang(@dnpushme) & Jinquan(@jq0904) & Wanglu of Qihoo360 CoreSecurity(@360CoreSec)


CVE-2018-8377 - Microsoft Edge Memory Corruption Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8377
MITRE
NVD
CVE Title: Microsoft Edge Memory Corruption Vulnerability
Description:

A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory. The vulnerability could corrupt memory in such a way that enables an attacker to execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

An attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft Edge, and then convince a user to view the website. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements by adding specially crafted content that could exploit the vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by way of enticement in an email or Instant Messenger message, or by getting them to open an attachment sent through email.

The security update addresses the vulnerability by modifying how Microsoft Edge handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely N/A Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8377
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Microsoft Edge on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8377 Marcin Towalski (@mtowalski1)
https://twitter.com/mtowalski1


CVE-2018-8380 - Chakra Scripting Engine Memory Corruption Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8380
MITRE
NVD
CVE Title: Chakra Scripting Engine Memory Corruption Vulnerability
Description:

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft Edge and then convince a user to view the website. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability.

The security update addresses the vulnerability by modifying how the Chakra scripting engine handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely N/A Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8380
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
ChakraCore Commit (Security Update) Critical Remote Code Execution None Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Maybe
Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8380 None

CVE-2018-8381 - Chakra Scripting Engine Memory Corruption Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8381
MITRE
NVD
CVE Title: Chakra Scripting Engine Memory Corruption Vulnerability
Description:

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft Edge and then convince a user to view the website. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability.

The security update addresses the vulnerability by modifying how the Chakra scripting engine handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely N/A Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8381
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
ChakraCore Commit (Security Update) Critical Remote Code Execution None Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Maybe
Microsoft Edge on Windows 10 for 32-bit Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 for x64-based Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows Server 2016 4343887 (Security Update) Moderate Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8381 None

CVE-2018-8383 - Microsoft Edge Spoofing Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8383
MITRE
NVD
CVE Title: Microsoft Edge Spoofing Vulnerability
Description:

A spoofing vulnerability exists when Microsoft Edge does not properly parse HTTP content. An attacker who successfully exploited this vulnerability could trick a user by redirecting the user to a specially crafted website. The specially crafted website could either spoof content or serve as a pivot to chain an attack with other vulnerabilities in web services.

To exploit the vulnerability, the user must click a specially crafted URL. In an email attack scenario, an attacker could send an email message containing the specially crafted URL to the user in an attempt to convince the user to click it.

In a web-based attack scenario, an attacker could host a specially crafted website designed to appear as a legitimate website to the user. However, the attacker would have no way to force the user to visit the specially crafted website. The attacker would have to convince the user to visit the specially crafted website, typically by way of enticement in an email or instant message, and then convince the user to interact with content on the website.

The update addresses the vulnerability by correcting how Microsoft Edge parses HTTP responses.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Spoofing

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely N/A Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8383
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Spoofing 4338819 Base: 4.30
Temporal: 3.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Spoofing 4338819 Base: 4.30
Temporal: 3.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8383 James Lee @Windowsrcer of Kryptos Logic
https://twitter.com/Windowsrcer,https://kryptoslogic.com


Rafay Baloch
https://twitter.com/rafaybaloch


CVE-2018-8384 - Chakra Scripting Engine Memory Corruption Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8384
MITRE
NVD
CVE Title: Chakra Scripting Engine Memory Corruption Vulnerability
Description:

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft Edge and then convince a user to view the website. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability.

The security update addresses the vulnerability by modifying how the Chakra scripting engine handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely N/A Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8384
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
ChakraCore Commit (Security Update) Critical Remote Code Execution None Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Maybe

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8384 Lokihardt of Google Project Zero
https://www.google.com


CVE-2018-8385 - Scripting Engine Memory Corruption Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8385
MITRE
NVD
CVE Title: Scripting Engine Memory Corruption Vulnerability
Description:

A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

In a web-based attack scenario, an attacker could host a specially crafted website designed to exploit the vulnerability through a Microsoft browser and then convince a user to view the website. An attacker could also embed an ActiveX control marked "safe for initialization" in an application or Microsoft Office document that hosts the browser rendering engine. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability.

The security update addresses the vulnerability by modifying how the scripting engine handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely Exploitation More Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8385
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
ChakraCore Commit (Security Update) Critical Remote Code Execution None Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Maybe
Internet Explorer 10 on Windows Server 2012 4343901 (Monthly Rollup)
4343205 (IE Cumulative)
Moderate Remote Code Execution 4338830
4339093
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for 32-bit Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for x64-based Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338818
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338818
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for 32-bit systems 4343898 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338815
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for x64-based systems 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Critical Remote Code Execution 4339093
4338815
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows RT 8.1 4343898 (Monthly Rollup) Critical Remote Code Execution 4338815 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Moderate Remote Code Execution 4338818
4339093
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2012 R2 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Moderate Remote Code Execution 4339093
4338815
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2016 4343887 (Security Update) Moderate Remote Code Execution 4338814 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2 4343205 (IE Cumulative) Moderate Remote Code Execution 4339093 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2 4343205 (IE Cumulative) Moderate Remote Code Execution 4339093 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 for 32-bit Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 for x64-based Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows Server 2016 4343887 (Security Update) Moderate Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8385 Michael Holman, Microsoft Chakra Core Team


CVE-2018-8388 - Microsoft Edge Spoofing Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8388
MITRE
NVD
CVE Title: Microsoft Edge Spoofing Vulnerability
Description:

A spoofing vulnerability exists when Microsoft Edge improperly handles specific HTML content. An attacker who successfully exploited this vulnerability could trick a user into believing that the user was on a legitimate website. The specially crafted website could either spoof content or serve as a pivot to chain an attack with other vulnerabilities in web services.

