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Microsoft Security Bulletin MS05-041 - Moderate

Vulnerability in Remote Desktop Protocol Could Allow Denial of Service (899591)

Published: August 09, 2005

Version: 1.0

Summary

Who should read this document: System administrators who operate terminal servers that use Microsoft Windows 2000 or Windows Server 2003, system administrators who operate any system where Remote Desktop or Remote Web Workplace has been enabled, and system administrators who operate any system where Remote Assistance is in use.

Impact of Vulnerability: Denial of Service

Maximum Severity Rating: Moderate

Recommendation: We recommend that customers consider applying the security update.

Security Update Replacement: None

Caveats: None

Tested Software and Security Update Download Locations:

Affected Software:

Non-Affected Software:

  • Microsoft Windows 2000 Professional Service Pack 4
  • Microsoft Windows 98, Microsoft Windows 98 Second Edition (SE), and Microsoft Windows Millennium Edition (ME)

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. A vulnerability in the Remote Desktop Protocol (RDP) exists that could allow an attacker to cause a system to stop responding. The vulnerability is documented in the “Vulnerability Details” section of this bulletin.

We recommend that customers consider applying the security update.

Severity Ratings and Vulnerability Identifiers:

Vulnerability IdentifiersImpact of VulnerabilityWindows 2000 ServerWindows XPWindows Server 2003
Remote Desktop Protocol Vulnerability - CAN-2005-1218Denial of ServiceModerateModerateModerate

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 XP Professional x64 Edition severity rating is the same as the Windows XP Service Pack 2 severity rating.
  • The Microsoft Windows Server 2003 for Itanium-based Systems severity rating is the same as the Windows Server 2003 severity rating.
  • The Microsoft Windows Server 2003 with SP1 for Itanium-based Systems severity rating is the same as the Windows Server 2003 Service Pack 1 severity rating.
  • The Microsoft Windows Server 2003 x64 Edition severity rating is the same as the Windows Server 2003 Service Pack 1 severity rating.

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’m 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 additional support for Windows NT 4.0 SP6a 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.

Security update support for Microsoft Windows XP 64-Bit Edition Service Pack 1 (Itanium) and Microsoft Windows XP 64-Bit Edition Version 2003 (Itanium)ended on June 30, 2005.I’m still using one of these operating systems, what should I do?

With the release of Windows XP Professional x64 Edition, Microsoft Windows XP 64-Bit Edition Service Pack 1 (Itanium) and Microsoft Windows XP 64-Bit Edition Version 2003 (Itanium) will no longer receive security update support. It should be a priority for customers who have these operating system versions to migrate to supported versions to prevent potential exposure to vulnerabilities. Microsoft will continue to fully support Windows Server 2003 for Itanium-based systems, Windows XP Professional x64 Edition, and Windows Server 2003 x64 Editions for 64-bit computing requirements. Microsoft continues to license and support Windows Server 2003 Enterprise and Datacenter editions for Itanium-based systems, and the 64-bit version of SQL Server 2000 Enterprise Edition. In the future we will expand Itanium support to Visual Studio 2005, .NET Framework 2005 and SQL Server 2005.

Customers who require additional assistance about this issue must contact their Microsoft account team representative, their Technical Account Manager, or the appropriate Microsoft partner representative for information about the available migration 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.

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 more information about MBSA, visit the MBSA Web site.

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.

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 theSMS 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.

Remote Desktop Protocol Vulnerability - CAN-2005-1218:

A denial of service vulnerability exists that could allow an attacker to send a specially crafted Remote Data Protocol (RDP) message to an affected system. An attacker could cause this system to stop responding.

Mitigating Factors for Remote Desktop Protocol Vulnerability - CAN-2005-1218:

  • Firewall best practices and standard default firewall configurations can help protect networks from attacks that originate outside the enterprise perimeter. Best practices recommend that systems that are connected to the Internet have a minimal number of ports exposed.
  • By default, the Remote Desktop Protocol (RDP) is not enabled on any operating system version. On Windows XP and Windows Server 2003, Remote Assistance can enable RDP. On Windows XP Media Center Edition, RDP is enabled if a Media Center Extender has been installed. For information about Media Center Extenders, visit the following Web site.

    On Small Business Server 2000 and on Windows Small Business Server 2003, RDP in enabled by default. However, by default, on Windows Small Business Server 2003 and earlier, the RDP Protocol communication ports are blocked from the Internet. RDP is available only on the local network unless Terminal Services or the Remote Web Workplace features have been enabled by using the Configure E-mail and Internet Connection Wizard (CEICW).

