Check Point Advisories

Nullsoft Winamp AVI Stream Count Integer Overflow (CVE-2011-3834)

Vulnerability
Protection

Check Point Reference:	CPAI-2012-137
Date Published:	16 Apr 2012
Severity:	Medium
Last Updated:	Monday 16 April, 2012
Source:
Industry Reference:	CVE-2011-3834
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A remote code execution vulnerability has been reported in Nullsoft Winamp. The vulnerability is due to an integer overflow condition while handling specially crafted AVI files. A remote attacker can exploit this issue by enticing target users to open a malicious .AVI file with an affected version of Winamp. Successful exploitation would allow attackers to execute arbitrary code with the security privileges of the target user.

Protection Overview

This protection will detect and block the transferring of specially crafted .AVI files.

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 Nullsoft Winamp AVI Stream Count Integer Overflow 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: Media Player Enforcement Violation.
Attack Information: Nullsoft Winamp AVI Stream Count Integer Overflow