Check Point Advisories

Internet Explorer Style Object Memory Corruption (MS11-057; CVE-2011-1964)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-359
Date Published:	9 Aug 2011
Severity:	Critical
Last Updated:	Monday 26 December, 2016
Source:	Microsoft MS11-057
Industry Reference:	CVE-2011-1964
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?	Internet Explorer 6 Internet Explorer 7 Internet Explorer 8 Internet Explorer 9
Vulnerability Description	A memory corruption vulnerability has been reported in Microsoft Internet Explorer. The vulnerability is due to an error in the way Internet Explorer attempts to access objects that have not been initialized or have been deleted. A remote attacker could trigger this flaw by enticing an unsuspecting victim to open a specially crafted web page. Successful exploitation of this vulnerability may cause a memory corruption condition which may enable an attacker to execute arbitrary code in the security context of the logged in user.
Update/Patch Avaliable	Apply patches from: MS11-057

Protection Overview

This protection will detect and block attempts to open a malicious 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 / R65

In the IPS tab, click Protections and find the Internet Explorer Style Object Memory Corruption (MS11-057) 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 Style object memory corruption (MS11-057)