Check Point Advisories

Mozilla Firefox Wrapped JavaScript Code Execution (CVE-2005-1531)

Vulnerability
Protection

Check Point Reference:	CPAI-2005-244
Date Published:	5 Oct 2009
Severity:	Medium
Last Updated:	Monday 05 October, 2009
Source:
Industry Reference:	CVE-2005-1531
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	The Mozilla web browser and its derivatives, Firefox, Netscape, and K-Meleon are applications designed for tasks related to browsing the web, such as displaying HTML encoded pages, downloading files, etc. To conform to the W3C Naming and Addressing specification, these products use the Uniform Resource Locator (URL) to represent network and local resources. There exists a vulnerability in Mozilla web browser and its derivatives. The flaw is caused by insufficient validation when handling javascript URLs. A remote attacker can exploit this issue to execute arbitrary JavaScript code with escalated privileges. A successful attack will result in arbitrary code execution with the privileges of currently logged in user. The behaviour of the target is dependent on the intention of the malicious code. The timing of the script execution will depend on the attack approach.

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 Mozilla Firefox Wrapped JavaScript Code Execution 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: Web Client Enforcement Violation.
Attack Information: Mozilla Firefox wrapped JavaScript code execution