Check Point Advisories

Mozilla Firefox File Input Element Memory Corruption (CVE-2008-5021)

Check Point Reference: CPAI-2008-375
Date Published: 13 May 2010
Severity: High
Last Updated: Monday 26 March, 2012
Source:
Industry Reference:CVE-2008-5021
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description Firefox is an open source web browser developed by Mozilla Foundation. The application is capable of interpreting and rendering many types of Internet content, including various versions of HTML, XML, CSS (Cascade Style Sheet), JavaScript, various graphic formats, and so on. Firefox is made available for Windows, Macintosh, Unix and Linux based platforms. There exists vulnerability in Mozilla Firefox. The vulnerability is due to a race condition when handling a DOM method on a specific HTML form object. A remote attacker can exploit this vulnerability by enticing the target user to open a crafted web page. Successful exploitation would allow for arbitrary code injection and execution with the privileges of the currently logged on user. In case of an attack where code injection and execution is successful, the behavior of the target system is dependent on the intended purpose of the injected code. Any code injected would run in the security context of the logged in user. In case of an attack where code injection is successful, the vulnerable application will terminate abnormally while parsing the malicious document.

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 Mozilla Firefox File Input Element Memory Corruption 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:  Mozilla Firefox file input element memory corruption

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