Microsoft Security Bulletin MS09-052 - Critical

Vulnerability in Windows Media Player Could Allow Remote Code Execution (974112)

Published: Tuesday, October 13, 2009 | Updated: Tuesday, January 12, 2010

Version: 1.2

General Information

Executive Summary

This security update resolves a privately reported vulnerability in Windows Media Player. The vulnerability could allow remote code execution if a specially crafted ASF file is played using Microsoft Windows Media Player 6.4. 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 Microsoft Windows Media Player 6.4 when installed on all supported editions of Microsoft Windows 2000, Windows XP, and Windows Server 2003. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerability by correcting the manner in which Windows Media Player 6.4 handles specially crafted ASF 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

Operating System	Component	Maximum Security Impact	Aggregate Severity Rating	Bulletins Replaced by this Update
Microsoft Windows 2000 Service Pack 4	Microsoft Windows Media Player 6.4	Remote Code Execution	Critical	None
Windows XP Service Pack 2 and Windows XP Service Pack 3	Microsoft Windows Media Player 6.4	Remote Code Execution	Critical	MS08-076
Windows XP Professional x64 Edition Service Pack 2	Microsoft Windows Media Player 6.4	Remote Code Execution	Critical	MS08-076
Windows Server 2003 Service Pack 2	Microsoft Windows Media Player 6.4	Remote Code Execution	Critical	MS08-076
Windows Server 2003 x64 Edition Service Pack 2	Microsoft Windows Media Player 6.4	Remote Code Execution	Critical	MS08-076

Non-Affected Software

Operating System	Component
Windows Server 2003 with SP2 for Itanium-based Systems	Not applicable
Windows Vista, Windows Vista Service Pack 1, and Windows Vista Service Pack 2	Not applicable
Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and Windows Vista x64 Edition Service Pack 2	Not applicable
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2	Not applicable
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2	Not applicable
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2	Not applicable
Windows 7 for 32-bit Systems	Not applicable
Windows 7 for x64-based Systems	Not applicable
Windows Server 2008 R2 for x64-based Systems	Not applicable
Windows Server 2008 R2 for Itanium-based Systems	Not applicable

Frequently Asked Questions (FAQ) Related to This Security Update

I do not have Windows Media Player 6.4 on my system. Why am I being offered this update?
After upgrading from Microsoft Windows Media Player 6.4 to a later version of Windows Media Player, certain components related to Microsoft Windows Media Player 6.4 are not completely removed from the system in order to ensure backwards compatibility. These components are updated by this bulletin. Although later versions of Windows Media Player are not affected by this vulnerability, a user may still be vulnerable if a program explicitly calls these older components when playing media. If you do not have this update applied after upgrading from Microsoft Windows Media Player 6.4, automated scanning tools such as MBSA will detect that your system is vulnerable even though Microsoft Windows Media Player 6.4 is not the default media player on the system. Microsoft Windows Media Player 6.4 is the only version of Windows Media Player affected by the issue addressed in this bulletin, however all customers who are automatically offered the update should apply it to ensure that they are protected from this vulnerability.

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.

How does this bulletin relate to MS09-051, Vulnerability in Windows Media Runtime Could Allow Remote Code Execution?
This bulletin is not related to MS09-051, Vulnerability in Windows Media Runtime Could Allow Remote Code Execution. Users should install both updates to ensure they are fully protected.

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. To determine the support life cycle for your software release, visit Microsoft Support Lifecycle.

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. For more information about the Windows Product Lifecycle, visit Microsoft Support Lifecycle. For more information about the extended security update support period for these software versions or editions, visit Microsoft Product Support Services.

Customers who require custom support for older releases 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 Microsoft Worldwide Information, select the country, 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 Windows Operating System Product Support Lifecycle FAQ.

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected Software	WMP Heap Overflow Vulnerability - CVE-2009-2527	Aggregate Severity Rating
Microsoft Windows Media Player 6.4 on Microsoft Windows 2000 Service Pack 4	Critical Remote Code Execution	Critical
Microsoft Windows Media Player 6.4 on Windows XP Service Pack 2 and Windows XP Service Pack 3	Critical Remote Code Execution	Critical
Microsoft Windows Media Player 6.4 on Windows XP Professional x64 Edition Service Pack 2	Critical Remote Code Execution	Critical
Microsoft Windows Media Player 6.4 on Windows Server 2003 Service Pack 2	Critical Remote Code Execution	Critical
Microsoft Windows Media Player 6.4 on Windows Server 2003 x64 Edition Service Pack 2	Critical Remote Code Execution	Critical

WMP Heap Overflow Vulnerability - CVE-2009-2527

A remote code execution vulnerability exists in Windows Media Player 6.4. An attacker could exploit the vulnerability by constructing a specially crafted ASF file that could allow remote code execution when played using Windows Media Player 6.4. An attacker who successfully exploited this vulnerability could take complete control of an affected system.

