Security Bulletin

Microsoft Security Bulletin MS10-052 - Critical

Vulnerability in Microsoft MPEG Layer-3 Codecs Could Allow Remote Code Execution (2115168)

Published: August 10, 2010

Version: 1.0

General Information

Executive Summary

This security update resolves a privately reported vulnerability in Microsoft MPEG Layer-3 audio codecs. The vulnerability could allow remote code execution if a user opens a specially crafted media file or receives specially crafted streaming content from a Web site or any application that delivers Web content. An attacker who successfully exploited this vulnerability could gain the same user rights as the local user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

This security update is rated Critical for all supported editions of Windows XP and Windows Server 2003 (except supported Itanium-based editions). For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerability by correcting the way that the Microsoft MPEG Layer-3 audio codecs handle the MPEG Layer-3 audio stream in specially crafted media files. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

Recommendation. The majority of customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates and install this update manually. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.

For administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update immediately using update management software, or by checking for updates using the Microsoft Update service.

See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.

Known Issues. None

Affected and Non-Affected Software

The following software have been tested to determine which versions or editions are affected. Other versions or editions are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, visit Microsoft Support Lifecycle.

Affected Software

Non-Affected Software

Frequently Asked Questions (FAQ) Related to This Security Update

Where are the file information details?
Refer to the reference tables in the Security Update Deployment section for the location of the file information details.

I am using an older release of the software discussed in this security bulletin. What should I do?
The affected software listed in this bulletin have been tested to determine which releases are affected. Other releases are past their support life cycle. For more information about the product lifecycle, visit the Microsoft Support Lifecycle Web site.

It should be a priority for customers who have older releases of the software to migrate to supported releases to prevent potential exposure to vulnerabilities. To determine the support lifecycle for your software release, see Select a Product for Lifecycle Information. For more information about service packs for these software releases, see Lifecycle Supported Service Packs.

Customers who require custom support for older software must contact their Microsoft account team representative, their Technical Account Manager, or the appropriate Microsoft partner representative for custom support options. Customers without an Alliance, Premier, or Authorized Contract can contact their local Microsoft sales office. For contact information, visit the Microsoft Worldwide Information Web site, select the country in the Contact Information list, and then click Go to see a list of telephone numbers. When you call, ask to speak with the local Premier Support sales manager. For more information, see the Microsoft Support Lifecycle Policy FAQ.

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

The following severity ratings assume the potential maximum impact of the vulnerability. For information regarding the likelihood, within 30 days of this security bulletin's release, of the exploitability of the vulnerability in relation to its severity rating and security impact, please see the Exploitability Index in the August bulletin summary. For more information, see Microsoft Exploitability Index.

MPEG Layer-3 Audio Decoder Buffer Overflow Vulnerability - CVE-2010-1882

A remote code execution vulnerability exists in the way that Microsoft DirectShow MP3 filter handles supported format files. This vulnerability could allow code execution if a user opened a specially crafted audio file. If a user is logged on with administrative user rights, an attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2010-1882.

Mitigating Factors for MPEG Layer-3 Audio Decoder Buffer Overflow Vulnerability - CVE-2010-1882

Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors may be helpful in your situation:

• An attacker who successfully exploited this vulnerability could gain the same user rights as the local user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
• In a Web-based attack scenario, an attacker could host a Web site that contains a Web page that is used to exploit this vulnerability. In addition, compromised Web sites and Web sites that accept or host user-provided content or advertisements could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these Web sites. Instead, an attacker would have to convince users to visit the Web site, typically by getting them to click a link in an e-mail message or Instant Messenger message that takes users to the attacker’s Web site.
• The vulnerability cannot be exploited automatically through e-mail. For an attack to be successful, a user must open an attachment that is sent in an e-mail message.

Workarounds for MPEG Layer-3 Audio Decoder Buffer Overflow Vulnerability - CVE-2010-1882

Workaround refers to a setting or configuration change that does not correct the underlying vulnerability but would help block known attack vectors before you apply the update. Microsoft has tested the following workarounds and states in the discussion whether a workaround reduces functionality:

• Unregister l3codecx.ax

  On Windows XP and Windows Server 2003 systems, run the following commands from a command prompt.