To exploit the vulnerability, the user must either browse to a malicious website or be redirected to it. In an email attack scenario, an attacker could send an email message in an attempt to convince the user to click a link to a malicious site.

In a web-based attack scenario, an attacker could host a specially crafted website designed to appear as a legitimate website to the user. However, the attacker would have no way to force the user to visit the specially crafted website. The attacker would have to convince the user to visit the specially crafted website, typically by way of enticement in an email or instant message.

The security update addresses the vulnerability by correcting how Microsoft Edge handles specific HTML content.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Low Spoofing

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely N/A Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8388
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Microsoft Edge on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Low Spoofing 4338814 Base: 5.40
Temporal: 4.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Low Spoofing 4338814 Base: 5.40
Temporal: 4.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Low Spoofing 4338826 Base: 5.40
Temporal: 4.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Low Spoofing 4338826 Base: 5.40
Temporal: 4.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Low Spoofing 4338825 Base: 5.40
Temporal: 4.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Low Spoofing 4338825 Base: 5.40
Temporal: 4.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Low Spoofing 4338819 Base: 5.40
Temporal: 4.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Low Spoofing 4338819 Base: 5.40
Temporal: 4.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows Server 2016 4343887 (Security Update) Low Spoofing 4338814 Base: 5.40
Temporal: 4.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8388 Gareth Heyes of PortSwigger
https://twitter.com/garethheyes,https://portswigger.net


CVE-2018-8389 - Scripting Engine Memory Corruption Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8389
MITRE
NVD
CVE Title: Scripting Engine Memory Corruption Vulnerability
Description:

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Internet Explorer and then convince a user to view the website. An attacker could also embed an ActiveX control marked "safe for initialization" in an application or Microsoft Office document that hosts the IE rendering engine. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability.

The security update addresses the vulnerability by modifying how the scripting engine handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely Exploitation More Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8389
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Internet Explorer 10 on Windows Server 2012 4343901 (Monthly Rollup)
4343205 (IE Cumulative)
Important Remote Code Execution 4338830
4339093
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for 32-bit Systems 4343892 (Security Update) Important Remote Code Execution 4338829 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for x64-based Systems 4343892 (Security Update) Important Remote Code Execution 4338829 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Remote Code Execution 4338814 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Remote Code Execution 4338814 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Remote Code Execution 4338826 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Remote Code Execution 4338826 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Remote Code Execution 4338825 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Remote Code Execution 4338825 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Remote Code Execution 4338819 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Remote Code Execution 4338819 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Important Remote Code Execution 4338818
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Important Remote Code Execution 4338818
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for 32-bit systems 4343898 (Monthly Rollup)
4343205 (IE Cumulative)
Important Remote Code Execution 4338815
4339093
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for x64-based systems 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Important Remote Code Execution 4339093
4338815
Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows RT 8.1 4343898 (Monthly Rollup) Important Remote Code Execution 4338815 Base: 7.50
Temporal: 6.70
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Important Remote Code Execution 4338818
4339093
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2012 R2 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Important Remote Code Execution 4339093
4338815
Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2016 4343887 (Security Update) Important Remote Code Execution 4338814 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2 4343205 (IE Cumulative) Important Remote Code Execution 4339093 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2 4343205 (IE Cumulative) Important Remote Code Execution 4339093 Base: 6.40
Temporal: 5.80
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8389 Sudhakar Verma and Ashfaq Ansari - Project Srishti working with iDefense Labs


CVE-2018-8390 - Scripting Engine Memory Corruption Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8390
MITRE
NVD
CVE Title: Scripting Engine Memory Corruption Vulnerability
Description:

A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user.

If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

The security update addresses the vulnerability by modifying how the ChakraCore scripting engine handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely N/A Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8390
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
ChakraCore Commit (Security Update) Critical Remote Code Execution None Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Maybe
Microsoft Edge on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8390 None

CVE-2018-8394 - Windows GDI Information Disclosure Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8394
MITRE
NVD
CVE Title: Windows GDI Information Disclosure Vulnerability
Description:

An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system.

There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit an untrusted webpage.

The security update addresses the vulnerability by correcting how the Windows GDI component handles objects in memory.


FAQ:

What type of information could be disclosed by this vulnerability?

The type of information that could be disclosed if an attacker successfully exploited this vulnerability is memory layout - the vulnerability allows an attacker to collect information that facilitates predicting addressing of the memory.



Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Information Disclosure

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8394
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 10 for 32-bit Systems 4343892 (Security Update) Important Information Disclosure 4338829 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 for x64-based Systems 4343892 (Security Update) Important Information Disclosure 4338829 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Information Disclosure 4338814 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Information Disclosure 4338814 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Information Disclosure 4338826 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Information Disclosure 4338826 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Information Disclosure 4338825 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Information Disclosure 4338825 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Information Disclosure 4338819 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Information Disclosure 4338819 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 8.1 for 32-bit systems 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Information Disclosure
4338815
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 8.1 for x64-based systems 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Information Disclosure
4338815
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows RT 8.1 4343898 (Monthly Rollup) Important Information Disclosure 4338815 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for Itanium-Based Systems Service Pack 2 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for x64-based Systems Service Pack 2 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4343899 (Security Only)
4343900 (Monthly Rollup)
Important Information Disclosure
4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2012 4343896 (Security Only)
4343901 (Monthly Rollup)
Important Information Disclosure
4338830
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2012 (Server Core installation) 4343896 (Security Only)
4343901 (Monthly Rollup)
Important Information Disclosure
4338830
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2012 R2 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Information Disclosure
4338815
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2012 R2 (Server Core installation) 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Information Disclosure
4338815
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2016 4343887 (Security Update) Important Information Disclosure 4338814 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Information Disclosure 4338814 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Information Disclosure 4338825 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Information Disclosure 4338819 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8394 Anonymous working with Trend Micro's Zero Day Initiative
http://www.zerodayinitiative.com/


Lin Wang of Beihang University working with Trend Micro's Zero Day Initiative
http://www.zerodayinitiative.com/


CVE-2018-8396 - Windows GDI Information Disclosure Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8396
MITRE
NVD
CVE Title: Windows GDI Information Disclosure Vulnerability
Description:

An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system.

