Home Page | Skip to Navigation | Skip to Content | Skip to Search | Skip to Footer

Internet Explorer CMarkup Use After Free (MS13-009; CVE-2013-0020)


Check Point Reference: CPAI-2013-080
Date Published:
Source: Microsoft Security Bulletin MS13-009
Industry Reference(s): CVE-2013-0020
Protection Provided by: Security Gateway
  • R70
  • R71
  • R75
Who is Vulnerable?
Internet Explorer 7
Internet Explorer 8
Internet Explorer 9
Internet Explorer 10
Vulnerability Description
A remote code execution vulnerability has been reported in Microsoft Internet Explorer.
Update/Patch Available
Apply patches from: MS13-009
Vulnerability Details
The vulnerability is due to an error in the way Internet Explorer accesses an object in memory that has been deleted. A remote attacker can exploit this issue by enticing a target victim to open a specially crafted web page. Successful exploitation could cause memory corruption in a way that would allow attackers to execute code on the target.

Protection Overview
This protection will detect and block attempts to open a malicious HTML file.

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, Protection tab and select the version of your choice.

To configure the defense, select your product from the list below and follow the related protection steps.

Security Gateway R75 / R71 / R70

How Can I Protect My Network?

  1. In the IPS tab, click Protections and find the Internet Explorer CMarkup Use After Free (MS13-009) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: Web Client Enforcement Violation
Attack Information: Internet Explorer CMarkup Use After Free (MS13-009)