  • If Remote Desktop is manually enabled, the following Windows Firewall changes will occur, depending on the operating system version:
    • On Windows XP Service Pack 2 systems that have the Windows Firewall enabled, enabling the Remote Desktop feature will automatically enable the Remote Desktop exception in the firewall, with the scope of All computers (including those on the Internet). When you disable Remote Desktop, this firewall exception is automatically disabled.

      On Windows XP Service Pack 1, Windows Server 2003, and Windows Server 2003 Service Pack 1, enabling the Remote Desktop Feature does not enable the Remote Desktop exception in the firewall. Enabling Remote Desktop causes a dialog box that indicates that you must manually enable this exception. There is a Remote Desktop entry in the exception in the list of the firewall exceptions that a user would have to manually enable. Disabling Remote Desktop does not change the exception status in the firewall. However, although the system is no longer vulnerable to this issue through Remote Desktop, it could still be vulnerable through Remote Assistance and Terminal Services, where available.

Workarounds for Remote Desktop Protocol Vulnerability - CAN-2005-1218:

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.

  • Disable Terminal Services, Remote Desktop, Remote Assistance, and Windows Small Business Server 2003 Remote Web Workplace feature if they are no longer required.

    If you no longer need these services on your system, consider disabling them as a security best practice. Disabling unused and unneeded services helps reduce your exposure to security vulnerabilities.

    For information about how to disable Remote Desktop manually, visit the following Web site.

    For information about how to disable Remote Desktop by using Group Policy, see the following Microsoft Knowledge Base Article.

    For information about Remote Assistance, including instructions on how to disable Remote Assistance manually and by using Group Policy, visit the following Web site.

    For information about how to disable the Windows Small Business Server 2003 Terminal Services and Remote Web Workplace features, visit the following Web site.

  • Block TCP port 3389 at the enterprise perimeter firewall:

    This port is used to initiate a connection with the affected component. Blocking it at the network perimeter firewall will help protect systems that are behind that firewall from attempts to exploit this vulnerability. This can help protect networks from attacks that originate outside the enterprise perimeter. Blocking the affected ports at the enterprise perimeter is the best defense to help avoid Internet-based attacks. However, systems could still be vulnerable to attacks from within their enterprise perimeter. Additionally, on Windows XP and Windows Server 2003, the Windows Firewall can help protect individual systems. By default, the Windows Firewall does not allow connections to this port, except in Windows XP Service Pack 2 when the Remote Desktop feature is enabled. For information about how to disable the Windows Firewall exception for Remote Desktop on these platforms, visit the following Web site. If you cannot disable the Windows Firewall exception for Remote Desktop, you may be able to reduce the scope of this vulnerability by setting the default value of All computers (Including those on the Internet), to the local network. Doing this helps reduce the likelihood of attacks from the Internet.

    Note Windows Small Business Server 2003 uses a feature named Remote Web Workplace. This feature uses TCP port 4125 to listen for RDP connections. If you are using this feature, you should validate that this port is also blocked from the Internet in addition to port 3389.

    Note It is possible to manually change the affected components to use other ports. If you have performed these actions, you should also block those additional ports.

  • Help secure Remote Desktop Connections by using an IPsec policy.

    Specific configurations would be dependent upon the individual environment. For information about Internet Protocol Security (IPsec), visit the following Web site. Detailed information about IPsec and about how to apply filters is available in Microsoft Knowledge Base Article 313190 and Microsoft Knowledge Base Article 813878.

  • Help secure Remote Desktop Connections by using a virtual private network (VPN) connection.

    Specific configurations depend on the individual environment. For information about Virtual Private Networks, visit the following Web site.

FAQ for Remote Desktop Protocol Vulnerability - CAN-2005-1218:

What is the scope of the vulnerability?

This is a denial of service vulnerability. An attacker who exploited this vulnerability could cause the affected system to stop responding and automatically restart. During that time, the server could not respond to requests. The denial of service vulnerability would not allow an attacker to execute code or to elevate their user rights, but it could cause the affected system to stop accepting requests.

What causes the vulnerability?
The process used to validate data by the Remote Desktop Protocol.

What is Remote Desktop Protocol (RDP)?
Remote Desktop Protocol (RDP) lets users create a virtual session on their desktop computers. It allows remote users to access all the data and applications on their computers. For more information about RDP, visit the following Web site.

