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CVE Number Vulnerability Product Severity Date
MS11-043 Vulnerability in SMB Client Could Allow Remote Code Execution (2536276) Windows XP Critical 15-06-2011

Technical Information

Brief overview of the risk:
The vulnerability could allow remote code execution if an attacker sent a specially crafted SMB response to a client-initiated SMB request. To exploit the vulnerability, an attacker must convince the user to initiate an SMB connection to a specially crafted SMB server.
Detailed Information on the risk:

An unauthenticated remote code execution vulnerability exists in the way that the Microsoft Server Message Block (SMB) client implementation handles specially crafted SMB responses. An attempt to exploit the vulnerability would not require authentication, allowing an attacker to exploit the vulnerability by sending a specially crafted SMB response to a client-initiated SMB request. An attacker who successfully exploited this vulnerability could execute arbitrary code and take complete control of an affected system.


Further information on this exploit is available at : MS11-043

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 1 and Windows Vista Service Pack 2
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
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