Check Point Advisories

Internet Explorer Malformed GIF File Double Free (MS04-025; CVE-2003-1048)

Vulnerability
Protection

Check Point Reference:	CPAI-2004-213
Date Published:	7 Dec 2009
Severity:	High
Last Updated:	Wednesday 20 March, 2013
Source:
Industry Reference:	CVE-2003-1048
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	The Graphics Interchange Format (GIF) defines a file format intended for the on-line transmission and interchange of raster graphic data. It uses the LZW compression algorithm to minimize file sizes. A double free vulnerability exists in the way Microsoft Internet Explorer handles images of the GIF file format. This vulnerability can be exploited by enticing a user to view a web page or email message containing a specially crafted .gif file. Successful exploitation can lead to a client compromise and possible remote code execution. When the vulnerable target is attacked, the vulnerable program, used to browse the crafted GIF file, will crash, creating a denial of service condition. Depending on the current setting, it may automatically restart itself. In the case of a successful code execution attack, the actual behavior will depend on the intention of the attacker.

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 Internet Explorer Malformed GIF File Double Free (MS04-025) 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 Internet Explorer malformed GIF file double free (MS04-025)