  For 32-bit Windows:

  Regsvr32.exe -u %WINDIR%\system32\l3codecx.ax

  For 64-bit Windows:

  Regsvr32.exe -u %WINDIR%\syswow64\l3codecx.ax

  Impact of workaround. MPEG Layer-3 Parsing is disabled in applications that use DirectShow to play MPEG Layer-3 content.

  How to undo the workaround.

  On Windows XP and Windows Server 2003 systems, run the following commands from a command prompt.

  For 32-bit Windows:
  Regsvr32.exe %WINDIR%\system32\l3codecx.ax

  For 64-bit Windows:

  Regsvr32.exe %WINDIR%\syswow64\l3codecx.ax

• Deny access to l3codecx.ax

  On Windows XP and Windows Server 2003 systems run the following commands from a command prompt.

  For 32-bit Windows:

  cacls %WINDIR%\system32\l3codecx.ax /E /P everyone:N

  For 64-bit Windows:

  cacls %WINDIR%\syswow64\l3codecx.ax /E /P everyone:N

  Impact of workaround. MPEG Layer-3 Parsing is disabled in applications that use DirectShow to play MPEG Layer-3 content.

  How to undo the workaround.

  On Windows XP and Windows Server 2003 systems run the following commands from a command prompt.

  For 32-bit Windows:

  cacls %WINDIR%\system32\l3codecx.ax /E /R everyone

  For 64-bit Windows:

  cacls %WINDIR%\syswow64\l3codecx.ax /E /R everyone

• Disable MPEG Layer-3 parsing in DirectShow

  Removing the registry key specified below prevents MPEG Layer-3 parsing in applications that use DirectShow to play MPEG Layer-3 content.

  Note Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk. For information about how to edit the registry, view the "Changing Keys And Values" Help topic in Registry Editor (Regedit.exe) or view the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe.

  Using the Interactive Method

  For 32-bit Windows systems:

  1. Click Start, click Run, type Regedit in the Open box, and then click OK.
  2. Locate the following subkey:
     HKEY_CLASSES_ROOT\CLSID\{38BE3000-DBF4-11D0-860E-00A024CFEF6D}
  3. On the File menu, click Export.
  4. In the Export Registry File dialog box, enter MP3_Parser_Backup.reg and click Save.
     Note This will create a backup of this registry key in the My Documents folder by default.
  5. Press the Delete key on the keyboard to delete the registry key. When prompted to delete the registry key via the Confirm Key Delete dialog box, click Yes.

  For 64-bit Windows systems:

  1. Click Start, click Run, type Regedit in the Open box, and then click OK.
  2. Locate the following subkey:
     HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{38BE3000-DBF4-11D0-860E-00A024CFEF6D}
  3. On the File menu, click Export.
  4. In the Export Registry File dialog box, enter MP3_Parser_Backup1.reg and click Save.
     Note This will create a backup of this registry key in the My Documents folder by default.
  5. Press the Delete key on the keyboard to delete the registry key. When prompted to delete the registry key via the Confirm Key Delete dialog box, click Yes.
  6. Click Start, click Run, type Regedit in the Open box, and then click OK.
  7. Locate the following subkey:
     HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{38BE3000-DBF4-11D0-860E-00A024CFEF6D}
  8. On the File menu, click Export.
  9. In the Export Registry File dialog box, enter MP3_Parser_Backup 2.reg and click Save.
     Note This will create a backup of this registry key in the My Documents folder by default.
  10. Press the Delete key on the keyboard to delete the registry key. When prompted to delete the registry key via the Confirm Key Delete dialog box, click Yes.

  Using a Managed Deployment Script

  1. Create a backup copy of the registry keys by using a managed deployment script that contains the following commands:
     For 32-bit Windows systems:

     Regedit.exe /e MP3_Parser_Backup.reg HKEY_CLASSES_ROOT\CLSID\{38BE3000-DBF4-11D0-860E-00A024CFEF6D}
     For 64-bit Windows Systems:

     Regedit.exe /e MP3_Parser_Backup.reg HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{38BE3000-DBF4-11D0-860E-00A024CFEF6D}

  2. Next, save the following to a file with a .REG extension, such as Disable_MP3_Parser.reg:
     For 32-bit Windows systems:

     Windows Registry Editor Version 5.00
[-HKEY_CLASSES_ROOT\CLSID\{38BE3000-DBF4-11D0-860E-00A024CFEF6D}]
     For 64-bit Windows Systems:

     Windows Registry Editor Version 5.00
[-HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{38BE3000-DBF4-11D0-860E-00A024CFEF6D}]

  3. Run the above registry script on the target machine with the following command from an elevated command prompt:
     Regedit.exe /s Disable_MP3_Parser.reg

  Impact of workaround. MPEG Layer-3 Parsing is disabled in applications that use DirectShow to play MPEG Layer-3 content.

