Check Point Advisories

Microsoft Media Player ehtrace.dll Insecure Library Loading (MS11-015; CVE-2011-0032)

Check Point Reference: CPAI-2011-054
Date Published: 8 Mar 2011
Severity: Critical
Last Updated: Wednesday 17 December, 2014
Source:
Industry Reference:CVE-2011-0032
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description DirectShow is a DirectX low-level Application Programming Interface (API) used by Windows programs for multimedia support. Within DirectX, the DirectShow technology performs client-side audio and video sourcing, manipulation, and rendering. A remote code execution vulnerability has been reported in the way that Microsoft DirectShow handles the loading of DLL files. The vulnerability is caused when Microsoft DirectShow incorrectly restricts the path used for loading external libraries. An attacker could convince a user to open a legitimate Windows Media Player file (such as a .wtv, .drv-ms, or .mpg file) that is located in the same network directory as a specially crafted dynamic link library (DLL) file. Then, while opening the media file, Microsoft DirectShow could attempt to load the DLL file and execute any code it contained. Successful exploitation of this vulnerability could allow the attacker to take complete control of an affected system.

Protection Overview

This protection will detect and block the transferring of suspicious DLL files over CIFS and WebDav.

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 Microsoft Media Player ehtrace.dll Insecure Library Loading (MS11-015) 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:  Windows SMB Protection Violation.
Attack Information:  Microsoft Media Player ehtrace.dll insecure library loading (MS11-015)

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