Microsoft Windows Kernel 'Win32k.sys' (CVE-2012-0157) Local Privilege Escalation Vulnerability

Description

Microsoft Windows is prone to a local privilege-escalation vulnerability that occurs in the Windows kernel. A local attacker can exploit this issue to execute arbitrary code with kernel-level privileges. Successful exploits will result in the complete compromise of affected computers. Failed exploit attempts may cause a denial-of-service condition.

Technologies Affected

• Avaya Aura Conferencing 6.0 SP1 Standard
• Avaya Aura Conferencing 6.0 Standard
• Avaya CallPilot 4.0
• Avaya CallPilot 5.0
• Avaya Communication Server 1000 Telephony Manager 3.0
• Avaya Communication Server 1000 Telephony Manager 4.0
• Avaya Meeting Exchange - Client Registration Server
• Avaya Meeting Exchange - Recording Server
• Avaya Meeting Exchange - Streaming Server
• Avaya Meeting Exchange - Web Conferencing Server
• Avaya Meeting Exchange - Webportal
• Avaya Meeting Exchange 5.0
• Avaya Meeting Exchange 5.0 SP1
• Avaya Meeting Exchange 5.0 SP2
• Avaya Meeting Exchange 5.0.0.0.52
• Avaya Meeting Exchange 5.1
• Avaya Meeting Exchange 5.1 SP1
• Avaya Meeting Exchange 5.2
• Avaya Meeting Exchange 5.2 SP1
• Avaya Meeting Exchange 5.2 SP2
• Avaya Messaging Application Server 4
• Avaya Messaging Application Server 5
• Avaya Messaging Application Server 5.2
• Microsoft Windows 7 Home Premium
• Microsoft Windows 7 Home Premium Sp1 X32
• Microsoft Windows 7 Home Premium Sp1 X64
• Microsoft Windows 7 for 32-bit Systems
• Microsoft Windows 7 for 32-bit Systems SP1
• Microsoft Windows 7 for x64-based Systems
• Microsoft Windows 7 for x64-based Systems SP1
• Microsoft Windows Server 2003 Itanium
• Microsoft Windows Server 2003 Itanium SP1
• Microsoft Windows Server 2003 Itanium SP2
• Microsoft Windows Server 2003 SP1
• Microsoft Windows Server 2003 SP2
• Microsoft Windows Server 2003 Sp1 X64
• Microsoft Windows Server 2003 Sp2 X64
• Microsoft Windows Server 2008 for 32-bit Systems
• Microsoft Windows Server 2008 for 32-bit Systems SP2
• Microsoft Windows Server 2008 for Itanium-based Systems
• Microsoft Windows Server 2008 for Itanium-based Systems R2
• Microsoft Windows Server 2008 for Itanium-based Systems SP2
• Microsoft Windows Server 2008 for x64-based Systems
• Microsoft Windows Server 2008 for x64-based Systems R2
• Microsoft Windows Server 2008 for x64-based Systems SP2
• Microsoft Windows Vista Enterprise 64-bit edition
• Microsoft Windows Vista Enterprise 64-bit edition SP1
• Microsoft Windows Vista Enterprise 64-bit edition SP2
• Microsoft Windows Vista Enterprise SP1
• Microsoft Windows Vista Enterprise SP2
• Microsoft Windows Vista Home Basic 64-bit edition
• Microsoft Windows Vista Home Basic 64-bit edition SP1
• Microsoft Windows Vista Home Basic 64-bit edition SP2
• Microsoft Windows Vista Home Basic 64-bit edition Sp1 X64
• Microsoft Windows Vista Home Basic 64-bit edition Sp2 X64
• Microsoft Windows Vista Home Basic
• Microsoft Windows Vista Home Basic SP1
• Microsoft Windows Vista Home Basic SP2
• Microsoft Windows Vista Home Premium 64-bit edition
• Microsoft Windows Vista Home Premium 64-bit edition SP1
• Microsoft Windows Vista Home Premium 64-bit edition SP2
• Microsoft Windows Vista Home Premium
• Microsoft Windows Vista Home Premium SP1
• Microsoft Windows Vista Home Premium SP2
• Microsoft Windows Vista SP1
• Microsoft Windows Vista SP2
• Microsoft Windows Vista x64 Edition
• Microsoft Windows Vista x64 Edition SP1
• Microsoft Windows Vista x64 Edition SP2
• Microsoft Windows XP 64-bit Edition
• Microsoft Windows XP 64-bit Edition SP1
• Microsoft Windows XP Embedded
• Microsoft Windows XP Embedded SP1
• Microsoft Windows XP Embedded SP2
• Microsoft Windows XP Embedded SP3
• Microsoft Windows XP Home
• Microsoft Windows XP Home SP1
• Microsoft Windows XP Home SP2
• Microsoft Windows XP Home SP3
• Microsoft Windows XP Professional
• Microsoft Windows XP Professional SP1
• Microsoft Windows XP Professional SP2
• Microsoft Windows XP Professional SP3
• Microsoft Windows XP Professional x64 Edition
• Microsoft Windows XP Professional x64 Edition SP2
• Microsoft Windows XP Professional x64 Edition SP3
• Microsoft Windows XP Service Pack 3

Recommendations

Permit local access for trusted individuals only. Where possible, use restricted environments and restricted shells.
To exploit this vulnerability, an attacker requires local access to an affected computer. Grant local access for trusted and accountable users only.

Vendor updates are available. Please see the referenced advisory for more information.