In which Microsoft products is RDP implemented?
In general, RDP is the underlying protocol for Windows features that allow remote desktop sessions. These features include:

  • Terminal Services in Windows 2000 and in Windows Server 2003 implement RDP. For more information about Terminal Services and RDP, visit the following Web site.
  • Remote Desktop in Windows XP implements RDP. For more information about the Remote Desktop feature in Windows XP, visit the following Web site.
  • Creating a Remote Assistance request in Windows XP and Windows Server 2003 enables RDP until a short time after the request expires. For information about Remote Assistance, including instructions on how to disable Remote Assistance manually and by using Group Policy, visit the following Web site.
  • Media Center Extenders on Windows XP Media Center Edition 2005 systems enable RDP. For information about Media Center Extenders, visit the following Web site. For detailed technical information about Media Center Extenders, visit the following Web site. The Media Center Extenders can use RDP over ports beyond the default TCP 3389 port.
  • Remote Web Workplace in Windows Small Business Server 2003 enables RDP. For more information about this feature, see the following TechNet Support WebCast. For information about how to disable the Windows Small Business Server 2003 Remote Web Workplace feature, visit the following Web site. The Remote Web Workplace feature will use RDP over ports beyond the default TCP 3389 port.

Is RDP enabled by default in Windows?
No. By default, the Remote Desktop Protocol (RDP) is not enabled on any operating system version. On some versions of Windows XP Media Center Edition, RDP is enabled if a Media Center Extender has been installed. For information about Media Center Extenders, visit the following Web site. For detailed technical information about Media Center Extenders, visit the following Web site.

Small Business Server 2000 and Windows Small Business Server 2003 enable RDP by default. However, by default, on Windows Small Business Server 2003 and earlier, the RDP Protocol communication ports are blocked from the Internet and RDP is available only on the local network, unless Terminal Services or Remote Web Workplace has been enabled by using the Configure E-mail and Internet Connection Wizard (CEICW).

Windows XP Home Edition does not support Remote Desktop. However, it does support Remote Assistance. Remote Assistance enables RDP until a short time after the Remote Assistance request expires. During this time, Windows XP Home systems could be vulnerable to this issue if they allow the Remote Desktop exception through the Windows Firewall.

What might an attacker use the vulnerability to do?
An attacker who exploited this vulnerability could cause the affected system to stop responding.

Who could exploit the vulnerability?
Any anonymous user who could deliver a specially crafted message to the affected system could try to exploit this vulnerability.

How could an attacker exploit the vulnerability?
An attacker could try to exploit the vulnerability by creating a specially crafted message and sending the message to an affected system. Receipt of such a message could cause the vulnerable system to fail in such a way that it could cause a denial of service.

What systems are primarily at risk from the vulnerability?
Windows 2000 Server-based terminal servers and Windows Server 2003-based terminal servers are primarily at risk from this vulnerability. Administrators must manually configure these operating system versions to enable the Terminal Server features to become vulnerable to this issue. Windows Small Business Server 2003-based servers are also at risk if the administrator has used the Configure E-mail and Internet Connection Wizard to enable Terminal Services or the Remote Web Workplace connections to the server from the Internet. Windows XP and Windows Server 2003 systems are at risk if they have manually enabled Remote Desktop or are using Remote Assistance. Windows 2000 Professional does not contain support for the RDP protocol and is not vulnerable to this issue.

Could the vulnerability be exploited over the Internet?
Yes. An attacker could try to exploit this vulnerability over the Internet. Firewall best practices and standard default firewall configurations can help protect against attacks that originate from the Internet. Microsoft has provided information about how you can help protect your PC. End users can visit the Protect Your PC Web site. IT professionals can visit the Security Guidance Center Web site.

What does the update do?
The update removes the vulnerability by modifying the way that RDP validates the length of a message before reading the message.

When this security bulletin was issued, had this vulnerability been publicly disclosed?
Yes. This vulnerability has been publicly disclosed.

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.

Does applying this security update help protect customers from the vulnerability details that had been published publicly?
Yes. This security update addresses the vulnerability details that have been published on this issue.

Affected Software:

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

Windows Server 2003 (all versions)

Prerequisites
This security update requires Windows Server 2003 or Windows Server 2003 Service Pack 1.

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:

Windowsserver2003-kb899591-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 KB899591.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:

Windowsserver2003-kb899591-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

You must restart your system after you apply this security update.

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%\$NTUninstallKB899591$\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 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, Web Edition with SP1; Windows Server 2003, Standard Edition with SP1; Windows Server 2003, Enterprise Edition with SP1; and Windows Server 2003, Datacenter Edition with SP1:

File NameVersionDateTimeSizeFolder
Rdpwd.sys5.2.3790.34815-Jun-200515:13123,016RTMGDR
Rdpwd.sys5.2.3790.34815-Jun-200515:25123,016RTMQFE
Rdpwd.sys5.2.3790.246515-Jun-200515:33158,344SP1GDR
Rdpwd.sys5.2.3790.246515-Jun-200515:38152,200SP1QFE
Arpidfix.exe5.2.3790.247730-Jun-200500:4432,256

