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CVE Number Vulnerability Product Severity Date
MS09-041 Vulnerability in Workstation Service Could Allow Elevation of Privilege (971657) Microsoft Windows Critical 12-08-2009

Technical Information

Brief overview of the risk:
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.
Detailed Information on the risk:

An elevation of privilege vulnerability exists in the Windows Workstation Service due to a possible “Double Free” condition occurring in the service. An attacker who successfully exploited this vulnerability could run arbitrary code with elevated privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.


Further information on this exploit is available at : MS09-041

Affected Software

Microsoft Windows Server 2003 Service Pack 2
Microsoft Windows Server 2003 with SP2 for Itanium-based Systems
Microsoft Windows Server 2003 x64 Edition Service Pack 2
Microsoft Windows XP Professional x64 Edition Service Pack 2
Microsoft Windows XP Service Pack 2
Microsoft Windows XP Service Pack 3
Windows Server 2008 for 32-bit Systems
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems
Windows Server 2008 for Itanium-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Vista
Windows Vista Service Pack 1
Windows Vista Service Pack 2
Windows Vista x64 Edition
Windows Vista x64 Edition Service Pack 1
Windows Vista x64 Edition Service Pack 2