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Microsoft Internet Explorer CFormElement Use After Free (MS12-071; CVE-2012-1538)

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Check Point Reference: CPAI-2012-805
Date Published:
Severity:
Source: Microsoft Security Bulletin MS12-071
Industry Reference(s): CVE-2012-1538
Protection Provided by: Security Gateway
  • R70
  • R71
  • R75
Who is Vulnerable?
Internet Explorer 9
Vulnerability Description
A remote code execution vulnerability has been reported in Internet Explorer.
Update/Patch Available
Apply patches from: MS12-071
Vulnerability Details
The vulnerability is due an error in the way that Internet Explorer accesses an object that has not been correctly initialized or has been deleted. A remote attacker can exploit this issue by enticing a user to open a specially crafted web-page with an affected version of Internet Explorer. Successful exploitation could allow an attacker to take complete control of the target system.

Protection Overview
This protection will detect and block attempts to open a specially crafted 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 Microsoft Internet Explorer CFormElement Use After Free (MS12-071) 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: Microsoft Internet Explorer CFormElement Use After Free (MS12-071)