There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit an untrusted webpage.

The security update addresses the vulnerability by correcting how the Windows GDI component handles objects in memory.


FAQ:

What type of information could be disclosed by this vulnerability?

The type of information that could be disclosed if an attacker successfully exploited this vulnerability is memory layout - the vulnerability allows an attacker to collect information that facilitates predicting addressing of the memory.



Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Information Disclosure

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
N/A Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8396
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for Itanium-Based Systems Service Pack 2 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for x64-based Systems Service Pack 2 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4343899 (Security Only)
4343900 (Monthly Rollup)
Important Information Disclosure
4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8396 Behzad Najjarpour Jabbari, Secunia Research at Flexera


CVE-2018-8397 - GDI+ Remote Code Execution Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8397
MITRE
NVD
CVE Title: GDI+ Remote Code Execution Vulnerability
Description:

A remote code execution vulnerability exists in the way that the Windows Graphics Device Interface (GDI) handles objects in the memory. An attacker who successfully exploited this vulnerability could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

There are multiple ways an attacker could exploit the vulnerability:

  • In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability and then convince users to view the website. An attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by getting them to open an email attachment or click a link in an email or instant message.
  • In a file-sharing attack scenario, an attacker could provide a specially crafted document file that is designed to exploit the vulnerability, and then convince users to open the document file.

The security update addresses the vulnerability by correcting the way that the Windows GDI handles objects in the memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
N/A Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8397
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Critical Remote Code Execution 4338818
Base: 8.80
Temporal: 7.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Critical Remote Code Execution 4338818
Base: 8.80
Temporal: 7.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 4343674 (Security Update) Critical Remote Code Execution None Base: 8.80
Temporal: 7.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 4343674 (Security Update) Critical Remote Code Execution None Base: 8.80
Temporal: 7.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2008 for Itanium-Based Systems Service Pack 2 4343674 (Security Update) Critical Remote Code Execution None Base: 8.80
Temporal: 7.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2008 for x64-based Systems Service Pack 2 4343674 (Security Update) Critical Remote Code Execution None Base: 8.80
Temporal: 7.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 4343674 (Security Update) Critical Remote Code Execution None Base: 8.80
Temporal: 7.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4343899 (Security Only)
4343900 (Monthly Rollup)
Critical Remote Code Execution
4338818
Base: 8.80
Temporal: 7.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Critical Remote Code Execution 4338818
Base: 8.80
Temporal: 7.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4343900 (Monthly Rollup)
4343899 (Security Only)
Critical Remote Code Execution 4338818
Base: 8.80
Temporal: 7.90
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8397 Behzad Najjarpour Jabbari, Secunia Research at Flexera


CVE-2018-8398 - Windows GDI Information Disclosure Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8398
MITRE
NVD
CVE Title: Windows GDI Information Disclosure Vulnerability
Description:

An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system.

There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit an untrusted webpage.

The security update addresses the vulnerability by correcting how the Windows GDI component handles objects in memory.


FAQ:

What type of information could be disclosed by this vulnerability?

The type of information that could be disclosed if an attacker successfully exploited this vulnerability is memory layout - the vulnerability allows an attacker to collect information that facilitates predicting addressing of the memory.



Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Information Disclosure

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8398
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 10 for 32-bit Systems 4343892 (Security Update) Important Information Disclosure 4338829 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 for x64-based Systems 4343892 (Security Update) Important Information Disclosure 4338829 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Information Disclosure 4338814 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Information Disclosure 4338814 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Information Disclosure 4338826 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Information Disclosure 4338826 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Information Disclosure 4338825 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Information Disclosure 4338825 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Information Disclosure 4338819 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Information Disclosure 4338819 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 8.1 for 32-bit systems 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Information Disclosure
4338815
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows 8.1 for x64-based systems 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Information Disclosure
4338815
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows RT 8.1 4343898 (Monthly Rollup) Important Information Disclosure 4338815 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for Itanium-Based Systems Service Pack 2 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for x64-based Systems Service Pack 2 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 4343674 (Security Update) Important Information Disclosure None Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4343899 (Security Only)
4343900 (Monthly Rollup)
Important Information Disclosure
4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Information Disclosure 4338818
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2012 4343896 (Security Only)
4343901 (Monthly Rollup)
Important Information Disclosure
4338830
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2012 (Server Core installation) 4343896 (Security Only)
4343901 (Monthly Rollup)
Important Information Disclosure
4338830
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2012 R2 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Information Disclosure
4338815
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2012 R2 (Server Core installation) 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Information Disclosure
4338815
Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2016 4343887 (Security Update) Important Information Disclosure 4338814 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Information Disclosure 4338814 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Information Disclosure 4338825 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Information Disclosure 4338819 Base: 4.70
Temporal: 4.20
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8398 Lin Wang of Beihang University


CVE-2018-8399 - Win32k Elevation of Privilege Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8399
MITRE
NVD
CVE Title: Win32k Elevation of Privilege Vulnerability
Description:

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system.

The update addresses this vulnerability by correcting how Win32k handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Elevation of Privilege

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8399
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Elevation of Privilege 4338826 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Elevation of Privilege 4338826 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8399 bee13oy of Qihoo 360 Vulcan Team​
http://www.360.com/


CVE-2018-8400 - DirectX Graphics Kernel Elevation of Privilege Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8400
MITRE
NVD
CVE Title: DirectX Graphics Kernel Elevation of Privilege Vulnerability
Description:

An elevation of privilege vulnerability exists when the DirectX Graphics Kernel (DXGKRNL) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context.

