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Microsoft Security Bulletin MS05-001 - Critical

Vulnerability in HTML Help Could Allow Code Execution (890175)

Published: January 11, 2005

Version: 1.0

Issued: January 11, 2005
Version: 1.0

Summary

Who should read this document: Customers who use Microsoft Windows

Impact of Vulnerability: Remote Code Execution

Maximum Severity Rating: Critical

Recommendation: Customers should apply the update immediately.

Security Update Replacement: None

Caveats: Microsoft Knowledge Base Article 890175 documents the currently known issues that customers may experience when they install this security update. The article also documents recommended solutions for these issues.

Windows NT Server 4.0 and Windows NT 4.0 Terminal Server Edition are not affected by default. However, if you have installed Internet Explorer 6.0 Service Pack 1, which is the only supported version of Internet Explorer for Windows NT Server 4.0 and Windows NT 4.0 Terminal Server Edition, you will have the affected component on your system. An update is available for these configurations: see the download for Internet Explorer 6 Service Pack 1 under Affected Components.

Tested Software and Security Update Download Locations:

Affected Software:

  • Microsoft Windows 2000 Service Pack 3 and Microsoft Windows 2000 Service Pack 4 – Download the update
  • Microsoft Windows XP Service Pack 1 and Microsoft Windows XP Service Pack 2 – Download the update
  • Microsoft Windows XP 64-Bit Edition Service Pack 1 – Download the update
  • Microsoft Windows XP 64-Bit Edition Version 2003 –Download the update
  • Microsoft Windows Server 2003 – Download the update
  • Microsoft Windows Server 2003 64-Bit Edition – 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.

Non-Affected Software:

  • Microsoft Windows NT Server 4.0 Service Pack 6a
  • Microsoft Windows NT Server 4.0 Terminal Server Edition Service Pack 6

Tested Microsoft Windows Components:

Affected Components:

  • Internet Explorer 6.0 Service Pack 1 when installed on Microsoft Windows NT Server 4.0 Service Pack 6a or Microsoft Windows NT Server 4.0 Terminal Server Edition Service Pack 6 – Download the update

The software in this list has been tested to determine if 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 following Microsoft Support Lifecycle Web site.

General Information

Executive Summary:

This update resolves a newly-discovered, publicly reported vulnerability. A vulnerability exists in the HTML Help ActiveX control in Windows that could allow information disclosure or remote code execution on an affected system. This vulnerability is documented in the Vulnerability Details section of this bulletin.

If a user is logged on with administrative privileges, 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 privileges. Users whose accounts are configured to have fewer privileges on the system could be less impacted than users who operate with administrative privileges.

We recommend that customers install the update immediately.

Severity Ratings and Vulnerability Identifiers:

Vulnerability IdentifiersImpact of VulnerabilityWindows 98, 98 SE, MEWindows NT 4.0Windows 2000Windows XPWindows Server 2003
HTML Help ActiveX control Cross Domain Vulnerability - CAN-2004-1043Remote Code ExecutionCriticalCriticalCriticalCriticalModerate

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.

Does this update contain any changes to functionality?
This security update prevents the creation of an instance of the HTML Help Active X control in HTML content that is served from outside the Local Machine zone. This change may prevent certain kinds of Web-based applications from functioning correctly. To resolve this issue, the user or administrator can selectively enable this ability on a site-by-site basis. Alternatively, they can enable this ability on the basis of the zone. Examples of zones include the Local intranet zone and the Trusted sites zone.

For more information on how to allow trusted HTML Help content to be displayed from sites outside of the Local Machine Zone see Microsoft Knowledge Base Article 892675. Also see FAQ “Can I enable trusted HTML Help content outside the Local Machine zone?” in this security bulletin.

Can I enable trusted HTML Help content outside the Local Machine zone?
Yes. You can enable HTML Help content outside the Local Machine zone. You can allow specific sites or security zones to render HTML Help content. To do this, create either or both of the following registry keys.

Warning When you do this, be very selective and allow only sites or security zones that you trust.

Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

To allow specific sites to render HTML Help content:

  1. Click Start, click Run, type Regedit in the Open box, and then click OK.
  2. Locate and then click the following registry subkey:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x
    Note If this registry subkey does not exist, create it.
  3. On the Edit menu, point to New, and then click Key.
  4. Type HHRestrictions, and then press ENTER.
  5. Right-click the HHRestrictions subkey, point to New, and then click String Value.
  6. Type UrlAllowList, and then press ENTER.
  7. Right-click the UrlAllowList value and then click Modify.
  8. Add URL prefixes as a semi-colon separated list into the Value Data field, and then press ENTER.
    For example, “http://www.wingtiptoys.com/help/helpdocuments;http://myintranetapplication/help/helpfiles” (without the quotation marks).
    Note The Value Data field of this registry value is by default blank.

To allow all sites in a specific zone to render HTML Help content:

  1. Click Start, click Run, type Regedit in the Open box, and then click OK.
  2. Locate and then click the following registry subkey:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x
    Note If this registry subkey does not exist, create it.
  3. On the Edit menu, point to New, and then click Key.
  4. Type HHRestrictions, and then press ENTER.
  5. Right-click the HHRestrictions subkey, point to New, and then click DWORD Value.
  6. Type MaxAllowedZone, and then press ENTER.
  7. Right-click the MaxAllowedZone value and then click Modify.
  8. Change the Value Data field to a number between 0 and 4, and then press ENTER.

Note The Value Data field of this registry value is by default set to 0 (zero). See the following table that outlines how different values are interpreted.

MaxAllowedZoneLocal Machine zoneLocal intranet zoneTrusted sites zoneInternet zoneRestricted sites zone
0AllowedBlockedBlockedBlockedBlocked
1AllowedAllowedBlockedBlockedBlocked
2AllowedAllowedAllowedBlockedBlocked
3AllowedAllowedAllowedAllowedBlocked
4AllowedAllowedAllowedAllowedAllowed

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. 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.

Are Windows 98, Windows 98 Second Edition, or Windows Millennium Edition critically affected by the vulnerability that is addressed in this security bulletin?
Yes. Windows 98, Windows 98 Second Edition, and Windows Millennium Edition are critically affected by this vulnerability. A Critical security update for these platforms is available and is provided as part of this security bulletin and can be downloaded only from the Microsoft Update Web site. For more information about severity ratings, visit the following Web site.

Note Updates for localized versions of Microsoft Windows 98 and Microsoft Windows 98 Second Edition that are not supported by Windows Update are available for download at the following download locations:

I am still using Microsoft Windows NT 4.0 Workstation Service Pack 6a or Windows 2000 Service Pack 2, but extended security update support ended on June 30, 2004. What should I do?
Windows NT 4.0 Workstation Service Pack 6a and Windows 2000 Service Pack 2 have reached the end of their life cycles, as previously documented. Microsoft extended this support to June 30, 2004.

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 following Microsoft Product Support Services Web site.

Customers who require additional support for Windows NT Workstation 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 who do not have 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.

I am still using Windows XP, but extended security update support ended on September 30th, 2004.
The original version of Windows XP, commonly known as Windows XP Gold or Windows XP Release to Manufacturing (RTM) version, reached the end of its extended security update support life cycle on September 30, 2004.

It should be a priority for customers who have this operating system version to migrate to supported operating system versions to prevent potential exposure to vulnerabilities. For more information about the Windows Service Pack Product Lifecycle, visit the Microsoft Support Lifecycle Web site. For more information about the Windows Product Lifecycle, visit the Microsoft Support Lifecycle Web site.

For more information, see the Windows Operating System Product Support Lifecycle FAQ.

I am still using Windows NT 4.0 Server, but extended security update support ended on December 31st, 2004. However, this bulletin has a security update for this operating system version. Why is that?
Windows NT 4.0 Server Service Pack 6a and Windows NT 4.0 Server Terminal Server Edition Service Pack 6 reached the end of their life cycles, as previously documented. However, the end-of-life occurred very recently. In this case, most of the steps that are required to address this vulnerability were completed before this date. Therefore, we have decided to release a security update for this operating system version as part of this security bulletin.

We do not anticipate doing this for future vulnerabilities that may affect this operating system version, but we reserve the right to produce updates and to make these updates available when necessary. It should be a priority for customers who have this operating system version to migrate to supported operating system versions to prevent potential exposure to vulnerabilities. For more information about the Windows Service Pack Product Lifecycle, visit the Microsoft Support Lifecycle Web site. For more information about the Windows Product Lifecycle, visit the Microsoft Support Lifecycle Web site.

