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MS.Windows.WKSSVC.Privilege.Elevation

Release Date

Aug 12, 2009

Severity

high

Impact

Privilege escalation: Remote attackers can gain elevated privileges

Description

This security update resolves a privately reported vulnerability in the Windows Workstation Service. The vulnerability could allow elevation of privilege if an attacker created a specially crafted RPC message and sent the message to an affected system. An attacker who successfully exploited this vulnerability could execute arbitrary code and take complete 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 correcting the manner in which the Workstation service allocates and frees memory.

Affected Products

Windows XP Service Pack 2 and 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, Windows Vista Service Pack 1, and Windows Vista Service Pack 2
Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2*
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2*
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2

Recommended Actions

Apply the patch, available from the vendor's website:
http://www.microsoft.com/technet/security/Bulletin/MS09-041.mspx

Coverage

IPS
VCM

Common Vulnerabilities and Exposures (CVE)

CVE-2009-1544

Reference/s

http://technet.microsoft.com/en-us/security/bulletin/MS09-041.mspx (MS-ID)

Reference: VID-17658