Check Point Advisories

Microsoft Internet Explorer Element Index Memory Corruption (MS11-081; CVE-2011-1999)

Check Point Reference: CPAI-2011-458
Date Published: 11 Oct 2011
Severity: Critical
Last Updated: Thursday 28 March, 2013
Source:
Industry Reference:CVE-2011-1999
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description A memory corruption vulnerability has been reported in Internet Explorer. The vulnerability is due an error in Internet Explorer when validating the integrity of certain DOM elements. A remote attacker may exploit this vulnerability by enticing a user to open a malicious web-page. Successful exploitation may cause a memory corruption in a way that will allow an attacker to execute arbitrary code on an affected system, in the security context of the logged on user.

Protection Overview

This protection will detect and block attempts to open a specially crafted web-page.

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

  1. In the IPS tab, click Protections and find the Microsoft Internet Explorer Element Index Memory Corruption (MS11-081) 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:  Web Client Enforcement Violation.
Attack Information:  Microsoft Internet Explorer element index memory corruption (MS11-081)

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