For more information, see the Windows Operating System Product Support Lifecycle FAQ.

I am running Internet Explorer on Windows Server 2003. Does this mitigate this vulnerability?
Yes. By default, Internet Explorer on Windows Server 2003 runs in a restricted mode that is known as Enhanced Security Configuration. This mode mitigates this issue.

What is Internet Explorer Enhanced Security Configuration?
Internet Explorer Enhanced Security Configuration is a group of preconfigured Internet Explorer settings that reduce the likelihood of a user or of an administrator downloading and running malicious Web content on a server. Internet Explorer Enhanced Security Configuration reduces this risk by modifying many security-related settings, including the settings on the Security and the Advanced tab in the Internet Options dialog box. Some of the important modifications include the following:

  • Security level for the Internet zone is set to High. This setting disables scripts, ActiveX controls, Microsoft Java Virtual Machine (MSJVM), HTML content, and file downloads.
  • Automatic detection of intranet sites is disabled. This setting assigns all intranet Web sites and all Universal Naming Convention (UNC) paths that are not explicitly listed in the Local intranet zone to the Internet zone.
  • Install On Demand and non-Microsoft browser extensions are disabled. This setting prevents Web pages from automatically installing components and prevents non-Microsoft extensions from running.
  • Multimedia content is disabled. This setting prevents music, animations, and video clips from running.

I am running Internet Explorer on Windows XP Service Pack 2. Does this mitigate this vulnerability?
No. While Internet Explorer on Windows XP Service Pack 2 does include changes to how HTML content is rendered in the Local Machine zone, this issue is not mitigated by these changes.

Can I use the Microsoft Baseline Security Analyzer (MBSA) to determine if this update is required?
Yes. MBSA will determine if this update is required. For more information about MBSA, visit the MBSA Web site.

Note After April 20, 2004, the Mssecure.xml file that is used by MBSA 1.1.1 and earlier versions is no longer being updated with new security bulletin data. Therefore, scans that are performed after that date with MBSA 1.1.1 or earlier will be incomplete. All users should upgrade to MBSA 1.2.1 because it provides more accurate security update detection and supports additional products. Users can download MBSA 1.2.1 from the MBSA Web site. For more information about MBSA support, visit the following Microsoft Baseline Security Analyzer (MBSA) 1.2.1 Q&A.

Can I use Systems Management Server (SMS) to determine if 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 is required for detecting Microsoft Windows and other affected Microsoft products. For more information about the limitations of the Security Update Inventory Tool, see Microsoft Knowledge Base Article 306460.

HTML Help ActiveX control Cross Domain Vulnerability - CAN-2004-1043:

A cross-domain vulnerability exists in HTML Help ActiveX control that could allow information disclosure or remote code execution on an affected system. An attacker could exploit the vulnerability by constructing a malicious Web page that could potentially allow remote code execution if a user visited that page. An attacker who successfully exploited this vulnerability could take complete control of an affected system.

Mitigating Factors for HTML Help ActiveX control Cross Domain Vulnerability - CAN-2004-1043:

  • In a Web-based attack scenario, an attacker would have to host a Web site that contains a Web page that is used to exploit this vulnerability (An attacker could also attempt to compromise a Web site to have it serve up a Web page with malicious content to attempt to exploit this vulnerability.). An attacker would have no way to force users to visit a 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 or to a site that has been compromised by the attacker.
  • An attacker who successfully exploited this vulnerability could gain the same privileges as the user. Users whose accounts are configured to have fewer privileges on the system could be less impacted than users who operate with administrative privileges.
  • By default, Outlook Express 6, Outlook 2002, and Outlook 2003 open HTML e-mail messages in the Restricted sites zone. Additionally, Outlook 2000 opens HTML e-mail messages in the Restricted sites zone if the Outlook E-mail Security Update has been installed. Outlook Express 5.5 Service Pack 2 opens HTML e-mail messages in the Restricted sites zone if Microsoft Security Bulletin MS04-018 has been installed. The Restricted sites zone helps reduce attacks that could attempt to exploit this vulnerability.

