Check Point Advisories

Microsoft Windows CSRSS winsrv Integer Overflow Code Execution (MS11-056; CVE-2011-1870)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-335
Date Published:	12 Jul 2011
Severity:	High
Last Updated:	Tuesday 12 July, 2011
Source:
Industry Reference:	CVE-2011-1870
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. Attackers can exploit this vulnerability to run arbitrary code in kernel mode. Successful exploitation of this vulnerability may result 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

In the IPS tab, click Protections and find the Microsoft Windows CSRSS winsrv Integer Overflow Code Execution (MS11-056) protection using the Search tool and Edit the protection's settings.
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 winsrv integer overflow code execution (MS11-056)