Check Point Advisories

Google Chrome Stale Pointer in Floats Rendering Memory Corruption (CVE-2011-1804)

Check Point Reference: CPAI-2011-379
Date Published: 16 Aug 2011
Severity: High
Last Updated: Monday 25 February, 2013
Source:
Industry Reference:CVE-2011-1804
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description A memory corruption vulnerability has been reported in Google Chrome Webkit. Webkit is a development toolkit which allows third party developers to build applications that use Internet technologies such as HTML, HTTP, and others. The vulnerability exists due to the use of a stale pointer in rendering floats. A remote attacker could trigger this flaw by enticing an unsuspecting user to open a malicious HTML page. Successful exploitation may lead to a memory corruption condition, which may enable an attacker to execute arbitrary code on an affected system, in the security context of the logged in user.

Protection Overview

This protection will detect and block attempts to transfer malformed HTML documents over HTTP.

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 Google Chrome Stale Pointer in Floats Rendering 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:  Google Chrome stale pointer in floats rendering memory corruption

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