    The risk of attack from the HTML e-mail vector can be significantly reduced if you meet all the following conditions:

    • Install the update that is included with Microsoft Security Bulletin MS03-040 or a later Cumulative Security Update for Internet Explorer.
    • Use Microsoft Outlook 2000 with the Microsoft Outlook E-mail Security Update installed.
    • Use Microsoft Outlook Express 6 or later or Microsoft Outlook 2000 Service Pack 2 or later in their default configuration.
  • By default, Internet Explorer on Windows Server 2003 runs in a restricted mode that is known as Enhanced Security Configuration. This mode mitigates this vulnerability. See the FAQ section for this security update for more information about Internet Explorer Enhanced Security Configuration.

Workarounds for HTML Help ActiveX control Cross Domain Vulnerability - CAN-2004-1043:

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 below.

  • Set Internet and Local intranet security zone settings to “High” to prompt before running ActiveX controls and active scripting in the Internet zone and in the Local intranet zone.

    You can help protect against this vulnerability by changing your settings for the Internet security zone to prompt before running ActiveX controls and active scripting. You can do this by setting your browser security to High.

    To raise the browsing security level in Microsoft Internet Explorer:

    1. On the Internet Explorer Tools menu, click Internet Options.
    2. In the Internet Options dialog box, click the Security tab, and then click the Internet icon.
    3. Under Security level for this zone, move the slider to High. This sets the security level for all Web sites you visit to High.

    Note If no slider is visible, click Default Level, and then move the slider to High.

    Note Setting the level to High may cause some Web sites to work incorrectly. If you have difficulty using a Web site after you change this setting, and you are sure the site is safe to use, you can add that site to your list of trusted sites. This will allow the site to work correctly even with the high security setting.

    Alternatively, you can change you settings to prompt before running ActiveX controls only by following these steps:

    1. In Internet Explorer, click Internet Options on the Tools menu.
    2. Click the Security tab.
    3. Click Internet, and then click Custom Level.
    4. Under Settings, in the ActiveX controls and plug-ins section, under Run ActiveX controls and plug-ins, click Prompt.
    5. In the Scripting section, under Active Scripting, click Prompt, and then click OK.
    6. Click Local intranet, and then click Custom Level.
    7. Under Settings, in the ActiveX controls and plug-ins section, under Run ActiveX controls and plug-ins, click Prompt.
    8. In the Scripting section, under Active Scripting, click Prompt.
    9. Click OK two times to return to Internet Explorer.

    Impact of Workaround: There are side effects to prompting before running ActiveX controls. Many Web sites that are on the Internet or on an intranet use ActiveX to provide additional functionality. For example, an online e-commerce site or banking site may use ActiveX controls to provide menus, ordering forms, or even account statements. Prompting before running ActiveX controls is a global setting that affects all Internet and intranet sites. You will be prompted frequently when you enable this workaround. For each prompt, if you feel you trust the site that you are visiting, click Yes to run ActiveX controls. If you do not want to be prompted for all these sites, use the "Restrict Web sites to only your trusted Web sites" workaround.

  • Restrict Web sites to only your trusted Web sites.

    After you set Internet Explorer to require a prompt before it runs ActiveX controls and active scripting in the Internet zone and in the Local intranet zone, you can add sites that you trust to Internet Explorer's Trusted sites zone. This will allow you to continue to use trusted Web sites exactly as you do today, while helping to protect you from this attack on untrusted sites. We recommend that you add only sites that you trust to the Trusted sites zone.

    To do this, follow these steps:

    1. In Internet Explorer, click Tools, click Internet Options, and then click the Security tab.
    2. In the Select a Web content zone to specify its current security settings box, click Trusted Sites, and then click Sites.
    3. If you want to add sites that do not require an encrypted channel, click to clear the Require server verification (https:) for all sites in this zone check box.
    4. In the Add this Web site to the zone box, type the URL of a site that you trust, and then click Add.
    5. Repeat these steps for each site that you want to add to the zone.
    6. Click OK two times to accept the changes and return to Internet Explorer.

    Add any sites that you trust not to take malicious action on your computer. One in particular that you may want to add is "*.windowsupdate.microsoft.com" (without the quotation marks). This is the site that will host the update, and it requires using an ActiveX control to install the update.

  • Install the Outlook E-mail Security Update if you are using Outlook 2000 SP1 or earlier.

