Check Point Advisories

Microsoft Word LVL Structure Parsing Remote Code Execution (MS10-079; CVE-2010-3220)

Vulnerability
Protection

Check Point Reference:	CPAI-2010-291
Date Published:	12 Oct 2010
Severity:	High
Last Updated:	Tuesday 12 October, 2010
Source:
Industry Reference:	CVE-2010-3220
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	Microsoft Word is a popular word processing software. A remote code execution vulnerability has been identified in Microsoft Word. The vulnerability is due to an error in Microsoft Word that fails to properly parse LVL structures within specially crafted Word files. A remote attacker could trigger this flaw by convincing a victim to open a specially crafted Word file. Successful exploitation of this issue may corrupt system memory, allowing execution of arbitrary code on a vulnerable system.

Protection Overview

This protection will detect and block the transferring of malformed Word files over HTTP.

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 Microsoft Word LVL Structure Parsing Remote Code Execution (MS10-079) 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 Word LVL structure parsing remote code execution (MS10-079)