Windows Server, 2003 Enterprise Edition for Itanium-based Systems; Windows Server 2003, Datacenter Edition for Itanium-based Systems; Windows Server 2003, Enterprise Edition with SP1 for Itanium-based Systems; and Windows Server 2003, Datacenter Edition with SP1 for Itanium-based Systems:

File NameVersionDateTimeSizeCPUFolder
Rdpwd.sys5.2.3790.34801-Jul-200523:27370,312IA-64RTMGDR
Rdpwd.sys5.2.3790.34801-Jul-200523:27370,312IA-64RTMQFE
Rdpwd.sys5.2.3790.246501-Jul-200523:27477,832IA-64SP1GDR
Rdpwd.sys5.2.3790.246501-Jul-200523:27477,832IA-64SP1QFE
Arpidfix.exe5.2.3790.247701-Jul-200523:2774,752IA-64

Windows Server 2003, Standard x64 Edition; Windows Server 2003, Enterprise x64 Edition; and Windows Server 2003, Datacenter x64 Edition:

File NameVersionDateTimeSizeCPUFolder
Rdpwd.sys5.2.3790.246501-Jul-200523:27230,024x64SP1GDR
Rdpwd.sys5.2.3790.246501-Jul-200523:27230,024x64SP1QFE
Arpidfix.exe5.2.3790.247701-Jul-200523:2743,008x64

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

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

For more information about this behavior, see Microsoft Knowledge Base Article 824994.

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.

Arpidfix.exe is used by the security update installer to address an issue documented in Microsoft Knowledge Base Article 904630. This file is not installed onto the affected system.

Verifying that the Update Has Been Applied

  • Microsoft Baseline Security Analyzer

    To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. 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; Windows Server 2003, Web Edition with SP1; Windows Server 2003, Standard Edition with SP1; Windows Server 2003, Enterprise Edition with SP1; Windows Server 2003, Datacenter Edition with SP1; Windows Server 2003, Enterprise Edition for Itanium-based Systems; Windows Server 2003, Datacenter Edition for Itanium-based Systems; Windows Server 2003, Enterprise Edition with SP1 for Itanium-based Systems; Windows Server 2003, Datacenter Edition with SP1 for Itanium-based Systems; Windows Server 2003, Standard x64 Edition; Windows Server 2003, Enterprise x64 Edition; and Windows Server 2003, Datacenter x64 Edition:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Server 2003\SP2\KB899591\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 899591 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:

Windowsxp-kb899591-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 KB899591.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:

Windowsxp-kb899591-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

You must restart your system after you apply this security update.

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%\$NTUninstallKB899591$\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 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
Rdpwd.sys5.1.2600.169810-Jun-200504:30116,104SP1QFE
Rdpwd.sys5.1.2600.269510-Jun-200504:09139,528SP2GDR
Rdpwd.sys5.1.2600.269510-Jun-200504:06139,528SP2QFE
Arpidfix.exe5.1.2600.271029-Jun-200523:5430,720

Windows XP Professional x64 Edition:

File NameVersionDateTimeSizeCPUFolder
Rdpwd.sys5.2.3790.246501-Jul-200523:27230,024x64SP1GDR
Rdpwd.sys5.2.3790.246501-Jul-200523:27230,024x64SP1QFE
Arpidfix.exe5.2.3790.247701-Jul-200523:2743,008x64

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

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

For more information about the 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.

Arpidfix.exe is used by the security update installer to address an issue documented in Microsoft Knowledge Base Article 904630. This file is not installed onto the affected system.

Verifying that the Update Has Been Applied

  • Microsoft Baseline Security Analyzer

    To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. 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 XP\SP3\KB899591\Filelist

    For Windows XP Professional x64 Edition:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP Version 2003\SP2\KB899591\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 899591 security update into the Windows installation source files.

Windows 2000 Server (all versions)

Prerequisites
For Windows 2000 Server, 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:

Windows2000-kb899591-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 KB899591.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:

Windows2000-kb899591-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

You must restart your system after you apply this security update.

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%\$NTUninstallKB899591$\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 2000 Server Service Pack 4 and Small Business Server 2000:

File NameVersionDateTimeSize
Rdpwd.sys5.0.2195.705529-Jun-200508:4990,296

Verifying that the Update Has Been Applied

  • Microsoft Baseline Security Analyzer

    To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. 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 key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows 2000\SP5\KB899591\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 899591 security update into the Windows installation source files.

Other Information

Acknowledgments

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

  • Tom Ferris of Security Protocols for reporting the Remote Desktop Protocol Vulnerability (CAN-2005-1218).

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 and 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, Office XP and later, Exchange Server 2003, and SQL Server 2000 to 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 Microsoft Office Detection Tool, and the Enterprise Update Scanning 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 (August 9, 2005): Bulletin published

Built at 2014-04-18T13:49:36Z-07:00

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