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AUSCERT External Security Bulletin Redistribution
ESB-2015.3070
Microsoft Security Bulletin MS15-135 – Important: Security Update for
Windows Kernel-Mode Drivers to Address Elevation of Privilege (3119075)
9 December 2015
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AusCERT Security Bulletin Summary
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Product: Microsoft Windows
Publisher: Microsoft
Operating System: Windows
Impact/Access: Administrator Compromise -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2015-6175 CVE-2015-6174 CVE-2015-6173
CVE-2015-6171
Original Bulletin:
https://technet.microsoft.com/en-us/library/security/MS15-135
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Important: Security Update for Windows Kernel-Mode Drivers to Address
Elevation of Privilege (3119075)
Document Metadata
Bulletin Number: MS15-135
Bulletin Title: Security Update for Windows Kernel-Mode Drivers to Address
Elevation of Privilege
Severity: Important
KB Article: 3119075
Version: 1.0
Published Date: December 8, 2015
Executive Summary
This security update resolves vulnerabilities in Microsoft Windows. The
vulnerabilities could allow elevation of privilege if an attacker logs on to a
target system and runs a specially crafted application.
This security update is rated Important for supported releases of Microsoft
Windows. For more information, see the Affected Software section.
Affected Software
Windows Vista Service Pack 2
Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems Service Pack 2
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Windows 8 for 32-bit Systems
Windows 8 for x64-based Systems
Windows 8.1 for 32-bit Systems
Windows 8.1 for x64-based Systems
Windows Server 2012
Windows Server 2012 R2
Windows RT [1]
Windows RT 8.1 [1]
Windows 10 for 32-bit Systems [2]
Windows 10 for x64-based Systems [2]
Windows 10 Version 1511 for 32-bit Systems [2]
Windows 10 Version 1511 for x64-based Systems [2]
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core
installation)
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core
installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core
installation)
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2 (Server Core installation)
[1] This update is only available via Windows Update.
[2] Windows 10 updates are cumulative. In addition to containing non-security
updates, they also contain all of the security fixes for all of the Windows
10-affected vulnerabilities shipping with the monthly security release. The
update is available via the Windows Update Catalog.
Vulnerability Information
Multiple Windows Kernel Memory Elevation of Privilege Vulnerabilities
Multiple elevation of privilege vulnerabilities exist due to the way the
Windows kernel handles objects in memory. An attacker who successfully
exploited the vulnerabilities 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 vulnerabilities, an attacker would first have to log on to the
system. An attacker could then run a specially crafted application that could
exploit the vulnerabilities and take control over an affected system. The
security update addresses the vulnerabilities by correcting how the Windows
kernel handles objects in memory.
The following tables contain links to the standard entry for each
vulnerability in the Common Vulnerabilities and Exposures list:
Vulnerability title CVE number Publicly disclosed Exploited
Windows Kernel Memory Elevation of Privilege Vulnerability CVE-2015-6171 No No
Windows Kernel Memory Elevation of Privilege Vulnerability CVE-2015-6173 No No
Windows Kernel Memory Elevation of Privilege Vulnerability CVE-2015-6174 No No
Windows Kernel Memory Elevation of Privilege Vulnerability CVE-2015-6175 Yes Yes
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