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Microsoft Security Bulletin MS06-005 - Critical

Vulnerability in Windows Media Player Could Allow Remote Code Execution (911565)

Published: February 14, 2006 | Updated: May 25, 2006

Version: 2.1

Summary

Who should read this document: Customers who use Microsoft Windows Media Player

Impact of Vulnerability: Remote Code Execution

Maximum Severity Rating: Critical

Recommendation: Customers should apply the update immediately.

Security Update Replacement: This bulletin replaces a prior security update. See the frequently asked questions (FAQ) section of this bulletin for the complete list.

Caveats: None.

Tested Software and Security Update Download Locations:

Affected Software:

  • Windows Media Player for XP on Microsoft Windows XP Service Pack 1 – Download the update
  • Windows Media Player 9 on Microsoft Windows XP Service Pack 2 – Download the update
  • Windows Media Player 9 on Microsoft Windows Server 2003 – Download the update
  • Microsoft Windows 98, Microsoft Windows 98 Second Edition (SE), and Microsoft Windows Millennium Edition (ME) – Review the FAQ section of this bulletin for details about these operating systems.

Tested Microsoft Windows Components:

Affected Components:

  • Microsoft Windows Media Player 7.1 when installed on Windows 2000 Service Pack 4 – Download the update
  • Microsoft Windows Media Player 9 when installed on Windows 2000 Service Pack 4 or Windows XP Service Pack 1 – Download the update
  • Microsoft Windows Media Player 10 when installed on Windows XP Service Pack 1 or Windows XP Service Pack 2 – Download the update
  • Non-Affected Software:
    • Windows Media Player 6.4 on all Microsoft Windows operating systems
    • Windows Media Player 10 on Microsoft Windows Server 2003 Service Pack 1
    • Microsoft Windows XP Professional x64 Edition
    • Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft Windows Server 2003 with SP1 for Itanium-based Systems
    • Microsoft Windows Server 2003 x64 Edition

    Note The “Affected Software” section applies to Windows Media Player that shipped with a Microsoft Windows operating system. The “Affected Components” section applies to Windows Media Player that was downloaded and installed onto a Microsoft Windows operating system.

    Note The security updates for Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1 also apply to Microsoft Windows Server 2003 R2 severity.

    The software in this list has been tested to determine whether the versions are affected. Other versions either no longer include security update support or may not be affected. To determine the support life cycle for your product and version, visit the Microsoft Support Lifecycle Web site.

General Information

Executive Summary:

This update resolves a newly-discovered, privately-reported vulnerability. The vulnerability is documented in the "Vulnerability Details" section of this bulletin.

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 affected than users who operate with administrative user rights.

We recommend that customers apply the update immediately.

Severity Ratings and Vulnerability Identifiers:

Vulnerability IdentifiersImpact of VulnerabilityMicrosoft Windows Media Player 7.1 when installed on Windows 2000 Service Pack 4Microsoft Windows Media Player for XP on Microsoft Windows XP Service Pack 1Microsoft Windows Media Player 9 when installed on Windows 98 SE, ME, Windows 2000 Service Pack 4, Windows XP Service Pack 1Windows Media Player 9 on Microsoft Windows XP Service Pack 2 or Windows Server 2003Microsoft Windows Media Player 10 when installed on Windows XP Service Pack 1 or Windows XP Service Pack 2
Windows Media Player Vulnerability CVE-2006-0006Remote Code ExecutionImportantImportantCriticalCriticalCritical

This assessment is based on the types of systems that are affected by the vulnerability, their typical deployment patterns, and the effect that exploiting the vulnerability would have on them.

Note The severity ratings for non-x86 operating system versions map to the x86 operating systems versions as follows:

  • The Microsoft Windows Server 2003 R2 Systems severity rating is the same as the Windows Server 2003 severity.

Why did Microsoft reissue this bulletin on April 11, 2006?
Microsoft updated this bulletin today to advise customers that revised versions of the security update are available for Microsoft Windows Media Player 10 when installed on Windows XP Service Pack 1 or Windows XP Service Pack 2, listed in the “Affected Components” section. For more information, see on “What are the known issues that customers may experience when they install this security update?”

