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AUSCERT External Security Bulletin Redistribution
ESB-2012.0763
Vulnerability in Windows Kernel-Mode Drivers Could Allow
Elevation of Privilege (2731847)
15 August 2012
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AusCERT Security Bulletin Summary
---------------------------------
Product: Microsoft Windows
Publisher: Microsoft
Operating System: Windows XP
Windows Server 2003
Windows Vista
Windows Server 2008
Windows 7
Windows Server 2008 R2
Impact/Access: Administrator Compromise -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2012-2527
Original Bulletin:
http://technet.microsoft.com/en-us/security/bulletin/MS12-055
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Microsoft Security Bulletin MS12-055 - Important
Vulnerability in Windows Kernel-Mode Drivers Could Allow Elevation of
Privilege (2731847)
Published Date: August 14, 2012
Version: 1.0
General Information
Executive Summary
This security update resolves one privately reported vulnerability in
Microsoft Windows. The vulnerability could allow elevation of privilege if an
attacker logs on to the system and runs a specially crafted application. An
attacker must have valid logon credentials and be able to log on locally to
exploit this vulnerability.
This security update is rated Important for all supported releases of Microsoft
Windows. For more information, see the subsection, Affected and Non-Affected
Software, in this section.
Affected Software
Windows XP Service Pack 3
Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP2 for Itanium-based Systems
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
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
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 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core
installation)
Vulnerability Information
Win32k Use After Free Vulnerability - CVE-2012-2527
An elevation of privilege vulnerability exists when the Windows kernel-mode
driver improperly handles 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 administrative rights.
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===========================================================================
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The University of Queensland
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