Check Point Advisories

Mozilla Firefox Top-level Script Object Offset Calculation Memory Corruption (CVE-2009-3073)

Check Point Reference: CPAI-2010-117
Date Published: 12 May 2010
Severity: High
Last Updated: Wednesday 12 May, 2010
Source:
Industry Reference:CVE-2009-3073
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description Mozilla Firefox is a web browser developed by Mozilla Foundation. The browser is capable of interpreting and rendering many types of content published on the Internet, including various versions of HTML, CSS, XML, XUL, JavaScript, various graphics formats, and so on. The browser runs on the Windows, Macintosh, Unix and Linux-based platforms. A memory corruption vulnerability exists in Mozilla Firefox web browser. The vulnerability is due to an improper calculation of an object offset in a specific case of the top-level script. Remote attackers can exploit this vulnerability by enticing target users to visit a malicious web page. Successful exploitation would cause a memory corruption that may lead to arbitrary code execution in the security context of the logged in user, or terminate the application abnormally.

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 / R71 / R70

  1. In the IPS tab, click Protections and find the Mozilla Firefox Top-level Script Object Offset Calculation 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 top-level script object offset calculation memory corruption

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