What updates does this release replace?
This security update replaces a prior security update. The security bulletin ID and affected operating systems are listed in the following table.

Bulletin IDWindows 98, 98 SE, MEWindows 2000 Service Pack 4 Windows XP Service Pack 1 and Service Pack 2Windows Server 2003
KB 885492 of MS05-009ReplacedReplacedReplacedReplaced

I’ve installed the Windows Media Player (KB911565) security update. What version of Wmp.dll or Wmpui.dll should I have installed?
Please refer to the chart to determine what file version of Wmp.dll or Wmpui.dll you should have installed.

Windows Operating System:File NameFile Version
Windows 2000 Service Pack 4 Windows Media Player 7.1Wmpui.dll7.10.0.3077
Windows 2000 Service Pack 4 Windows Media Player 9Wmp.dll9.0.0.3344
Windows XP Service Pack 1 Windows Media Player for XPWmpui.dll8.0.0.4495
Windows XP Service Pack 1 Windows Media Player 9Wmp.dll9.0.0.3344
Windows XP Service Pack 1 Windows Media Player 10Wmp.dll10.0.0.4019
Windows XP Service Pack 2 Windows Media Player 9Wmp.dll9.0.0.3344
Windows XP Service Pack 2 Windows Media Player 10Wmp.dll10.0.0.4019
Windows Server 2003 Windows Media Player 9Wmp.dll9.0.0.3344

How does the extended support for Windows 98, Windows 98 Second Edition, and Windows Millennium Edition affect the release of security updates for these operating systems?
Microsoft will only release security updates for critical security issues. Updates for non-critical security issues are not offered during this support period. For more information about the Microsoft Support Lifecycle policies for these operating systems, visit the following Web site.

For more information about severity ratings, visit the following Web site.

Critical security updates for this platform are available and are provided as part of this security bulletin and can be downloaded only from the Windows Update Web site. For more information about severity ratings, visit the following Web site.

Extended security update support for Microsoft Windows NT Workstation 4.0 Service Pack 6a and Windows 2000 Service Pack 2 ended on June 30, 2004. Extended security update support for Microsoft Windows NT Server 4.0 Service Pack 6a ended on December 31, 2004. Extended security update support for Microsoft Windows 2000 Service Pack 3 ended on June 30, 2005. I am still using one of these operating systems. What should I do?
Windows NT Workstation 4.0 Service Pack 6a, Windows NT Server 4.0 Service Pack 6a, Windows 2000 Service Pack 2, and Windows 2000 Service Pack 3 have reached the end of their life cycles. It should be a priority for customers who have these operating system versions to migrate to supported versions to prevent potential exposure to vulnerabilities. For more information about the Windows Product Lifecycle, visit the following Microsoft Support Lifecycle Web site. For more information about the extended security update support period for these operating system versions, visit the Microsoft Product Support Services Web site.

Customers who require custom support for these products 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, 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.

Can I use the Microsoft Baseline Security Analyzer (MBSA) 1.2.1 to determine whether this update is required?
Yes. MBSA 1.2.1 will determine whether this update is required for Windows Media Player 7.1, Windows Media Player 8, and Windows Media Player 9. For more information about MBSA, visit the MBSA Web site.

MBSA 1.2.1 does not support the detection of Windows Media Player 10. For more information about MBSA, visit the MBSA Web site. For more information about the programs that MBSA 1.2.1 currently does not detect, see Microsoft Knowledge Base Article 306460. However, Microsoft has developed a version of the Enterprise Update Scan Tool (EST) that will help customers determine whether the security updates provided in this security bulletin are required. For more information, see the FAQ, "Can I use a version of the Enterprise Update Scan Tool (EST) to determine whether this update is required?" below.

Can I use the Microsoft Baseline Security Analyzer (MBSA) 2.0 to determine whether this update is required?
Yes. MBSA 2.0 will determine whether this update is required. MBSA 2.0 can detect security updates for products that Microsoft Update supports. For more information about MBSA, visit the MBSA Web site.