    By default, Outlook Express 6, Outlook 2002, and Outlook 2003 open HTML e-mail messages in the Restricted sites zone. Additionally, Outlook 2000 opens HTML e-mail messages in the Restricted sites zone if the Outlook E-mail Security Update has been installed.

    Customers who use any of these products could be at a reduced risk from an e-mail-borne attack that tries to exploit this vulnerability unless the user clicks a malicious link in the e-mail message.

  • Install the update that is described in Microsoft Security Bulletin MS04-018 if you are using Outlook Express 5.5 SP2.

    Outlook Express 5.5 Service Pack 2 opens HTML e-mail messages in the Restricted sites zone if Microsoft Security Bulletin MS04-018 has been installed.

    Customers who use any of these products could be at a reduced risk from an e-mail-borne attack that tries to exploit this vulnerability unless the user clicks a malicious link in the e-mail message.

  • Read e-mail messages in plain text format if you are using Outlook 2002 or later, or Outlook Express 6 SP1 or later, to help protect yourself from the HTML e-mail attack vector.

    Outlook 2002 users who have applied Office XP Service Pack 1 or later and Outlook Express 6 users who have applied Internet Explorer 6 Service Pack 1 can enable this setting and view e-mail messages that are not digitally signed or e-mail messages that are not encrypted in plain text only.

    Digitally signed e-mail messages or encrypted e-mail messages are not affected by the setting and may be read in their original formats. For more information about enabling this setting in Outlook 2002, see Microsoft Knowledge Base Article 307594.

    For information about this setting in Outlook Express 6, see Microsoft Knowledge Base Article 291387.

    Impact of Workaround: E-mail messages that are viewed in plain text format will not contain pictures, specialized fonts, animations, or other rich content. Additionally:

    • The changes are applied to the preview pane and to open messages.
    • Pictures become attachments so that they are not lost.
    • Because the message is still in Rich Text or HTML format in the store, the object model (custom code solutions) may behave unexpectedly.
  • Temporarily disable the HTML Help ActiveX control from running in Internet Explorer

    You can help protect against this vulnerability by temporarily disabling the HTML Help ActiveX control from running in Internet Explorer by setting the kill bit for the control.

    Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

    The CLSID for an ActiveX control is a GUID for that control. You can prevent an ActiveX control from running in Internet Explorer by setting the kill bit so that the control is never called by Internet Explorer. The kill bit is a specific value for the Compatibility Flags DWORD value for the ActiveX control in the registry.

    The CLSID for the HTML Help ActiveX control is {41B23C28-488E-4E5C-ACE2-BB0BBABE99E8}

    For detailed steps about stopping an ActiveX control from running in Internet Explorer, see Microsoft Knowledge Base Article 240797. Follow these steps and create a Compatibility Flags value in the registry to prevent the HTML Help ActiveX control from being instantiated in Internet Explorer

    Note If you use this workaround you must reset this registry change by removing the same Compatibility Flags registry value. You should do this after you have applied this security update to regain normal functionality supplied by the HTML Help ActiveX control.

    Impact of Workaround: Disabling the HTML Help ActiveX control prevents Internet Explorer from instantiating the control. This configuration causes program compatibility issues. Some examples of such issues are:

    • In Help and Support Center, the Index feature no longer works.
    • In HTML Help, features such as Related Topics and Shortcuts no longer work.
    • Features that are provided by the HTML Help control in Enterprise intranet programs no longer work.

FAQ for HTML Help ActiveX control Cross Domain Vulnerability - CAN-2004-1043:

What is the scope of the vulnerability?
This is a cross-domain vulnerability that could allow information disclosure or remote code execution. If a user is logged on with administrative privileges, 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 privileges. Users whose accounts are configured to have fewer privileges on the system could be less impacted than users who operate with administrative privileges.

What causes the vulnerability?
The way that the HTML Help ActiveX control processes cross domain requests.

What is HTML Help?
Microsoft HTML Help is the standard help system for the Windows platform. The HTML Help ActiveX control is a program that is used to insert help navigation and secondary window functionality into an HTML file. For more information about the HTML Help ActiveX control, see the product documentation.

