Check Point Advisories

Google Chrome XSSAuditor Filter Security Policy Bypass

Vulnerability
Protection

Check Point Reference:	CPAI-2014-0930
Date Published:	19 Feb 2014
Severity:	High
Last Updated:	Wednesday 29 September, 2021
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A policy bypass vulnerability exists in Google Chrome. The vulnerability is due a design weakness in Chrome XSSAuditor. By inserting JavaScript in the srcdoc attribute of an IFRAME tag, the Cross-Site Scripting filter can be bypassed. An attacker can exploit this weakness to further facilitate exploiting known cross-site vulnerabilities.

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 R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Google Chrome XSSAuditor Filter Security Policy Bypass 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: Google Chrome XSSAuditor Filter Security Policy Bypass