What is the Enterprise Update Scan Tool (EST)?
As part of an ongoing commitment to provide detection tools for bulletin-class security updates, Microsoft delivers a stand-alone detection tool whenever the Microsoft Baseline Security Analyzer (MBSA) and the Office Detection Tool (ODT) cannot detect whether the update is required for an MSRC release cycle. This stand-alone tool is called the Enterprise Update Scan Tool (EST) and is designed for enterprise administrators. When a version of the Enterprise Update Scan Tool is created for a specific bulletin, customers can run the tool from a command line interface (CLI) and view the results of the XML output file. To help customers better utilize the tool, detailed documentation will be provided with the tool. There is also a version of the tool that offers an integrated experience for SMS administrators.

Can I use a version of the Enterprise Update Scan Tool (EST) to determine whether this update is required?
Yes. Microsoft has created a version of the EST that will determine if you have to apply this update. For download links and more information about the version of the EST that is being released this month, see the following Microsoft Web site. SMS customers should review the "Can I use Systems Management Server (SMS) to determine whether this update is required? " FAQ for more information about SMS and EST.

Can I use Systems Management Server (SMS) to determine whether this update is required?
Yes. SMS can help detect and deploy this security update. For information about SMS, visit the SMS Web site.

The Security Update Inventory Tool can be used by SMS for detecting security updates that are offered by Windows Update, that are supported by Software Update Services, and other security updates that are supported by MBSA 1.2.1. For more information about the Security Update Inventory Tool, see the following Microsoft Web site. For more information about the limitations of the Security Update Inventory Tool, see Microsoft Knowledge Base Article 306460.

The SMS 2003 Inventory Tool for Microsoft Updates can be used by SMS for detecting security updates that are offered by Microsoft Update and that are supported by Windows Server Update Services. For more information about the SMS 2003 Inventory Tool for Microsoft Updates, see the following Microsoft Web site.

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

Windows Media Player Vulnerability - CVE-2006-0006

A remote code execution vulnerability exists in Windows Media Player because of the way that it handles processing bitmap files. An attacker could exploit the vulnerability by constructing a malicious bitmap file (.bmp) that could potentially allow remote code execution if a user visited a malicious Web site or viewed a malicious e-mail message. An attacker who successfully exploited this vulnerability could take complete control of an affected system. However, significant user interaction is required to exploit this vulnerability.

Mitigating Factors for Windows Media Player Vulnerability - CVE-2006-0006:

  • Windows Media Player is not the default handler for .bmp files.
  • When using Microsoft Windows 2000 Service Pack 4 with Windows Media Player 7.1 or Windows XP Service Pack 1 with Windows Media Player 8, users are not vulnerable in a Web-based attack. Users are still vulnerable if a user downloads and installs a malicious Windows Media Player Skin.
  • In a Web-based attack scenario, an attacker would have to host a Web site that contains a Web page that is used to attempt to exploit this vulnerability. An attacker would have no way to force users to visit a malicious Web site. Instead, an attacker would have to persuade them to visit the Web site, typically by getting them to click a link that takes them to the attacker's site. It could also be possible to display malicious Web content by using banner advertisements or by using other methods to deliver Web content to affected systems.
  • In an e-mail attack scenario, an attacker could exploit the vulnerability by sending a specially-crafted file to the user and by persuading the user to open the file. Windows Media Player is not the default handler for .bmp files. In order for the exploit to take place, the user would have to save the .bmp file to the desktop and open it using Windows Media Player.
  • 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 affected than users who operate with administrative user rights.

Workarounds for Windows Media Player Vulnerability - CVE-2006-0006:

Microsoft has tested the following workarounds. While these workarounds will not correct the underlying vulnerability, they help block known attack vectors. When a workaround reduces functionality, it is identified in the following section.

Note The following steps require Administrator privileges. We recommend that you restart the computer after you apply this workaround. Alternatively, you can log out and log back in after you apply the workaround. However, we do recommend that you restart the computer.

  • Back up and remove the WMZ registry key
    Removing the WMZ registry key helps protect the affected system from attempts to exploit this vulnerability. To backup and remove the WMZ registry key, follow these steps:

    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.

    Note We recommend backing up the registry before you edit it.

