Check Point Advisories

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

Check Point Reference: CPAI-2011-333
Date Published: 12 Jul 2011
Severity: High
Last Updated: Tuesday 20 December, 2011
Source:
Industry Reference:CVE-2011-1284
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description An elevation of privilege vulnerability has been reported in Windows CSRSS. Remote attackers can exploit this vulnerability to run arbitrary code in kernel mode. The vulnerability is due to an integer overflow condition that could enable an attacker to execute code in the context of the system account. 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.

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 product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75 / R71 / R70 / R65

  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 Security Gateways.

This protection's log will contain the following information:

Attack Name:  Content Protection Violation.
Attack Information:  Microsoft Windows CSRSS SrvWriteConsoleOutput code execution (MS11-056)

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