  How to undo the workaround.

  Using the Interactive Method

  For 32-bit Windows systems:

  1. Click Start, click Run, type Regedit in the Open box, and then click OK.
  2. Click the File menu and select Import.
  3. In the Import Registry File dialog box, select MP3_Parser_Backup.reg and click Open.

  For 64-bit Windows systems:

  1. Click Start, click Run, type Regedit in the Open box, and then click OK.
  2. Click the File menu and select Import.
  3. In the Import Registry File dialog box, select MP3_Parser_Backup1.reg and click Open.
  4. In the Import Registry File dialog box, select MP3_Parser_Backup2.reg and click Open.

  Using a Managed Deployment Script

  For 32-bit Windows systems:

  Restore the original state by running the following command:

  Regedit.exe /s MP3_Parser_Backup.reg

  For 64-bit Windows systems:

  Restore the original state by running the following command:

  Regedit.exe /s MP3_Parser_Backup.reg

FAQ for MPEG Layer-3 Audio Decoder Buffer Overflow Vulnerability - CVE-2010-1882

What is the scope of the vulnerability? 
This is a remote code execution vulnerability. An attacker who successfully exploited this vulnerability could take complete control of an affected system remotely. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

What causes the vulnerability? 
The Microsoft MPEG Layer-3 audio codecs do not properly handle specially crafted media files containing an MPEG Layer-3 audio stream.

What are Microsoft MPEG Layer-3 audio codecs? 
The vulnerable MPEG Layer-3 audio codecs are the MPEG Layer-3 Audio Codec for Microsoft DirectShow (l3codecx.ax). This MPEG Layer-3 audio codec is delivered as part of Windows Media and as a part of the Windows operating system.

What is DirectShow? 
DirectX consists of a set of low-level Application Programming Interfaces (APIs) used by Windows programs for multimedia support. Within DirectX, the DirectShow technology performs client-side audio and video sourcing, manipulation and rendering.

Microsoft DirectShow is used for streaming media on Microsoft Windows operating systems. DirectShow is used for high-quality capture and playback of multimedia streams. It automatically detects and uses video and audio acceleration hardware when available, but also supports systems without acceleration hardware. DirectShow is also integrated with other DirectX technologies. Some examples of applications that you can create using DirectShow include DVD players, video editing applications, AVI to ASF converters, MP3 players, and digital video capture applications.

What is MPEG-1 Audio Layer 3 (MP3)? 
MPEG-1 Audio Layer 3 is a file format that uses lossy compression to compress audio information. Lossy compression is a technique in which decompressed data may be different from the data initially compressed, but similar enough to be parsed and represented. It is common in audio applications such as streaming media.

What might an attacker use the vulnerability to do? 
If a user is logged on with administrative user rights, an attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

How could an attacker exploit the vulnerability? 
This vulnerability requires that a user open a specially crafted media file or receive specially crafted streaming content from a Web site or any application that delivers Web content.

In a Web-based attack scenario, an attacker would have to host a Web site that contains specially crafted content that is used to attempt to exploit this vulnerability. In addition, compromised Web sites and Web sites that accept or host user-provided content could contain specially crafted content that could exploit this vulnerability. An attacker would have no way to force users to visit a specially crafted Web site. Instead, an attacker would have to convince them to visit the Web site, typically by getting them to click a link in an e-mail message or Instant Messenger message that takes them to the attacker's site.

In an e-mail attack scenario, an attacker could exploit the vulnerability by sending a media file with a specially crafted media file embedded in it to the user and by convincing the user to open the file.

What systems are primarily at risk from the vulnerability? 
Workstations and terminal servers are primarily at risk. Servers could be at more risk if users who should not have sufficient administrative permissions are given the ability to log on to servers and to run programs. However, best practices strongly discourage allowing this.

What does the update do? 
The update addresses the issue by correcting the way that the Microsoft MPEG Layer-3 audio codecs handle the MPEG Layer-3 audio stream in specially crafted media files.