    1. Click Start, click Run, type “regedit" (without the quotation marks), and then click OK.
    2. Expand HKEY_CLASSES_ROOT, and then click .WMZ.
    3. Click File, and then click Export.
    4. In the Export Registry File dialog box, type a file name in the File Name box, and then click Save.
    5. Click Edit, then click Delete to remove the registry key.
    6. In the Confirm Key Delete dialog box, you receive a “Are you sure you want to delete this key and all of its subkeys” message. Click Yes.

Note Removing the skin file association needs to be done in addition to at least one of the workarounds listed below.

Impact of Workaround: This workaround disables the Media Player skin file association but does not prevent users from applying alternate skins that are already present in their default skins directory (%Programfiles%\Windows Media Player\skins).

  • Modify the Access Control List on the DirectX “Filter Graph no thread” registry key
    Modifying the Access Control List on the “Filter Graph no thread” registry key helps protect the affected system from attempts to exploit this vulnerability. To modify the Filter Graph no Thread Splitter registry key, follow these steps.

    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.

    Note We recommend backing up the registry before you edit it.

    For Windows 2000

    Note Make a note of the permissions that are listed in the dialog box so that you can restore them to their original values at a later time

    1. Click Start, click Run, type "regedt32" (without the quotation marks), and then click OK.
    2. Expand HKEY_CLASSES_ROOT, expand CLSID, and then click { E436EBB8-524F-11CE-9F53-0020AF0BA770}.
    3. Click Security, and then click Permissions.
    4. Click to clear the Allow Inheritable Permissions from the parent to propagate to this object check box. You are prompted to click Copy, Remove, or Cancel. Click Remove, and then click OK.
    5. You receive a message that states that no one will be able to access this registry key. Click Yes when you are prompted to do so.

    For Windows XP Service Pack 1 or later operating systems

    Note Make a note of the permissions that are listed in the dialog box so that you can restore them to their original values at a later time

    1. Click Start, click Run, type "regedit" (without the quotation marks), and then click OK.
    2. Expand HKEY_CLASSES_ROOT, expand CLSID, and then click{ E436EBB8-524F-11CE-9F53-0020AF0BA770}.
    3. Click Edit, and then click Permissions.
    4. Click Advanced.
    5. Click to clear the Inherit from parent the permission entries that apply to child objects. Include these with entries explicitly defined here. check box. You are prompted to click Copy, Remove, or Cancel. Click Remove, and then check OK.
    6. You receive a message that states that no one will be able to access this registry key. Click Yes, and then click OK to close the Permissions for { E436EBB8-524F-11CE-9F53-0020AF0BA770} dialog box.

Note If you have backed up and removed the DirectX “Filter Graph no thread” registry key, you do not need to modify the Access Control List on the DirectX “Filter Graph no thread” registry key.

Impact of Workaround: This workaround disables image rendering and audio and video playback in any number of DirectX-enabled applications.

  • Backup and remove the DirectX “Filter Graph no thread” registry key
    Removing the “Filter Graph no thread” registry key helps protect the affected system from attempts to exploit this vulnerability. To backup and remove the “Filter Graph no thread” registry key, follow these steps:

    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.

    Note We recommend backing up the registry before you edit it.

    1. Click Start, click Run, type “regedit" (without the quotation marks), and then click OK.
    2. Expand HKEY_CLASSES_ROOT, expand CLSID, and then click {E436EBB8-524F-11CE-9F53-0020AF0BA770}.
    3. Click File, and then click Export.
    4. In the Export Registry File dialog box, type a file name in the File Name box, and then click Save.
    5. Click Edit, and then click Delete to remove the registry key.
    6. In the Confirm Key Delete dialog box, you receive a “Are you sure you want to delete this key and all of its subkeys” message. Click Yes.

Note If you have backed up and remove the “DirectX “Filter Graph no thread” registry key, you do not need to modify the Access Control List on the DirectX “Filter Graph no thread” registry key

Impact of Workaround: This workaround disables image rendering and audio and video playback in any number of DirectX-enabled applications.

  • Un-register Quartz.dll
    Un-registering the Quartz.dll registry key helps protect the affected system from attempts to exploit this vulnerability. To modify the Quartz.dll registry key, follow these steps.
    1. Click Start, click Run, type "regsvr32 -u %windir%\system32\ quartz.dll" (without the quotation marks), and then click OK.
    2. When a dialog box appears that confirms that the process has been successful, click OK.

