Check Point Advisories

MSN Messenger UIAutomation ActiveX Control Information Disclosure (MS08-050; CVE-2008-0082)

Vulnerability
Protection

Check Point Reference:	CPAI-2008-120
Date Published:	7 Jun 2008
Severity:	High
Last Updated:	Tuesday 12 August, 2008
Source:
Industry Reference:	CVE-2008-0082
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	Windows Messenger, MSN Messenger, and Windows Live Messenger are popular instant messaging clients for Microsoft Windows. An information disclosure vulnerability exists in Windows Messenger, MSN Messenger, and Windows Live Messenger. The vulnerability is caused by an ActiveX control that is marked safe, allowing developers to script it. To trigger this issue, an attacker may create a malicious web page that will exploit this vulnerability. Successful exploitation may allow the attacker to view and change the victim's messenger information (such as state and contact list) and to take complete control over a user's ID.

Protection Overview

This protection will detect and block the vulnerable ActiveX Control.

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 MSN Messenger UIAutomation ActiveX Control Information Disclosure (MS08-050) 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: MSN Messenger UIAutomation ActiveX control information disclosure (MS08-050)