Check Point Advisories

Microsoft DirectX WAV and AVI File Parsing Code Execution (MS07-064; CVE-2007-3895)

Vulnerability
Protection

Check Point Reference:	CPAI-2007-361
Date Published:	1 Oct 2009
Severity:	High
Last Updated:	Thursday 01 October, 2009
Source:
Industry Reference:	CVE-2007-3895
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Microsoft DirectX is a set of libraries that aim for accelerated video and audio experience on Microsoft Windows operating system. DirectX can parse multiple audio or video file formats which include WAV and AVI files. The default handler of AVI and WAV files on Windows systems is Windows Media Player, which utilizes the file parsing functions provided by DirectX. A buffer overflow vulnerability exists in Microsoft DirectX application framework. The vulnerability is due to the way certain DirectX libraries handle specially crafted WAV and AVI files. A remote attacker could exploit this vulnerability by persuading a user to open a specially crafted WAV or AVI file, potentially causing arbitrary code to be injected and executed in the security context of the logged in user. In an attack case where code injection is not successful, the application utilizing the vulnerable DirectX library will terminate. In a more sophisticated attack scenario where code injection is successful, the behaviour of the target host is entirely dependent on the intended function of the injected code. The code in such a case would execute within the security context of the current user. The affected application would also most likely stop functioning as a result of such an attack.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability

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 DirectX WAV and AVI File Parsing Code Execution (MS07-064) 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 DirectX WAV and AVI file parsing code execution (MS07-064)