Staying Safe in Times of Cyber Uncertainty
Check Point Advisories

Microsoft Windows TCP/IP Stack Reference Counter Overflow (MS11-083; CVE-2011-2013)

Check Point Reference: CPAI-2011-560
Date Published: 6 Dec 2011
Severity: Critical
Last Updated: Saturday 01 January, 2011
Source: Microsoft Security Bulletin MS11-083
Industry Reference:CVE-2011-2013
Protection Provided by:
Who is Vulnerable? 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
Vulnerability Description A remote code execution vulnerability has been reported in Microsoft Windows TCP/IP stack.
Vulnerability DetailsThe vulnerability is caused due to an integer overflow in Windows TCP/IP stack while processing a continuous flow of specially crafted UDP packets. A remote attacker could trigger this issue by sending a continuous flow of specifically crafted UDP packets to a closed port on a target system. Successful exploitation could allow an attacker to run arbitrary code in kernel mode.

Protection Overview

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