Impact of Workaround: This workaround disables image rendering and audio and video playback in any number of DirectX-enabled applications.

FAQ for Windows Media Player Vulnerability - CVE-2006-0006:

What is the scope of the vulnerability?
This is a remote code execution vulnerability. An attacker who successfully exploited this vulnerability could remotely 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.

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 affected than users who operate with administrative user rights.

What causes the vulnerability?
An unchecked buffer in the bitmap (.bmp) image parsing function within Windows Media Player.

What is Windows Media Player?
Windows Media Player is a feature of the Windows operating system for personal computers. It is used for playing audio and video.

What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability could take complete control of the affected system.

How could an attacker exploit the vulnerability?
In a Web-based attack scenario, an attacker would have to host a Web site that contains a Web page that is used to attempt to exploit this vulnerability. An attacker would have no way to force users to visit a malicious Web site. Instead, an attacker would have to persuade them to visit the Web site, typically by getting them to click a link that takes them to the attacker's site. It could also be possible to display malicious Web content by using banner advertisements or by using other methods to deliver Web content to affected systems.

In an e-mail attack scenario, an attacker could exploit the vulnerability by sending a specially-crafted file to the user and by persuading the user to open the file. Windows Media Player is not the default handler for .bmp files. In order for the exploit to take place, the user would have to save the .bmp file to the desktop and open it using Windows Media Player.

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 do 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.

Are Windows 98, Windows 98 Second Edition, or Windows Millennium Edition critically affected by this vulnerability?
Yes. This vulnerability is critical for Windows Media Player 9 on Windows Windows 98 Second Edition, and Windows Millennium Edition. Critical security updates for these platforms may not be available concurrently with the other security updates provided as part of this security bulletin. They will be made available as soon as possible following the release. When these security updates are available, you will be able to download them only from the Windows Update Web site. For more information about severity ratings, visit the following Web site.

What does the update do?
The update removes the vulnerability by modifying the way that the .bmp image parser validates the length of a field before it passes it to the allocated buffer.

When this security bulletin was issued, had this vulnerability been publicly disclosed?
No. Microsoft received information about this vulnerability through responsible disclosure. Microsoft had not received any information to indicate that this vulnerability had been publicly disclosed when this security bulletin was originally issued.

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.

Affected Software:

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

Note The installation information for Windows Media Player when installed on Microsoft Windows operating system is listed below in the “affected software” section.

Windows Server 2003 (all versions)

Prerequisites
This security update requires a release version of Windows Server 2003.

Inclusion in Future Service Packs:
The update for this issue will be included in future service pack or update rollup.

Installation Information

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/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 Display 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.

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

Deployment Information

To install the security update without any user intervention, use the following command at a command prompt for Windows Server 2003:

WindowsMedia9-KB911565-x86-enu /quiet

Note Use of the /quiet switch will suppress all messages. This includes suppressing failure messages. Administrators should use one of the supported methods to verify the installation was successful when they use the /quiet switch. Administrators should also review the KB911565.log file for any failure messages when they use this switch.

To install the security update without forcing the system to restart, use the following command at a command prompt for Windows Server 2003:

WindowsMedia9-KB911565-x86-enu /norestart

For information about how to deploy this security update by using Software Update Services, visit the Software Update Services Web site. For more information about how to deploy this security update using Windows Server Update Services, visit the Windows Server Update Services Web site. This security update will also be available through the Microsoft Update Web site.

Restart Requirement

This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.

Removal Information

To remove this update, use the Add or Remove Programs tool in Control Panel.

System administrators can also use the Spuninst.exe utility to remove this security update. The Spuninst.exe utility is located in the %Windir%\$NTUninstallKB911565$\Spuninst folder.

Supported Spuninst.exe Switches
SwitchDescription
/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 Display 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

File Information

The English version of this security update has the file attributes that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Windows Media Player 9 on Windows Server 2003, Web Edition; Windows Server 2003, Standard Edition; Windows Server 2003, Datacenter Edition; Windows Server 2003, Enterprise Edition; Windows Small Business Server 2003; Windows Server 2003 R2, Web Edition; Windows Server 2003 R2, Standard Edition; Windows Server 2003 R2, Datacenter Edition; Windows Server 2003 R2, Enterprise Edition; Windows Small Business Server 2003 R2:

File NameVersionDateTimeSizeFolder
Wmp.dll9.0.0.334420-Dec-200503:304,730,880System32

For more information about the Update.exe 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.

