Check Point Advisories

Internet Explorer OnLoad Event Memory Corruption (MS11-081; CVE-2011-1997)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-455
Date Published:	11 Oct 2011
Severity:	Critical
Last Updated:	Thursday 22 December, 2016
Source:	Microsoft MS11-081
Industry Reference:	CVE-2011-1997
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70
Who is Vulnerable?	Internet Explorer 6
Vulnerability Description	A memory corruption vulnerability has been reported in Internet Explorer. The vulnerability is due to an error in the way IE accesses objects that have been deleted. 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.
Update/Patch Avaliable	Apply patches from: MS11-081

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

In the IPS tab, click Protections and find the Internet Explorer OnLoad Event Memory Corruption (MS11-081) 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: Web Client Enforcement Violation.
Attack Information: Internet Explorer onLoad event memory corruption (MS11-081)