To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2009-2527.

Mitigating Factors for WMP Heap Overflow Vulnerability - CVE-2009-2527

Workarounds for WMP Heap Overflow Vulnerability - CVE-2009-2527

FAQ for WMP Heap Overflow Vulnerability - CVE-2009-2527

What is the scope of the vulnerability?
This is a remote code execution vulnerability. 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.

What causes the vulnerability?
Windows Media Player 6.4 incorrectly handles specially crafted ASF files.

What is Advanced Systems Format (ASF)?
ASF 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 can contain streaming audio, video, slide shows, and synchronized events. ASF enables content to be delivered to you as a continuous flow of data. ASF files may have the file extensions ASF, WMV, or WMA.

What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability could run arbitrary code. 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?
Exploitation of this vulnerability requires that a user open a specially crafted ASF file or receive specially crafted streaming content from a Web site or any application that delivers Web content.

If a malicious ASF file is hosted on a computer with the affected software, simply browsing to the folder in Windows Explorer will parse the file far enough to trigger the vulnerability.

What systems are primarily at risk from the vulnerability?
Any system using Windows Media Player 6.4, such as workstations or terminal servers, is at risk from this vulnerability.

What does the update do?
The update addresses the vulnerability by correcting the manner in which Windows Media Player 6.4 handles specially crafted ASF files.

When this security bulletin was issued, had this vulnerability been publicly disclosed?
No. Microsoft received information about this vulnerability through responsible 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 and had not seen any examples of proof of concept code published 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.

Software	MBSA 2.1
Microsoft Windows 2000 Service Pack 4	Yes
Windows XP Service Pack 2 and Windows XP Service Pack 3	Yes
Windows XP Professional x64 Edition Service Pack 2	Yes
Windows Server 2003 Service Pack 2	Yes
Windows Server 2003 x64 Edition Service Pack 2	Yes

For more information about MBSA 2.1, see MBSA 2.1 Frequently Asked Questions.

Windows Server Update Services

By using Windows Server Update Services (WSUS), administrators can deploy the latest critical updates and security updates for Windows 2000 operating systems and later, Office XP and later, Exchange Server 2003, and SQL Server 2000. For more information about how to deploy this security update using Windows Server Update Services, visit the Windows Server Update Services Web site.

Systems Management Server

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

Software	SMS 2.0	SMS 2003 with SUIT	SMS 2003 with ITMU	Configuration Manager 2007
Microsoft Windows 2000 Service Pack 4	Yes	Yes	Yes	Yes
Windows XP Service Pack 2 and Windows XP Service Pack 3	Yes	Yes	Yes	Yes
Windows XP Professional x64 Edition Service Pack 2	No	No	Yes	Yes
Windows Server 2003 Service Pack 2	Yes	Yes	Yes	Yes
Windows Server 2003 x64 Edition Service Pack 2	No	No	Yes	Yes

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


Inclusion in Future Service Packs	The update for this issue may be included in a future update rollup
Deployment
Installing without user intervention	WindowsMedia64-KB974112-x86-ENU /quiet
Installing without restarting	WindowsMedia64-KB974112-x86-ENU /norestart
Update log file	KB974112.log
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. To help reduce the chance that a restart will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart, see Microsoft Knowledge Base Article 887012.
HotPatching	Not applicable
Removal Information	Use Add or Remove Programs tool in Control Panel or the Spuninst.exe utility located in the %Windir%\$NTUninstallKB974112_WM41$\Spuninst folder
File Information	See Microsoft Knowledge Base Article 974112
Registry Key Verification	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Media Player 6.4\SP0\KB974112_WM41\Filelist HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Media Player 6.4\KB974112_WM41

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/passive	Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet	Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]	Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Special Options
/overwriteoem	Overwrites OEM files without prompting.
/nobackup	Does not back up files needed for uninstall.
/forceappsclose	Forces other programs to close when the computer shuts down.
/log:path	Allows the redirection of installation log files.
/extract[:path]	Extracts files without starting the Setup program.
/ER	Enables extended error reporting.
/verbose	Enables verbose logging. During installation, creates %Windir%\CabBuild.log. This log details the files that are copied. Using this switch may cause the installation to proceed more slowly.

Supported Spuninst.exe Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/passive	Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet	Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]	Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Special Options
/forceappsclose	Forces other programs to close when the computer shuts down.
/log:path	Allows the redirection of installation log files.


Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For Windows XP Service Pack 2 and Windows XP Service Pack 3: WindowsXP-KB974112-x86-enu /quiet
	For Windows XP Professional x64 Edition Service Pack 2: WindowsServer2003.WindowsXP-KB974112-x64-enu /quiet
Installing without restarting	For Windows XP Service Pack 2 and Windows XP Service Pack 3: WindowsXP-KB974112-x86-enu /norestart
	For Windows XP Professional x64 Edition Service Pack 2: WindowsServer2003.WindowsXP-KB974112-x64-enu /norestart
Update log file	KB974112.log
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. To help reduce the chance that a restart will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart, see Microsoft Knowledge Base Article 887012.
HotPatching	Not applicable
Removal Information	Use Add or Remove Programs tool in Control Panel or the Spuninst.exe utility located in the %Windir%\$NTUninstallKB974112$\Spuninst folder
File Information	See Microsoft Knowledge Base Article 974112
Registry Key Verification	For all supported 32-bit editions of Windows XP: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP\SP4\KB974112\Filelist
	For all supported x64-based editions of Windows XP: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP Version 2003\SP3\KB974112\Filelist

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/passive	Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet	Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]	Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Special Options
/overwriteoem	Overwrites OEM files without prompting.
/nobackup	Does not back up files needed for uninstall.
/forceappsclose	Forces other programs to close when the computer shuts down.
/log:path	Allows the redirection of installation log files.
/integrate:path	Integrates the update into the Windows source files. These files are located at the path that is specified in the switch.
/extract[:path]	Extracts files without starting the Setup program.
/ER	Enables extended error reporting.
/verbose	Enables verbose logging. During installation, creates %Windir%\CabBuild.log. This log details the files that are copied. Using this switch may cause the installation to proceed more slowly.

Supported Spuninst.exe Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/passive	Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet	Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart	Does not restart when installation has completed
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]	Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Special Options
/forceappsclose	Forces other programs to close when the computer shuts down.
/log:path	Allows the redirection of installation log files.


Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For all supported 32-bit editions of Windows Server 2003: WindowsServer2003-KB974112-x86-enu /quiet
	For all supported x64-based editions of Windows Server 2003: WindowsServer2003.WindowsXP-KB974112-x64-enu /quiet
Installing without restarting	For all supported 32-bit editions of Windows Server 2003: WindowsServer2003-KB974112-x86-enu /norestart
	For all supported x64-based editions of Windows Server 2003: WindowsServer2003.WindowsXP-KB974112-x64-enu /norestart
Update log file	KB974112.log
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. To help reduce the chance that a restart will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart, see Microsoft Knowledge Base Article 887012.
HotPatching	This security update does not support HotPatching. For more information about HotPatching, see Microsoft Knowledge Base Article 897341.
Removal Information	Use Add or Remove Programs tool in Control Panel or the Spuninst.exe utility located in the %Windir%\$NTUninstallKB974112$\Spuninst folder
File Information	See Microsoft Knowledge Base Article 974112
Registry Key Verification	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Server 2003\SP3\KB974112\Filelist

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/passive	Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet	Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]	Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Special Options
/overwriteoem	Overwrites OEM files without prompting.
/nobackup	Does not back up files needed for uninstall.
/forceappsclose	Forces other programs to close when the computer shuts down.
/log:path	Allows the redirection of installation log files.
/integrate:path	Integrates the update into the Windows source files. These files are located at the path that is specified in the switch.
/extract[:path]	Extracts files without starting the Setup program.
/ER	Enables extended error reporting.
/verbose	Enables verbose logging. During installation, creates %Windir%\CabBuild.log. This log details the files that are copied. Using this switch may cause the installation to proceed more slowly.

Supported Spuninst.exe Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/passive	Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet	Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]	Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Special Options
/forceappsclose	Forces other programs to close when the computer shuts down.
/log:path	Allows the redirection of installation log files.

Other Information

Acknowledgments

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

Yamata Li of Palo Alto Networks for reporting the WMP Heap Overflow Vulnerability (CVE-2009-2527)

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 (October 13, 2009): Bulletin published.
V1.1 (October 29, 2009): Removed a workaround. Also added an entry in the section, Frequently Asked Questions (FAQ) Related to This Security Update, to clarify why some customers without Windows Media Player 6.4 on their systems may be offered this update.
V1.2 (January 12, 2010): Corrected registry keys for Windows Media Player 6.4 on Microsoft Windows 2000 Service Pack 4. This is an informational update only.

Microsoft Security Bulletin MS09-052 - Critical

Vulnerability in Windows Media Player Could Allow Remote Code Execution (974112)

General Information

Executive Summary

Affected and Non-Affected Software

Frequently Asked Questions (FAQ) Related to This Security Update

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

WMP Heap Overflow Vulnerability - CVE-2009-2527

Mitigating Factors for WMP Heap Overflow Vulnerability - CVE-2009-2527

Workarounds for WMP Heap Overflow Vulnerability - CVE-2009-2527

FAQ for WMP Heap Overflow Vulnerability - CVE-2009-2527

Update Information

Detection and Deployment Tools and Guidance

Security Update Deployment

Windows 2000 (all editions)

Deployment Information

Windows XP (all editions)

Deployment Information

Windows Server 2003 (all editions)

Deployment Information

Other Information

Acknowledgments

Microsoft Active Protections Program (MAPP)

Support

Disclaimer

Revisions