To exploit the vulnerability, an attacker would first have to log on to the system, and then run a specially crafted application to take control over the affected system.

The security update addresses the vulnerability by correcting how DXGKRNL handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Elevation of Privilege

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8400
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8400 RanchoIce and ChenNan of Tencent ZhanluLab working with Trend Micro's Zero Day Initiative
http://www.zerodayinitiative.com/


CVE-2018-8401 - DirectX Graphics Kernel Elevation of Privilege Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8401
MITRE
NVD
CVE Title: DirectX Graphics Kernel Elevation of Privilege Vulnerability
Description:

An elevation of privilege vulnerability exists when the DirectX Graphics Kernel (DXGKRNL) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context.

To exploit the vulnerability, an attacker would first have to log on to the system, and then run a specially crafted application to take control over the affected system.

The security update addresses the vulnerability by correcting how DXGKRNL handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Elevation of Privilege

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely Exploitation More Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8401
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 10 for 32-bit Systems 4343892 (Security Update) Important Elevation of Privilege 4338829 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 for x64-based Systems 4343892 (Security Update) Important Elevation of Privilege 4338829 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Elevation of Privilege 4338826 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Elevation of Privilege 4338826 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2016 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8401 RanchoIce and ChenNan of Tencent ZhanluLab working with Trend Micro's Zero Day Initiative
http://www.zerodayinitiative.com/


CVE-2018-8403 - Microsoft Browser Memory Corruption Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8403
MITRE
NVD
CVE Title: Microsoft Browser Memory Corruption Vulnerability
Description:

A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory. The vulnerability could corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, the attacker could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

An attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft browsers, and then convince a user to view the website. The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted content that could exploit the vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically via an enticement in email or instant message, or by getting them to open an email attachment.

The security update addresses the vulnerability by modifying how Microsoft browsers handle objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely Exploitation More Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8403
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Internet Explorer 10 on Windows Server 2012 4343901 (Monthly Rollup)
4343205 (IE Cumulative)
Moderate Remote Code Execution 4338830
4339093
Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for 32-bit Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 for x64-based Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Critical Remote Code Execution 4338825 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Critical Remote Code Execution 4338819 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338818
4339093
Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338818
4339093
Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for 32-bit systems 4343898 (Monthly Rollup)
4343205 (IE Cumulative)
Critical Remote Code Execution 4338815
4339093
Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows 8.1 for x64-based systems 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Critical Remote Code Execution 4339093
4338815
Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows RT 8.1 4343898 (Monthly Rollup) Critical Remote Code Execution 4338815 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343205 (IE Cumulative)
Moderate Remote Code Execution 4338818
4339093
Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2012 R2 4343205 (IE Cumulative)
4343898 (Monthly Rollup)
Moderate Remote Code Execution 4339093
4338815
Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Internet Explorer 11 on Windows Server 2016 4343887 (Security Update) Moderate Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 for 32-bit Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 for x64-based Systems 4343892 (Security Update) Critical Remote Code Execution 4338829 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Critical Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Critical Remote Code Execution 4338826 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes
Microsoft Edge on Windows Server 2016 4343887 (Security Update) Moderate Remote Code Execution 4338814 Base: 4.20
Temporal: 3.80
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8403 Jihui Lu of Tencent KeenLab


CVE-2018-8404 - Win32k Elevation of Privilege Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8404
MITRE
NVD
CVE Title: Win32k Elevation of Privilege Vulnerability
Description:

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system.

The update addresses this vulnerability by correcting how Win32k handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Elevation of Privilege

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely Exploitation More Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8404
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 10 for 32-bit Systems 4343892 (Security Update) Important Elevation of Privilege 4338829 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 for x64-based Systems 4343892 (Security Update) Important Elevation of Privilege 4338829 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Elevation of Privilege 4338826 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Elevation of Privilege 4338826 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Elevation of Privilege 4338818
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Elevation of Privilege 4338818
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 8.1 for 32-bit systems 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Elevation of Privilege
4338815
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 8.1 for x64-based systems 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Elevation of Privilege
4338815
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4343899 (Security Only)
4343900 (Monthly Rollup)
Important Elevation of Privilege
4338818
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Elevation of Privilege 4338818
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4343900 (Monthly Rollup)
4343899 (Security Only)
Important Elevation of Privilege 4338818
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2012 4343896 (Security Only)
4343901 (Monthly Rollup)
Important Elevation of Privilege
4338830
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2012 (Server Core installation) 4343896 (Security Only)
4343901 (Monthly Rollup)
Important Elevation of Privilege
4338830
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2012 R2 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Elevation of Privilege
4338815
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2012 R2 (Server Core installation) 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Elevation of Privilege
4338815
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2016 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8404 RanchoIce of Tencent ZhanluLab working with Trend Micro's Zero Day Initiative
http://www.zerodayinitiative.com/


CVE-2018-8405 - DirectX Graphics Kernel Elevation of Privilege Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8405
MITRE
NVD
CVE Title: DirectX Graphics Kernel Elevation of Privilege Vulnerability
Description:

An elevation of privilege vulnerability exists when the DirectX Graphics Kernel (DXGKRNL) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context.

To exploit the vulnerability, an attacker would first have to log on to the system, and then run a specially crafted application to take control over the affected system.

