Check Point Advisories

Microsoft Works WPS File Field Length Handling Stack Overflow (MS08-011; CVE-2007-0216; CVE-2008-0108)

Vulnerability
Protection

Check Point Reference:	CPAI-2008-029
Date Published:	12 Feb 2008
Severity:	High
Last Updated:	Thursday 24 September, 2015
Source:
Industry Reference:	CVE-2007-0216 CVE-2008-0108
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	Microsoft Works is home productivity software suite with fewer features than the Microsoft Office suite. The Microsoft Works Converter allows the user to open, edit, and save files in the Microsoft Works file format. CVE-2007-0216: The vulnerability is due to an error in the Microsoft Works Converter fails to properly validate section length headers. CVE-2008-0108: The vulnerability is due to an error in the Microsoft Works Converter fails to properly validate various field lengths information. A remote attacker could trigger these flaws by convincing a victim to open a specially crafted Microsoft Works file. Successful exploitation of this issue may allow execution of arbitrary code on a vulnerable system.

Protection Overview

This protection will detect and block the transferring of malformed MS Works files over HTTP.The detect mode makes it possible to track unauthorized traffic without blocking it.

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 Works WPS File Field Length Handling Stack Overflow (MS08-011) 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 Works file converter WPS file section length headers memory corruption (MS08-011)