Check Point Advisories

Microsoft Silverlight Double-Free Remote Code Execution (MS12-034; CVE-2012-0176)

Check Point Reference: CPAI-2012-199
Date Published: 8 May 2012
Severity: Critical
Last Updated: Tuesday 08 May, 2012
Source:
Industry Reference:CVE-2012-0176
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description A remote code execution vulnerability has been reported in Microsoft Silverlight. The vulnerability is due to an error in the way Microsoft Silverlight frees memory while rendering specially crafted XAML glyphs. A remote attacker can exploit this issue by enticing a target user to open a web-page that contains a specially crafted Silverlight application. Successful exploitation of this vulnerability could allow an attacker to take complete control of an affected system.

Protection Overview

This protection will detect and block attempts to transfer crafted XAML glyphs.

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 Microsoft Silverlight Double-Free Remote Code Execution (MS12-034) 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:  Microsoft Silverlight Double-Free remote code execution (MS12-034)

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