Check Point Advisories

Internet Explorer Nested Object Tag Handling Memory Corruption (MS06-021; CVE-2006-1992)

Check Point Reference: CPAI-2006-188
Date Published: 21 Feb 2010
Severity: High
Last Updated: Sunday 28 September, 2014
Source:
Industry Reference:CVE-2006-1992
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description Microsoft Internet Explorer (IE) is the most widely used web browser application. The browser is capable of processing HTML, scripting languages, and interpretation of various other popular Internet specifications. There exists a memory corruption vulnerability in Microsoft Internet Explorer. The vulnerability is caused due to a flaw while processing nested HTML Object tags leading to memory corruption. A remote attacker may exploit this issue via a malicious web page to cause denial of service or execute arbitrary code in the context of the currently logged in user. In case of an attack where code injection is unsuccessful, the target application may terminate or become unresponsive. Note that triggering this vulnerability sometimes occurs upon a page refresh or loading another resource. In case of an attack where code injection and execution is successful, the behavior of the target host is dependent on the intended purpose of the injected code. Any code injected will run within the privileges of the currently logged in user.

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 R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Internet Explorer Nested Object Tag Handling Memory Corruption (MS06-021) 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 Internet Explorer nested object tag handling memory corruption (MS06-021)

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