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 can use the Microsoft Baseline Security Analyzer (MBSA) tool. MBSA allows administrators to scan local and remote systems for missing security updates and for common security misconfigurations. For more information about MBSA, visit the Microsoft Baseline Security Analyzer Web site.

  • File Version Verification

    Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. 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 version of the operating system or programs installed, 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 computer 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 following registry keys.

    Windows Server 2003, Web Edition; Windows Server 2003, Standard Edition; Windows Server 2003, Enterprise Edition; Windows Server 2003, Datacenter Edition; Windows Small Business Server 2003:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Media Player 9\SP0\KB911565\Filelist

    Note This registry key may not contain a complete list of installed files. Also, this registry key may not be created correctly if an administrator or an OEM integrates or slipstreams the 911565 security update into the Windows installation source files.

Windows XP (all versions)

Prerequisites
This security update requires Microsoft Windows XP Service Pack 1 or a later version. For more information, see Microsoft Knowledge Base Article 322389.

Inclusion in Future Service Packs:
The update for this issue will be included in a future service pack or update rollup.

Installation Information

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/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 Display 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.

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

Deployment Information

To install the security update without any user intervention, use the following command at a command prompt for Microsoft Windows XP:

WindowsMedia8-KB911565-x86-enu /quiet

WindowsMedia9-KB911565-x86-enu /quiet

WindowsMedia10-KB911565-x86-enu /quiet

Note Use of the /quiet switch will suppress all messages. This includes suppressing failure messages. Administrators should use one of the supported methods to verify the installation was successful when they use the /quiet switch. Administrators should also review the KB911565.log file for any failure messages when they use this switch.

To install the security update without forcing the system to restart, use the following command at a command prompt for Windows XP:

WindowsMedia8-KB911565-x86-enu /norestart

WindowsMedia9-KB911565-x86-enu /norestart

WindowsMedia10-KB911565-x86-enu /norestart

For information about how to deploy this security update by using Software Update Services, visit the Software Update Services Web site. For more information about how to deploy this security update using Windows Server Update Services, visit the Windows Server Update Services Web site. This security update will also be available through the Microsoft Update Web site.

Restart Requirement

This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.

Removal Information

To remove this security update, use the Add or Remove Programs tool in Control Panel.

System administrators can also use the Spuninst.exe utility to remove this security update. The Spuninst.exe utility is located in the %Windir%\$NTUninstallKB911565$\Spuninst folder.

Supported Spuninst.exe Switches
SwitchDescription
/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 Display 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

File Information

The English version of this security update has the file attributes that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Windows Media Player for XP on Windows XP Home Edition Service Pack 1, Windows XP Professional Service Pack 1, Windows XP Tablet PC Edition, Windows XP Media Center Edition:

File NameVersionDateTimeSizeFolder
Wmpui.dll8.0.0.449520-Dec-200516:141,425,680System32

Windows Media Player 9 when installed on Windows XP Home Edition Service Pack 1, Windows XP Professional Service Pack 1, Windows XP Tablet PC Edition, Windows XP Media Center Edition, Windows XP Home Edition Service Pack 2, Windows XP Professional Service Pack 2, Windows XP Tablet PC Edition 2005, and Windows XP Media Center Edition 2005:

File NameVersionDateTimeSizeFolder
Wmp.dll9.0.0.334420-Dec-200503:304,730,880System32

Windows Media Player 10 when installed on Windows XP Home Edition Service Pack 1, Windows XP Professional Service Pack 1, Windows XP Tablet PC Edition, Windows XP Media Center Edition, Windows XP Home Edition Service Pack 2, Windows XP Professional Service Pack 2, Windows XP Tablet PC Edition 2005, and Windows XP Media Center Edition 2005:

File NameVersionDateTimeSizeFolder
Wmp.dll10.0.0.401910-Mar-200614:095,533,696System32

For more information about the Update.exe 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.