What is the cross-domain security model that Internet Explorer implements?
One of the principal security functions of a browser is to make sure that browser windows that are under the control of different Web sites cannot interfere with each other or access each other's data, while allowing windows from the same site to interact with each other. To differentiate between cooperative and uncooperative browser windows, the concept of a "domain" has been created. A domain is a security boundary - any open windows within the same domain can interact with each other, but windows from different domains cannot. The cross-domain security model is the part of the security architecture that keeps windows from different domains from interfering with each other.

The simplest example of a domain is associated with Web sites. If you visit http://www.wingtiptoys.com, and it opens a window to http://www.wingtiptoys.com/security, the two windows can interact with each other because both sites belong to the same domain, http://www.wingtiptoys.com. However, if you visited http://www.wingtiptoys.com, and it opened a window to a different Web site, the cross-domain security model would help protect the two windows from each other. The concept goes even further. The file system on your local computer is also a domain. For example, http://www.wingtiptoys.com could open a window and show you a file on your hard disk. However, because your local file system is in a different domain from the Web site, the cross-domain security model should prevent the Web site from reading the file that is being displayed.

The Internet Explorer cross-domain security model can be configured by using the security zone settings in Internet Explorer.

What are Internet Explorer security zones?
Internet Explorer security zones are part of a system that divides online content into categories or zones that are based on the trustworthiness of the content. Specific Web domains can be assigned to a zone, depending on how much you trust the content of each domain. The zone then restricts the capabilities of the Web content, based on the zone's policy. By default, most Internet domains are treated as part of the Internet zone. By default, the policy of the Internet zone prevents scripts and other active code from accessing resources on the local system.

What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability could run malicious script code in the Local Machine security zone in Internet Explorer. This could allow an attacker to take complete control of the affected system.

How could an attacker exploit the vulnerability?
An attacker could exploit this vulnerability by creating a malicious Web page and persuading the user to visit the page. An attacker could also attempt to compromise a Web site to have it serve up a Web page with malicious content to try to exploit this vulnerability. When the user has visited the page, the attacker could access information from other Web sites, access local files on the system, or cause malicious script to run as the locally logged on user.

What systems are primarily at risk from the vulnerability?
This vulnerability requires that a user view Web sites for malicious action to occur. Therefore, any systems where Internet Explorer is used frequently, such as users’ workstations or terminal servers, are at the most risk from this vulnerability. Systems that are not typically used to visit Web sites, such as most server systems, are at a reduced risk.

Are Windows 98, Windows 98 Second Edition or Windows Millennium Edition critically affected by this vulnerability?
Yes. Windows 98, Windows 98 Second Edition, and Windows Millennium Edition are critically affected by this vulnerability. A Critical security update for these platforms is available and is provided as part of this security bulletin and can be downloaded from the Windows Update Web site. For more information about severity ratings, visit the following Web site.

Note Updates for localized versions of Microsoft Windows 98 and Microsoft Windows 98 Second Edition that are not supported by Windows Update are available for download at the following download locations:

What does the update do?
This update prevents the creation of an instance of the HTML Help Active X control in HTML content that is served from outside the Local Machine zone.

When this security bulletin was issued, had this vulnerability been publicly disclosed?
Yes. This vulnerability has been publicly disclosed. It has been assigned Common Vulnerability and Exposure number CAN-2004-1043.

When this security bulletin was issued, had Microsoft received any reports that this vulnerability was being exploited?
Yes. When the security bulletin was released, Microsoft had received information that this vulnerability was being exploited

Does applying this security update help protect customers from the code that has been published publicly that attempts to exploit this vulnerability?
Yes. This security update addresses the vulnerability that is currently being exploited. The vulnerability that has been addressed has been assigned the Common Vulnerability and Exposure number CAN-2004-1043.

Installation Platforms and Prerequisites:

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

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 Windows Server 2003 Service Pack 1.

Installation Information

This security update supports the following setup switches:

/help                 Displays the command line options

Setup Modes

/quiet                Quiet mode (no user interaction or display)

/passive            Unattended mode (progress bar only)

      /uninstall          Uninstalls the package

Restart Options

/norestart          Do not restart when installation is complete

/forcerestart      Restart after installation

Special Options

/l                        Lists installed Windows hotfixes or update packages

/o                       Overwrite OEM files without prompting

/n                       Do not backup files needed for uninstall

/f                        Force other programs to close when the computer shuts down

/extract             Extracts files without starting setup

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

Deployment Information

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

Windowsserver2003-kb890175-x86-enu /passive /quiet

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

Windowsserver2003-kb890175-x86-enu /norestart

For information about how to deploy this security update with Software Update Services, visit the Software Update Services Web site.

