Check Point Advisories

Internet Explorer VML Buffer Overrun (MS07-004; CVE-2007-0024)

Vulnerability
Protection

Check Point Reference:	CPAI-2007-007
Date Published:	9 Jan 2007
Severity:	High
Last Updated:	Tuesday 09 January, 2007
Source:
Industry Reference:	CVE-2007-0024
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	Microsoft Internet Explorer (IE) contains a remote code execution vulnerability. The vulnerability exists in Microsoft Vector Markup Language (VML). VML is a set of XML tags used for exchange, editing, and delivery of vector graphics on the web. By convincing a user to visit a specially crafted Web page, a remote attacker may trigger this vulnerability to execute arbitrary code on an affected system. The vulnerability is due to a memory corruption error in Microsoft Vector Markup Language implementation in Microsoft Internet Explorer. A remote attacker can trigger this flaw by convincing a user to view a specially crafted VML document with unspecified integer properties. Successful exploitation could allow execution of arbitrary code, once the malicious page is loaded.

Protection Overview

This protection will block specially crafted HTMLs with malicious integer properties.The detect mode makes it possible to track unauthorized access attempts without blocking them.

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 / R65

In the IPS tab, click Protections and find the Internet Explorer VML Buffer Overrun (MS07-004) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Client Enforcement Violation.
Attack Information: Internet Explorer VML buffer overrun (MS07-004)