Check Point Advisories

Microsoft Internet Explorer CTreeNode Use After Free (MS12-071; CVE-2012-4775)

Vulnerability
Protection

Check Point Reference:	CPAI-2012-807
Date Published:	13 Nov 2012
Severity:	Critical
Last Updated:	Tuesday 13 November, 2012
Source:
Industry Reference:	CVE-2012-4775
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description	A remote code execution vulnerability has been reported in Internet Explorer. The vulnerability is due an error in the way that Internet Explorer accesses an object that has not been correctly initialized or has been deleted. A remote attacker can exploit this issue by enticing a user to open a specially crafted web-page with an affected version of Internet Explorer. Successful exploitation could allow an attacker to take complete control of the target system.

Protection Overview

This protection will detect and block attempts to open a specially crafted HTML file.

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 Microsoft Internet Explorer CTreeNode Use After Free (MS12-071) 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: Microsoft Internet Explorer CTreeNode use after free (MS12-071)