The security update addresses the vulnerability by correcting how DXGKRNL handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Elevation of Privilege

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely Exploitation More Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8405
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 10 for 32-bit Systems 4343892 (Security Update) Important Elevation of Privilege 4338829 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 for x64-based Systems 4343892 (Security Update) Important Elevation of Privilege 4338829 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Elevation of Privilege 4338826 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Elevation of Privilege 4338826 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 8.1 for 32-bit systems 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Elevation of Privilege
4338815
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 8.1 for x64-based systems 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Elevation of Privilege
4338815
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows RT 8.1 4343898 (Monthly Rollup) Important Elevation of Privilege 4338815 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2012 R2 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Elevation of Privilege
4338815
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2012 R2 (Server Core installation) 4343888 (Security Only)
4343898 (Monthly Rollup)
Important Elevation of Privilege
4338815
Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2016 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8405 ChenNan and RanchoIce of Tencent ZhanluLab working with Trend Micro's Zero Day Initiative
http://www.zerodayinitiative.com/


CVE-2018-8406 - DirectX Graphics Kernel Elevation of Privilege Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8406
MITRE
NVD
CVE Title: DirectX Graphics Kernel Elevation of Privilege Vulnerability
Description:

An elevation of privilege vulnerability exists when the DirectX Graphics Kernel (DXGKRNL) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context.

To exploit the vulnerability, an attacker would first have to log on to the system, and then run a specially crafted application to take control over the affected system.

The security update addresses the vulnerability by correcting how DXGKRNL handles objects in memory.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Elevation of Privilege

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation More Likely Exploitation More Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8406
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 10 for 32-bit Systems 4343892 (Security Update) Important Elevation of Privilege 4338829 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 for x64-based Systems 4343892 (Security Update) Important Elevation of Privilege 4338829 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Elevation of Privilege 4338826 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Elevation of Privilege 4338826 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2016 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 7.00
Temporal: 6.30
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8406 ChenNan and RanchoIce of Tencent ZhanluLab working with Trend Micro's Zero Day Initiative
http://www.zerodayinitiative.com/


Communications Security Establishment
https://www.cse-cst.gc.ca/


ADV180020 - August 2018 Adobe Flash Security Update

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
ADV180020
MITRE
NVD
CVE Title: August 2018 Adobe Flash Security Update
Description:

This security update addresses the following vulnerabilities, which are described in Adobe Security Bulletin APSB18-25: CVE-2018-12824, CVE-2018-12825, CVE-2018-12826, CVE-2018-12827, CVE-2018-12828.


FAQ:

How could an attacker exploit these vulnerabilities? In a web-based attack scenario where the user is using Internet Explorer for the desktop, an attacker could host a specially crafted website that is designed to exploit any of these vulnerabilities through Internet Explorer and then convince a user to view the website. An attacker could also embed an ActiveX control marked "safe for initialization" in an application or Microsoft Office document that hosts the IE rendering engine. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit any of these vulnerabilities. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by clicking a link in an email message or in an Instant Messenger message that takes users to the attacker's website, or by opening an attachment sent through email.

In a web-based attack scenario where the user is using Internet Explorer in the Windows 8-style UI, an attacker would first need to compromise a website already listed in the Compatibility View (CV) list. An attacker could then host a website that contains specially crafted Flash content designed to exploit any of these vulnerabilities through Internet Explorer and then convince a user to view the website. An attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by clicking a link in an email message or in an Instant Messenger message that takes users to the attacker's website, or by opening an attachment sent through email. For more information about Internet Explorer and the CV List, please see the MSDN Article, Developer Guidance for websites with content for Adobe Flash Player in Windows 8.



Mitigations:

Workarounds:

Workaround refers to a setting or configuration change that would help block known attack vectors before you apply the update.

Prevent Adobe Flash Player from running You can disable attempts to instantiate Adobe Flash Player in Internet Explorer and other applications that honor the kill bit feature, such as Office 2007 and Office 2010, by setting the kill bit for the control in the registry.

Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk. To set the kill bit for the control in the registry, perform the following steps:

  1. Paste the following into a text file and save it with the .reg file extension.

     Windows Registry Editor Version 5.00
     [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{D27CDB6E-AE6D-11CF-96B8-444553540000}]
     "Compatibility Flags"=dword:00000400
    
     [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{D27CDB6E-AE6D-11CF-96B8-444553540000}]
     "Compatibility Flags"=dword:00000400
    
  2. Double-click the .reg file to apply it to an individual system.

    You can also apply this workaround across domains by using Group Policy. For more information about Group Policy, see the TechNet article, Group Policy collection.

Note You must restart Internet Explorer for your changes to take effect. Impact of workaround. There is no impact as long as the object is not intended to be used in Internet Explorer. How to undo the workaround. Delete the registry keys that were added in implementing this workaround. Prevent Adobe Flash Player from running in Internet Explorer through Group Policy Note The Group Policy MMC snap-in can be used to set policy for a machine, for an organizational unit, or for an entire domain. For more information about Group Policy, visit the following Microsoft Web sites:

Group Policy Overview What is Group Policy Object Editor? Core Group Policy tools and settings

To disable Adobe Flash Player in Internet Explorer through Group Policy, perform the following steps: Note This workaround does not prevent Flash from being invoked from other applications, such as Microsoft Office 2007 or Microsoft Office 2010.

  1. Open the Group Policy Management Console and configure the console to work with the appropriate Group Policy object, such as local machine, OU, or domain GPO.
  2. Navigate to the following node: Administrative Templates -> Windows Components -> Internet Explorer -> Security Features -> Add-on Management
  3. Double-click Turn off Adobe Flash in Internet Explorer and prevent applications from using Internet Explorer technology to instantiate Flash objects.
  4. Change the setting to Enabled.
  5. Click Apply and then click OK to return to the Group Policy Management Console.
  6. Refresh Group Policy on all systems or wait for the next scheduled Group Policy refresh interval for the settings to take effect. Prevent Adobe Flash Player from running in Office 2010 on affected systems Note This workaround does not prevent Adobe Flash Player from running in Internet Explorer. Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk. For detailed steps that you can use to prevent a control from running in Internet Explorer, see Microsoft Knowledge Base Article 240797. Follow the steps in the article to create a Compatibility Flags value in the registry to prevent a COM object from being instantiated in Internet Explorer.