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 can use the Microsoft Baseline Security Analyzer (MBSA) tool. MBSA allows administrators to scan local and remote systems for missing security updates and for common security misconfigurations. For more information about MBSA, visit the Microsoft Baseline Security Analyzer Web site.

  • File Version Verification

    Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. 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 version of the operating system or programs installed, 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 computer 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 following registry keys.

    For Windows XP Home Edition Service Pack 1, Windows XP Professional Service Pack 1, Windows XP Tablet PC Edition, Windows XP Media Center Edition, Windows XP Home Edition Service Pack 2, Windows XP Professional Service Pack 2, Windows XP Tablet PC Edition 2005, and Windows XP Media Center Edition 2005:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Media Player 8\SP0\KB911565\Filelist

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Media Player 9\SP0\KB911565\Filelist

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Media Player 10\SP0\KB911565\Filelist

    Note These registry keys may not contain a complete list of installed files. Also, these registry keys may not be created correctly if an administrator or an OEM integrates or slipstreams the 911565 security update into the Windows installation source files.

Windows 2000 (all versions)

Prerequisites
For Windows 2000, this security update requires Service Pack 4 (SP4). For Small Business Server 2000, this security update requires Small Business Server 2000 Service Pack 1a (SP1a) or Small Business Server 2000 running with Windows 2000 Server Service Pack 4 (SP4).

The software that is listed has been tested to determine whether the versions are affected. Other versions either no longer include security update support or may not be affected. To determine the support life cycle for your product and version, visit the Microsoft Support Lifecycle Web site.

For more information about how to obtain the latest service pack, see Microsoft Knowledge Base Article 260910.

Inclusion in Future Service Packs:
The update for this issue may be included in a future update rollup.

Installation Information

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/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 Display 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.

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. For more information about the Update.exe 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.

Deployment Information

To install the security update without any user intervention, use the following command at a command prompt for Windows 2000 Service Pack 4:

WindowsMedia7-KB911565-x86-enu /quiet

WindowsMedia9-KB911565-x86-enu /quiet

Note Use of the /quiet switch will suppress all messages. This includes suppressing failure messages. Administrators should use one of the supported methods to verify the installation was successful when they use the /quiet switch. Administrators should also review the KB911565.log file for any failure messages when they use this switch.

To install the security update without forcing the system to restart, use the following command at a command prompt for Windows 2000 Service Pack 4:

WindowsMedia7-KB911565-x86-enu /norestart

WindowsMedia9-KB911565-x86-enu /norestart

For more information about how to deploy this security update with Software Update Services, visit the Software Update Services Web site. For more information about how to deploy this security update using Windows Server Update Services, visit the Windows Server Update Services Web site. This security update will also be available through the Microsoft Update Web site.

Restart Requirement

This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.

Removal Information

To remove this security update, use the Add or Remove Programs tool in Control Panel.

System administrators can also use the Spuninst.exe utility to remove this security update. The Spuninst.exe utility is located in the %Windir%\$NTUninstallKB911565$\Spuninst folder.

Supported Spuninst.exe Switches
SwitchDescription
/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 Display 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

File Information

The English version of this security update has the file attributes that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Windows Media Player 7.1 when installed on Windows 2000 Service Pack 4 and Small Business Server 2000:

File NameVersionDateTimeSizeFolder
Wmpui.dll7.10.0.307720-Dec-200516:221,122,304System32

Windows Media Player 9 when installed on Windows 2000 Service Pack 4 and Small Business Server 2000:

File NameVersionDateTimeSizeFolder
Wmp.dll9.0.0.334420-Dec-200503:304,730,880System32

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 can use the Microsoft Baseline Security Analyzer (MBSA) tool. MBSA allows administrators to scan local and remote systems for missing security updates and for common security misconfigurations. For more information about MBSA, visit the Microsoft Baseline Security Analyzer Web site.

