Check Point Advisories

Internet Explorer Malformed GIF File Double Free (MS04-025) - Ver2 (CVE-2003-1048)

Check Point Reference: CPAI-2015-0326
Date Published: 26 Mar 2015
Severity: Critical
Last Updated: Thursday 26 March, 2015
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

  1. In the IPS tab, click Protections and find the Internet Explorer Malformed GIF File Double Free (MS04-025) - Ver2 protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Client Enforcement Violation.
Attack Information:  Internet Explorer Malformed GIF File Double Free (MS04-025) - Ver2

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