To disable Adobe Flash Player in Office 2010 only, set the kill bit for the ActiveX control for Adobe Flash Player in the registry using the following steps:

  1. Create a text file named Disable_Flash.reg with the following contents:
		[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Common\COM\Compatibility\{D27CDB6E-AE6D-11CF-96B8-444553540000}]
	"Compatibility Flags"=dword:00000400
  1. Double-click the .reg file to apply it to an individual system.
  2. Note You must restart Internet Explorer for your changes to take effect. You can also apply this workaround across domains by using Group Policy. For more information about Group Policy, see the TechNet article, Group Policy collection. Prevent ActiveX controls from running in Office 2007 and Office 2010

To disable all ActiveX controls in Microsoft Office 2007 and Microsoft Office 2010, including Adobe Flash Player in Internet Explorer, perform the following steps:

  1. Click File, click Options, click Trust Center, and then click Trust Center Settings.
  2. Click ActiveX Settings in the left-hand pane, and then select Disable all controls without notifications.
  3. Click OK to save your settings. Impact of workaround. Office documents that use embedded ActiveX controls may not display as intended. How to undo the workaround.

To re-enable ActiveX controls in Microsoft Office 2007 and Microsoft Office 2010, perform the following steps:

  1. Click File, click Options, click Trust Center, and then click Trust Center Settings.
  2. Click ActiveX Settings in the left-hand pane, and then deselect Disable all controls without notifications.
  3. Click OK to save your settings. Set Internet and Local intranet security zone settings to "High" to block ActiveX Controls and Active Scripting in these zones You can help protect against exploitation of these vulnerabilities by changing your settings for the Internet security zone to block ActiveX controls and Active Scripting. You can do this by setting your browser security to High.

To raise the browsing security level in Internet Explorer, perform the following steps:

  1. On the Internet Explorer Tools menu, click** Internet Option**s.
  2. In the Internet Options dialog box, click the Security tab, and then click Internet.
  3. Under Security level for this zone, move the slider to High. This sets the security level for all websites you visit to High.
  4. Click Local intranet.
  5. Under Security level for this zone, move the slider to High. This sets the security level for all websites you visit to High.
  6. Click OK to accept the changes and return to Internet Explorer. Note If no slider is visible, click Default Level, and then move the slider to High. Note Setting the level to High may cause some websites to work incorrectly. If you have difficulty using a website after you change this setting, and you are sure the site is safe to use, you can add that site to your list of trusted sites. This will allow the site to work correctly even with the security setting set to High. Impact of workaround. There are side effects to blocking ActiveX Controls and Active Scripting. Many websites on the Internet or an intranet use ActiveX or Active Scripting to provide additional functionality. For example, an online e-commerce site or banking site may use ActiveX Controls to provide menus, ordering forms, or even account statements. Blocking ActiveX Controls or Active Scripting is a global setting that affects all Internet and intranet sites. If you do not want to block ActiveX Controls or Active Scripting for such sites, use the steps outlined in "Add sites that you trust to the Internet Explorer Trusted sites zone". Configure Internet Explorer to prompt before running Active Scripting or to disable Active Scripting in the Internet and Local intranet security zone

You can help protect against exploitation of these vulnerabilities by changing your settings to prompt before running Active Scripting or to disable Active Scripting in the Internet and Local intranet security zone. To do this, perform the following steps:

  1. In Internet Explorer, click Internet Options on the Tools menu.
  2. Click the Security tab.
  3. Click Internet, and then click Custom Level.
  4. Under Settings, in the Scripting section, under Active Scripting, click Prompt or Disable, and then click OK.
  5. Click Local intranet, and then click Custom Level.
  6. Under Settings, in the Scripting section, under Active Scripting, click Prompt or Disable, and then click OK.
  7. Click OK to return to Internet Explorer, and then click OK again. Note Disabling Active Scripting in the Internet and Local intranet security zones may cause some websites to work incorrectly. If you have difficulty using a website after you change this setting, and you are sure the site is safe to use, you can add that site to your list of trusted sites. This will allow the site to work correctly. Impact of workaround. There are side effects to prompting before running Active Scripting. Many websites that are on the Internet or on an intranet use Active Scripting to provide additional functionality. For example, an online e-commerce site or banking site may use Active Scripting to provide menus, ordering forms, or even account statements. Prompting before running Active Scripting is a global setting that affects all Internet and intranet sites. You will be prompted frequently when you enable this workaround. For each prompt, if you feel you trust the site that you are visiting, click Yes to run Active Scripting. If you do not want to be prompted for all these sites, use the steps outlined in "Add sites that you trust to the Internet Explorer Trusted sites zone". Add sites that you trust to the Internet Explorer Trusted sites zone After you set Internet Explorer to require a prompt before it runs ActiveX controls and Active Scripting in the Internet zone and in the Local intranet zone, you can add sites that you trust to the Internet Explorer Trusted sites zone. This will allow you to continue to use trusted websites exactly as you do today, while helping to protect you from this attack on untrusted sites. We recommend that you add only sites that you trust to the Trusted sites zone.

To do this, perform the following steps:

  1. In Internet Explorer, click Tools, click Internet Options, and then click the Security tab.
  2. In the Select a web content zone to specify its current security settings box, click Trusted Sites, and then click Sites.
  3. If you want to add sites that do not require an encrypted channel, click to clear the Require server verification (https:) for all sites in this zone check box.
  4. In the Add this website to the zone box, type the URL of a site that you trust, and then click Add.
  5. Repeat these steps for each site that you want to add to the zone.
  6. Click OK two times to accept the changes and return to Internet Explorer. Note Add any sites that you trust not to take malicious action on your system. Two sites in particular that you may want to add are *.windowsupdate.microsoft.com and *.update.microsoft.com. These are the sites that will host the update, and they require an ActiveX control to install the update.

Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Not Found Not Found Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

ADV180020
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Adobe Flash Player on Windows 10 for 32-bit Systems 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows 10 for x64-based Systems 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows 10 Version 1607 for 32-bit Systems 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows 10 Version 1607 for x64-based Systems 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows 10 Version 1703 for 32-bit Systems 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows 10 Version 1703 for x64-based Systems 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows 10 Version 1709 for 32-bit Systems 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows 10 Version 1709 for x64-based Systems 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows 10 Version 1803 for 32-bit Systems 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows 10 Version 1803 for x64-based Systems 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows 8.1 for 32-bit systems 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows 8.1 for x64-based systems 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows RT 8.1 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows Server 2012 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows Server 2012 R2 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes
Adobe Flash Player on Windows Server 2016 4343902 (Security Update) Critical Remote Code Execution 4338832 Base: N/A
Temporal: N/A
Vector: N/A
Yes

Acknowledgements

CVE ID Acknowledgements
ADV180020 None

ADV180021 - Microsoft Office Defense in Depth Update

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
ADV180021
MITRE
NVD
CVE Title: Microsoft Office Defense in Depth Update
Description:

Microsoft has released an update for Microsoft Office that provides enhanced security as a defense in depth measure.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Unknown Defense in Depth

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

ADV180021
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Microsoft Outlook 2010 Service Pack 2 (32-bit editions) 4032222 (Security Update) Unknown Defense in Depth 4022205 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Outlook 2010 Service Pack 2 (64-bit editions) 4032222 (Security Update) Unknown Defense in Depth 4022205 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Outlook 2013 RT Service Pack 1 4032240 (Security Update) Unknown Defense in Depth 4022169 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Outlook 2013 Service Pack 1 (32-bit editions) 4032240 (Security Update) Unknown Defense in Depth 4022169 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Outlook 2013 Service Pack 1 (64-bit editions) 4032240 (Security Update) Unknown Defense in Depth 4022169 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Outlook 2016 (32-bit edition) 4032235 (Security Update) Unknown Defense in Depth 4022160 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Outlook 2016 (64-bit edition) 4032235 (Security Update) Unknown Defense in Depth 4022160 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Outlook 2016 Click-to-Run (C2R) for 32-bit editions Click to Run (Security Update) Unknown Defense in Depth None Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Outlook 2016 Click-to-Run (C2R) for 64-bit editions Click to Run (Security Update) Unknown Defense in Depth None Base: N/A
Temporal: N/A
Vector: N/A
Maybe

Acknowledgements

CVE ID Acknowledgements
ADV180021 Rick Roane


CVE-2018-0952 - Diagnostic Hub Standard Collector Elevation Of Privilege Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-0952
MITRE
NVD
CVE Title: Diagnostic Hub Standard Collector Elevation Of Privilege Vulnerability
Description:

An Elevation of Privilege vulnerability exists when Diagnostics Hub Standard Collector allows file creation in arbitrary locations.

To exploit the vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system.

The update addresses the vulnerability by not permitting Diagnostics Hub Standard Collector to create files in arbitrary locations.


FAQ:
None
Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Elevation of Privilege

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-0952
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Microsoft Visual Studio 2015 Update 3 Important Elevation of Privilege None Base: N/A
Temporal: N/A
Vector: N/A
Unknown
Microsoft Visual Studio 2017 Release Notes (Security Update) Important Elevation of Privilege None Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft Visual Studio 2017 Version 15.8 Release Notes (Security Update) Important Elevation of Privilege None Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Windows 10 for 32-bit Systems 4343892 (Security Update) Important Elevation of Privilege 4338829 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 for x64-based Systems 4343892 (Security Update) Important Elevation of Privilege 4338829 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Elevation of Privilege 4338826 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Elevation of Privilege 4338826 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2016 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Elevation of Privilege 4338814 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Elevation of Privilege 4338825 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Elevation of Privilege 4338819 Base: 6.70
Temporal: 6.00
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-0952 Ryan Hanson of Atredis Partners
https://twitter.com/ryhanson,https://www.atredis.com


CVE-2018-8200 - Device Guard Code Integrity Policy Security Feature Bypass Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8200
MITRE
NVD
CVE Title: Device Guard Code Integrity Policy Security Feature Bypass Vulnerability
Description:

A security feature bypass vulnerability exists in Device Guard that could allow an attacker to inject malicious code into a Windows PowerShell session. An attacker who successfully exploited this vulnerability could inject code into a trusted PowerShell process to bypass the Device Guard Code Integrity policy on the local machine.

To exploit the vulnerability, an attacker would first have to access the local machine, and then inject malicious code into a script that is trusted by the Code Integrity policy. The injected code would then run with the same trust level as the script and bypass the Code Integrity policy.

The update addresses the vulnerability by correcting how PowerShell exposes functions and processes user supplied code.


FAQ:

How can I protect myself when running existing PowerShell Scripts?

For more information about PowerShell Module Exporting Functions in Constrained Language, please see the blog article here.



Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Important Security Feature Bypass

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8200
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Windows 10 for 32-bit Systems 4343892 (Security Update) Important Security Feature Bypass 4338829 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 for x64-based Systems 4343892 (Security Update) Important Security Feature Bypass 4338829 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Security Feature Bypass 4338814 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Security Feature Bypass 4338814 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Security Feature Bypass 4338826 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Security Feature Bypass 4338826 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Security Feature Bypass 4338825 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Security Feature Bypass 4338825 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Security Feature Bypass 4338819 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Security Feature Bypass 4338819 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows Server 2016 4343887 (Security Update) Important Security Feature Bypass 4338814 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows Server 2016 (Server Core installation) 4343887 (Security Update) Important Security Feature Bypass 4338814 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Security Feature Bypass 4338825 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Security Feature Bypass 4338819 Base: 5.30
Temporal: 4.80
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Yes

Acknowledgements

CVE ID Acknowledgements
CVE-2018-8200 Matt Graeber of SpecterOps
https://specterops.io/


CVE-2018-8273 - Microsoft SQL Server Remote Code Execution Vulnerability

(top)
CVE ID Vulnerability Description Maximum Severity Rating Vulnerability Impact
CVE-2018-8273
MITRE
NVD
CVE Title: Microsoft SQL Server Remote Code Execution Vulnerability
Description:

A buffer overflow vulnerability exists in the Microsoft SQL Server that could allow remote code execution on an affected system. An attacker who successfully exploited this vulnerability could execute code in the context of the SQL Server Database Engine service account.

To exploit the vulnerability, an attacker would need to submit a specially crafted query to an affected SQL server.

The security update addresses the vulnerability by modifying how the Microsoft SQL Server Database Engine handles objects in memory.


FAQ:

There are GDR and/or CU (Cumulative Update) updates offered for my version of SQL Server. How do I know which update to use?

Note If your SQL Server version number is not represented in the table below, your SQL Server version is no longer supported. Please upgrade to the latest Service Pack or SQL Server product in order to apply this and future security updates.

Update number Title Apply if current product version is… This security update also includes servicing releases up through…
4293803 Description of the security update for the Remote Code Execution vulnerability in SQL Server 2017 (GDR): August 14, 2018 14.0.1000.169 - 14.0.2000.63 4057122
4293805 Description of the security update for the Remote Code Execution vulnerability in SQL Server 2017 (CU): August 14, 2018 14.0.3006.16 - 14.0.3030.27 KB4341265 – RTM CU9
4293801 Description of the security update for the Remote Code Execution vulnerability in SQL Server 2016 SP1(GDR): August 14, 2018 13.0.4001.0 - 13.0.4210.6 4057118
4293808 Description of the security update for the Remote Code Execution vulnerability in SQL Server 2016 SP1 (CU): August 14, 2018 13.0.4411.0 - 13.0.4514.0 KB4341569 – SP1 CU10
4293802 Description of the security update for the Remote Code Execution vulnerability in SQL Server 2016 SP2 (GDR): August 14, 2018 13.0.5026.0 - 13.0.5099.0 SP2
4293807 Description of the security update for the Remote Code Execution vulnerability in SQL Server 2016 SP2 (CU): August 14, 2018 13.0.5149.0 - 13.0.5153.0 KB4340355 – SP2 CU2

What are the GDR and CU update designations and how do they differ?

The General Distribution Release (GDR) and Cumulative Update (CU) designations correspond to the two different update servicing branches in place for SQL Server. The primary difference between the two is that CU branches cumulatively include all updates for a given baseline, while GDR branches include only cumulative critical updates for a given baseline. A baseline can be the initial RTM release or a Service Pack.

For any given baseline, either the GDR or CU updates are options if you are a) at the baseline version (never installed any servicing updates, CU or GDR), or b) have only installed GDR updates. The CU update is the only option if you have installed a previous SQL Server CU for the baseline you are on.

Does this security update apply to SQL Server 2017 on Linux or on Linux Docker Containers?

Yes. For information on obtaining and installing the CU or GDR updates on Linux Operating Systems or Docker Containers, please see:

  1. Configure repositories for installing and upgrading SQL Server on Linux
  2. Release notes for SQL Server 2017 on Linux
  3. Official images for Microsoft SQL Server on Linux for Docker Engine

Will these security updates be offered to SQL Server clusters?

Yes. The updates will also be offered to SQL Server 2016 SP1/SP2 and SQL Server 2017 RTM instances that are clustered. Updates for SQL Server clusters will require user interaction. If the SQL Server 2016 SP1/SP2 or SQL Server 2017 RTM cluster has a passive node, to reduce downtime, Microsoft recommends that you scan and apply the update to the inactive node first, then scan and apply it to the active node. When all components have been updated on all nodes, the update will no longer be offered.

Can the security updates be applied to SQL Server instances on Windows Azure (IaaS)?

Yes. SQL Server instances on Windows Azure (IaaS) can be offered the security updates through Microsoft Update, or customers can download the security updates from Microsoft Download Center and apply them manually.



Mitigations:
None
Workarounds:
None
Revision:
1.0    2018-08-14T07:00:00    

Information published.


Critical Remote Code Execution

Exploitability Index

The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.

Exploitability Assessment for Latest Software Release Exploitability Assessment for Older Software Release Denial of Service Exploitability Assessment Publicly Disclosed Exploited
Exploitation Less Likely Exploitation Less Likely Not Applicable No No

Affected Software

The following tables list the affected software details for the vulnerability.

CVE-2018-8273
Product KB Article Severity Impact Supersedence CVSS Score Set Restart Required
Microsoft SQL Server 2016 for x64-based Systems Service Pack 1 4293801 (Security Update) Critical Remote Code Execution 4057118 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft SQL Server 2016 for x64-based Systems Service Pack 1 (CU) 4293808 (Security Update) Critical Remote Code Execution 4058561 Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft SQL Server 2016 for x64-based Systems Service Pack 2 4293802 (Security Update) Critical Remote Code Execution None Base: N/A
Temporal: N/A
Vector: N/A
Maybe
Microsoft SQL Server 2016 for x64-based Systems Service Pack 2 (CU)