  • File Version Verification

    Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. 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 version of the operating system or programs installed, 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 computer 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 following registry keys:

    HKEY_LOCAL_MACHINE \SOFTWARE\Microsoft\Updates\Windows Media Player 7.1\SP0\KB911565\Filelist

    HKEY_LOCAL_MACHINE \SOFTWARE\Microsoft\Updates\Windows Media Player 9\SP0\KB911565\Filelist

    Note This registry key may not contain a complete list of installed files. Also, this registry key may not be created correctly when an administrator or an OEM integrates or slipstreams the 911565 security update into the Windows installation source files.

Other Information

Acknowledgments

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

  • Fang Xing working with eEye for reporting the Windows Media Player Vulnerability - CVE-2006-0006

Obtaining Other Security Updates:

Updates for other security issues are available at the following locations:

Support:

  • Customers in the U.S. and Canada can receive technical support from Microsoft Product Support Services at 1-866-PCSAFETY. There is no charge for support calls that are associated with security updates.
  • 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.

Security Resources:

Software Update Services:

By using Microsoft Software Update Services (SUS), administrators can quickly and reliably deploy the latest critical updates and security updates to Windows 2000- based servers, to Windows Server 2003-based servers, and to desktop systems that are running Windows 2000 Professional or Windows XP Professional.

For more information about how to deploy security updates by using Software Update Services, visit the Software Update Services Web site.

Windows Server Update Services:

By using Windows Server Update Services (WSUS), administrators can quickly and reliably deploy the latest critical updates and security updates for Windows 2000 operating systems and later, Microsoft Office XP and later, Microsoft Exchange Server 2003, and Microsoft SQL Server 2000 onto Windows 2000 and later operating systems.

For more information about how to deploy security updates using Windows Server Update Services, visit the Windows Server Update Services Web site.

Systems Management Server:

Microsoft Systems Management Server (SMS) delivers a highly-configurable enterprise solution for managing updates. By using SMS, administrators can identify Windows-based systems that require security updates and can perform controlled deployment of these updates throughout the enterprise with minimal disruption to end users. For more information about how administrators can use SMS 2003 to deploy security updates, visit the SMS 2003 Security Patch Management Web site. SMS 2.0 users can also use Software Updates Service Feature Pack to help deploy security updates. For information about SMS, visit the SMS Web site.

Note SMS uses the Microsoft Baseline Security Analyzer, the Office Detection Tool, and the Enterprise Update Scan Tool to provide broad support for security bulletin update detection and deployment. Some software updates may not be detected by these tools. Administrators can use the inventory capabilities of the SMS in these cases to target updates to specific systems. For more information about this procedure, visit the following Web site. Some security updates require administrative rights following a restart of the system. Administrators can use the Elevated Rights Deployment Tool (available in the SMS 2003 Administration Feature Pack and in the SMS 2.0 Administration Feature Pack) to install these updates.

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 (February 14, 2006): Bulletin published
  • V1.1 (February 17, 2006): Bulletin updated for the following: “What updates does this release replace?” and “Are Windows 98, Windows 98 Second Edition, or Windows Millennium Edition critically affected by this vulnerability?” within the “Frequently asked questions (FAQ) related to this security update” section. Updated operating systems within “Severity Ratings and Vulnerability Identifiers” in the “Executive Summary” section; Revised malicious file name (.wmp to .bmp) under the “Vulnerability Details” section; Revised finder details in the “Acknowledgments” section; and additional clarity around the workaround “Un-register Quartz.dll“ in the “Workarounds for Windows Media Player” section.
  • V1.2 (March 8, 2006): Bulletin revised: “Caveats” section updated due to new issues discovered with the security update. Users may experience issues when they try to seek, fast rewind, or fast forward in Windows Media Player 10.
  • V2.0 (April 11, 2006): Bulletin updated to advise customers that revised versions of the security update are available for Microsoft Windows Media Player 10 when installed on Windows XP Service Pack 1 or Windows XP Service Pack 2, listed in the “Affected Components” section. For more information, see “What are the known issues that customers may experience when they install this security update?” Additional clarity under “How could an attacker exploit the vulnerability?” in the “FAQ for Windows Media Player Vulnerability” section.
  • V2.0 (May 25, 2006): Bulletin revised: “Caveats” section updated due to revised versions of the security update are available for Microsoft Windows Media Player 10 when installed on Windows XP Service Pack 1 and/or Windows XP Service Pack 2.

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