Check Point Advisories

Yahoo! Messenger ActiveX Control YVerInfo.dll Buffer Overflow (CVE-2007-4515)

Check Point Reference: CPAI-2008-062
Date Published: 6 Oct 2007
Severity: High
Last Updated: Tuesday 27 September, 2011
Source:
Industry Reference:CVE-2007-4515
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description Yahoo! Messenger is a popular advertisement-supported instant messaging client. A buffer overflow vulnerability exists in Yahoo! Messenger. The vulnerability is due to a boundary error within the Yahoo! Messenger YVerInfo.dll ActiveX control when handling certain methods. To trigger this issue, an attacker may create a malicious web page that will exploit this vulnerability. Successful exploitation may allow execution of arbitrary code on a vulnerable system.

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

  1. In the IPS tab, click Protections and find the Yahoo! Messenger ActiveX Control YVerInfo.dll Buffer Overflow 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:  Yahoo! Messenger ActiveX control YVerInfo.dll buffer overflow

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