When this security bulletin was issued, had this vulnerability been publicly disclosed? 
No. Microsoft received information about this vulnerability through coordinated vulnerability disclosure.

When this security bulletin was issued, had Microsoft received any reports that this vulnerability was being exploited? 
No. Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers when this security bulletin was originally issued.

Update Information

Detection and Deployment Tools and Guidance

Manage the software and security updates you need to deploy to the servers, desktop, and mobile systems in your organization. For more information see the TechNet Update Management Center. The Microsoft TechNet Security Web site provides additional information about security in Microsoft products.

Security updates are available from Microsoft Update and Windows Update. Security updates are also available from the Microsoft Download Center. You can find them most easily by doing a keyword search for "security update."

Finally, security updates can be downloaded from the Microsoft Update Catalog. The Microsoft Update Catalog provides a searchable catalog of content made available through Windows Update and Microsoft Update, including security updates, drivers and service packs. By searching using the security bulletin number (such as, "MS07-036"), you can add all of the applicable updates to your basket (including different languages for an update), and download to the folder of your choosing. For more information about the Microsoft Update Catalog, see the Microsoft Update Catalog FAQ.

Note Microsoft discontinued support for Office Update and the Office Update Inventory Tool as of August 1, 2009. To continue getting the latest updates for Microsoft Office products, use Microsoft Update. For more information, see About Microsoft Office Update: Frequently Asked Questions.

Detection and Deployment Guidance

Microsoft provides detection and deployment guidance for security updates. This guidance contains recommendations and information that can help IT professionals understand how to use various tools for detection and deployment of security updates. For more information, see Microsoft Knowledge Base Article 961747.

Microsoft Baseline Security Analyzer

Microsoft Baseline Security Analyzer (MBSA) allows administrators to scan local and remote systems for missing security updates as well as common security misconfigurations. For more information about MBSA, visit Microsoft Baseline Security Analyzer.

The following table provides the MBSA detection summary for this security update.

The latest version of MBSA has been released: Microsoft Baseline Security Analyzer 2.1.1. For more information, see Microsoft Baseline Security Analyzer 2.1.

Windows Server Update Services

Windows Server Update Services (WSUS) enables information technology administrators to deploy the latest Microsoft product updates to computers that are running the Windows operating system. For more information about how to deploy this security update using Windows Server Update Services, see the TechNet article, Windows Server Update Services.

Systems Management Server

The following table provides the SMS detection and deployment summary for this security update.

For SMS 2.0 and SMS 2003, the Security Update Inventory Tool (SUIT) can be used by SMS to detect security updates. See also Downloads for Systems Management Server 2.0.

For SMS 2003, the SMS 2003 Inventory Tool for Microsoft Updates (ITMU) can be used by SMS to detect security updates that are offered by Microsoft Update and that are supported by Windows Server Update Services. For more information about the SMS 2003 ITMU, see SMS 2003 Inventory Tool for Microsoft Updates. For more information about SMS scanning tools, see SMS 2003 Software Update Scanning Tools. See also Downloads for Systems Management Server 2003.

System Center Configuration Manager 2007 uses WSUS 3.0 for detection of updates. For more information about Configuration Manager 2007 Software Update Management, visit System Center Configuration Manager 2007.

For more information about SMS, visit the SMS Web site.

For more detailed information, see Microsoft Knowledge Base Article 910723: Summary list of monthly detection and deployment guidance articles.

Update Compatibility Evaluator and Application Compatibility Toolkit

Updates often write to the same files and registry settings required for your applications to run. This can trigger incompatibilities and increase the time it takes to deploy security updates. You can streamline testing and validating Windows updates against installed applications with the Update Compatibility Evaluator components included with Application Compatibility Toolkit.

The Application Compatibility Toolkit (ACT) contains the necessary tools and documentation to evaluate and mitigate application compatibility issues before deploying Microsoft Windows Vista, a Windows Update, a Microsoft Security Update, or a new version of Windows Internet Explorer in your environment.

Security Update Deployment

Affected Software

For information about the specific security update for your affected software, click the appropriate link:

Windows XP (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Note For supported versions of Windows XP Professional x64 Edition, this security update is the same as supported versions of the Windows Server 2003 x64 Edition security update.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

If you have previously installed a hotfix to update one of these files, the installer copies the RTMQFE, SP1QFE, or SP2QFE files to your system. Otherwise, the installer copies the RTMGDR, SP1GDR, or SP2GDR files to your system. Security updates may not contain all variations of these files. For more information about this behavior, see Microsoft Knowledge Base Article 824994.

