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Microsoft Windows CSRSS SrvWriteConsoleOutput Code Execution (MS11-056; CVE-2011-1284)

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Check Point Reference: CPAI-2011-333
Date Published:
Severity:
Source: Microsoft Security Bulletin MS11-056
Industry Reference(s): CVE-2011-1284
Protection Provided by: Security Gateway
  • R70
  • R71
  • R75
VPN-1
  • NGX R65
VSX
  • NGX R65
Who is Vulnerable?
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 and Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Vulnerability Description
An elevation of privilege vulnerability has been reported in Windows CSRSS. Attackers can exploit this vulnerability to run arbitrary code in kernel mode. Successful exploitation may enable an attacker to install programs; view, change, or delete data; or create new accounts with full user rights.
Update/Patch Available
Apply patches from:
Microsoft Security Bulletin MS11-056
Vulnerability Details
This is an elevation of privilege vulnerability. The vulnerability is due to an integer overflow condition in CSRSS. Successful exploitation of the vulnerability may lead to arbitrary code execution in kernel mode, resulting in complete control of an attacker over an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

Protection Overview
This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway/VPN-1 product to the latest IPS/SmartDefense update. For information on how to update IPS/SmartDefense, go to SBP-2006-05, Protection tab and select the version of your choice.

To configure the defense, select your product from the list below and follow the related protection steps.

Security Gateway R75 / R71 / R70

How Can I Protect My Network?
1. In the IPS tab, click Protections and find the Microsoft Windows CSRSS SrvWriteConsoleOutput Code Execution (MS11-056) protection using the Search tool and Edit the protection's settings.
2. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: Content Protection Violation
Attack Information: Microsoft Windows CSRSS SrvWriteConsoleOutput elevation of privilege (MS11-056)