Check Point Advisories

Microsoft Office Word Hidden Border Use-After-Free (MS11-089; CVE-2011-1983)

Vulnerability
Protection

Check Point Reference:	CPAI-2012-140
Date Published:	24 Apr 2012
Severity:	High
Last Updated:	Tuesday 24 April, 2012
Source:
Industry Reference:	CVE-2011-1983
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A remote code execution vulnerability has been reported in Microsoft Word. The vulnerability is due to a use-after-free condition caused by the improper handling of certain tags. A remote attacker may exploit this issue by enticing a target user to open a specially crafted Word document. Successful exploitation would allow an attacker to execute arbitrary code in the security context of the logged-on user.

Protection Overview

This protection will detect and block the transferring of specially crafted Word documents.

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

In the IPS tab, click Protections and find the Microsoft Office Word Hidden Border Use-After-Free (MS11-089) 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 Office Word hidden Border use-after-free (MS11-089)