For more information about the installer, visit the Microsoft TechNet Web site.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

This security update supports the following setup switches.

Note You can combine these switches into one command. For backward compatibility, the security update also supports the setup switches that the earlier version of the Setup program uses. For more information about the supported installation switches, see Microsoft Knowledge Base Article 262841.

Removing the Update

This security update supports the following setup switches.

Verifying That the Update Has Been Applied

• Microsoft Baseline Security Analyzer

  To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.

• File Version Verification

  Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.

  1. Click Start, and then click Search.
  2. In the Search Results pane, click All files and folders under Search Companion.
  3. In the All or part of the file name box, type a file name from the appropriate file information table, and then click Search.
  4. In the list of files, right-click a file name from the appropriate file information table, and then click Properties.
     Note Depending on the edition of the operating system, or the programs that are installed on your system, some of the files that are listed in the file information table may not be installed.
  5. On the Version tab, determine the version of the file that is installed on your system by comparing it to the version that is documented in the appropriate file information table.
     Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.

• Registry Key Verification

  You may also be able to verify the files that this security update has installed by reviewing the registry keys listed in the Reference Table in this section.

  These registry keys may not contain a complete list of installed files. Also, these registry keys may not be created correctly when an administrator or an OEM integrates or slipstreams this security update into the Windows installation source files.

Windows Server 2003 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Deployment Information

Installing the Update

When you install this security update, the installer checks to see if one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

If you have previously installed a hotfix to update one of these files, the installer copies the RTMQFE, SP1QFE, or SP2QFE files to your system. Otherwise, the installer copies the RTMGDR, SP1GDR, or SP2GDR files to your system. Security updates may not contain all variations of these files. For more information about this behavior, see Microsoft Knowledge Base Article 824994.

For more information about the installer, visit the Microsoft TechNet Web site.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

This security update supports the following setup switches.

Note You can combine these switches into one command. For backward compatibility, the security update also supports many of the setup switches that the earlier version of the Setup program uses. For more information about the supported installation switches, see Microsoft Knowledge Base Article 262841.

Removing the Update

This security update supports the following setup switches.

Verifying that the Update Has Been Applied

• Microsoft Baseline Security Analyzer

  To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.

• File Version Verification

  Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.

  1. Click Start, and then click Search.
  2. In the Search Results pane, click All files and folders under Search Companion.
  3. In the All or part of the file name box, type a file name from the appropriate file information table, and then click Search.
  4. In the list of files, right-click a file name from the appropriate file information table, and then click Properties.
     Note Depending on the edition of the operating system, or the programs that are installed on your system, some of the files that are listed in the file information table may not be installed.
  5. On the Version tab, determine the version of the file that is installed on your system by comparing it to the version that is documented in the appropriate file information table.
     Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.

• Registry Key Verification

  You may also be able to verify the files that this security update has installed by reviewing the registry keys listed in the Reference Table in this section.

  These registry keys may not contain a complete list of installed files. Also, these registry keys may not be created correctly when an administrator or an OEM integrates or slipstreams this security update into the Windows installation source files.

Other Information

Acknowledgments

Microsoft thanks the following for working with us to help protect customers:

• Moritz Jodeit of n.runs AG, working with TippingPoint's Zero Day Initiative, for reporting the MPEG Layer-3 Audio Decoder Buffer Overflow Vulnerability (CVE-2010-1882)

Microsoft Active Protections Program (MAPP)

To improve security protections for customers, Microsoft provides vulnerability information to major security software providers in advance of each monthly security update release. Security software providers can then use this vulnerability information to provide updated protections to customers via their security software or devices, such as antivirus, network-based intrusion detection systems, or host-based intrusion prevention systems. To determine whether active protections are available from security software providers, please visit the active protections Web sites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.

Support

• Customers in the U.S. and Canada can receive technical support from Security Support or 1-866-PCSAFETY. There is no charge for support calls that are associated with security updates. For more information about available support options, see Microsoft Help and Support.
• International customers can receive support from their local Microsoft subsidiaries. There is no charge for support that is associated with security updates. For more information about how to contact Microsoft for support issues, visit the International Support Web site.

Disclaimer

The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

Revisions

• V1.0 (August 10, 2010): Bulletin published.

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