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Update Protection against Microsoft Windows Media Runtime Voice Sampler Rate Code Execution Vulnerability (MS09-051)

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Check Point Reference: CPAI-2009-230
Date Published:
Severity:
Last Updated:
Source: Microsoft Security Bulletin MS09-051
Industry Reference(s): CVE-2009-0555
CVE-2009-2525
Protection Provided by: Security Gateway
  • R70
VPN-1
  • NGX R65
VSX
  • NGX R65
IPS-1
  • IPS-1
  • IPS-1 NGX R65
Who is Vulnerable?
DirectShow WMA Voice Codec, Windows Media Audio Voice Decoder, and Audio Compression Manager on:
Windows 2000 SP4
Windows XP SP2
Windows XP SP3
Windows XP Professional x64 Edition SP2
Windows Server 2003 SP2
Windows Server 2003 x64 Edition SP2

DirectShow WMA Voice Codec and Windows Media Audio Voice Decoder on:
Windows Vista
Windows Vista SP1
Windows Vista SP2
Windows Vista x64 Edition
Windows Vista x64 Edition SP1
Windows Vista x64 Edition SP2
Windows Server 2008 for 32-bit Systems
Windows Server 2008 for 32-bit Systems SP2
Windows Server 2008 for x64-based Systems
Windows Server 2008 for x64-based Systems SP2

Vulnerability Description
A remote code execution vulnerability exists in the way that Microsoft Windows Media Runtime and the Windows Media Player handle specially crafted ASF files. The Microsoft Windows Media Format Runtime provides information and tools for applications that use Windows Media content. Windows Media Player is an application for Windows that supports numerous video, audio, and image formats. ASF (Advanced Systems Format) is a file format that stores audio and video information and is specially designed to run over networks like the Internet. It is a compressed format that contains streaming audio, video, slide shows, and synchronized events. A remote attacker could exploit this issue to take complete control of an affected system remotely.
Update/Patch Available
Apply patches:
Microsoft Security Bulletin MS09-051
Vulnerability Details
CVE-2009-0555: The vulnerability is due to an error in the Windows Media Runtime that incorrectly processes specially crafted ASF files that make use of the Window Media Speech codec.

CVE-2009-2525: The vulnerability is due to an error in the Windows Media Runtime that does not properly initialize certain functions in compressed audio files.

A remote attacker could exploit these issues by convincing a user to open a malformed ASF file. Successful exploitation of this vulnerability will allow the attacker to execute arbitrary code on an affected system remotely.

Protection Overview
This protection will detect and block the transferring of malformed ASF files over HTTP.

In order for the protection to be activated, update your Security Gateway/VPN-1 product to the latest IPS/SmartDefense update. For information on how to update IPS/SmartDefense, go to SBP-2006-05, Protection tab and select the version of your choice.

To configure the defense, select your product from the list below and follow the related protection steps.

Security Gateway R70

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > Application Intelligence > Content Protection.
2. In the right pane, double-click the Microsoft Windows Media Runtime Voice Sampler Rate Code Execution (MS09-051) protection.
3. In the Protection Details window, click on Edit. Choose the protection's Action (Override IPS Policy with: Prevent/Detect), and apply Additional Settings.
4. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:

For CVE-2009-0555:
Attack Name: Content Protection Violation
Attack Information: Microsoft Windows Media Runtime voice sampler rate code execution (MS09-051)

For CVE-2009-2525:
Attack Name: Content Protection Violation
Attack Information: Microsoft Windows Media Runtime compressed audio heap corruption (MS09-051)

VPN-1 NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence > Content Protection > Microsoft Windows Media Runtime Voice Sampler Rate Code Execution (MS09-051).
2. In the configuration pane, under Settings > Mode, check Active.
3. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:

For CVE-2009-0555:
Attack Name: Content Protection Violation
Attack Information: Microsoft Windows Media Runtime voice sampler rate code execution (MS09-051)

For CVE-2009-2525:
Attack Name: Content Protection Violation
Attack Information: Microsoft Windows Media Runtime compressed audio heap corruption (MS09-051)

VPN-1 VSX NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence > Content Protection > Microsoft Windows Media Runtime Voice Sampler Rate Code Execution (MS09-051).
2. In the configuration pane, under Settings > Mode, check Active.
3. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:

For CVE-2009-0555:
Attack Name: Content Protection Violation
Attack Information: Microsoft Windows Media Runtime voice sampler rate code execution (MS09-051)

For CVE-2009-2525:
Attack Name: Content Protection Violation
Attack Information: Microsoft Windows Media Runtime compressed audio heap corruption (MS09-051)

IPS-1 & IPS-1 NGX R65

How Can I Protect My Network?

1. In the IPS-1 Policy Manager, click on the Protection tab.
2. In the Protection tree, click Application Intelligence > Badfiles, and select the ASF Parser protection group.
3. Click Microsoft Windows Media Runtime Voice Sampler Rate Code Execution (MS09-051) (IPS-1 NGX R65 only).
4. In the configuration pane, under Settings, check Active.
5. Click on Install Policy.

How Do I Know if My Network is Under Attack?

Upon attack, the following entries will be logged:

Alert Name: Badfiles ASF file Alert/Filter
Description: Microsoft Windows Media Runtime Voice Sampler Rate Code Execution (MS09-051)