Check Point Advisories

Microsoft Windows Kernel Integer Truncation Privilege Escalation (MS11-011; CVE-2011-0045)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-082
Date Published:	10 Mar 2011
Severity:	High
Last Updated:	Thursday 10 March, 2011
Source:
Industry Reference:	CVE-2011-0045
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	The Windows kernel is the core of the operating system. It provides system-level services such as device management and memory management, allocates processor time to processes, and manages error handling. An elevation of privilege vulnerability has been reported due to the way that the Windows kernel allocates memory when reading user-supplied data. The vulnerability is due to an error in the Windows kernel that fails to properly validate user-supplied data before allocating memory. An attacker could run a specially crafted application that could exploit this flaw and take complete control over the 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 Kernel Integer Truncation Privilege Escalation (MS11-011) 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 Kernel integer truncation privilege escalation (MS11-011)