Restart Requirement

In some cases, 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 in use, this update will require a restart. If this 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%\$NTUninstallKB890175$\Spuninst folder. The Spuninst.exe utility supports the following setup switches:

/?: Show the list of installation switches.

/u: Use unattended mode.

/f: Force other programs to quit when the computer shuts down.

/z: Do not restart when the installation is complete.

/q: Use Quiet mode (no user interaction).

File Information

The English version of this update has the file attributes (or later) 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 Enterprise Edition, Windows Server 2003 Standard Edition, Windows Server 2003 Web Edition, and Windows Server 2003 Datacenter Edition:

File NameVersionDateTimeSizeFolder
Hhctrl.ocx5.2.3790.23319-Nov-200400:53512,512RTMGDR
Hhctrl.ocx5.2.3790.23319-Nov-200400:55512,512RTMQFE

Windows Server 2003 64-Bit Enterprise Edition and Windows Server 2003 64-Bit Datacenter Edition:

File NameVersionDateTimeSizeFolder
Hhctrl.ocx5.2.3790.23318-Nov-200422:441,526,784RTMGDR
Whhctrl.ocx5.2.3790.23319-Nov-200400:53512,512RTMGDR\WOW
Hhctrl.ocx5.2.3790.23318-Nov-200422:431,526,784RTMQFE
Whhctrl.ocx5.2.3790.23319-Nov-200400:55512,512RTMQFE WOW

Note When you install this security update on Windows Server 2003 or on Windows XP 64-Bit Edition Version 2003, the installer checks to see if any 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 files to your system. Otherwise, the installer copies the RTMGDR files to your system. For more information, see Microsoft Knowledge Base Article 824994.

Verifying Update Installation

  • Microsoft Baseline Security Analyzer

    To verify that a security update is installed on an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. This tool 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 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 the update installation. 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 Server 2003\SP1\KB890175\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 890175 security update into the Windows installation source files.

Windows XP (all versions)

Note For Windows XP 64-Bit Edition Version 2003, this security update is the same as the Windows Server 2003 64-Bit Edition security update.

Prerequisites
This security update requires the release version Windows XP Service Pack 1 (SP1) or Windows XP Service Pack 2. 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.

Installation Information

This security update supports the following setup switches:

/help                 Displays the command line options

Setup Modes

/quiet                Quiet mode (no user interaction or display)

/passive            Unattended mode (progress bar only)

      /uninstall          Uninstalls the package

Restart Options

/norestart          Do not restart when installation is complete

/forcerestart      Restart after installation

Special Options

/l                        Lists installed Windows hotfixes or update packages

/o                       Overwrite OEM files without prompting

/n                       Do not backup files needed for uninstall

/f                        Force other programs to close when the computer shuts down

/extract             Extracts files without starting setup

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

Deployment Information

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

Windowsxp-kb890175-x86-enu /passive /quiet

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

Windowsxp-kb890175-x86-enu /norestart

For more information about how to deploy this security update with Software Update Services, visit the Software Update Services Web site.

Restart Requirement

In some cases, 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 in use, this update will require a restart. If this 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 is located in the %Windir%\$NTUninstallKB890175$\Spuninst folder. The Spuninst.exe utility supports the following setup switches:

/?: Show the list of installation switches.

/u: Use unattended mode.

/f: Force other programs to quit when the computer shuts down.

/z: Do not restart when the installation is complete.

/q: Use Quiet mode (no user interaction).

File Information

The English version of this update has the file attributes (or later) 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
Hhctrl.ocx5.2.3790.128002-Dec-200418:35539,648SP2QFE
Hhctrl.ocx5.2.3790.128001-Dec-200405:19539,648SP2GDR
Hhctrl.ocx5.2.3790.23302-Dec-200419:15512,512SP1QFE

Windows XP 64-Bit Edition Service Pack 1:

File NameVersionDateTimeSizeFolder
Hhctrl.ocx5.2.3790.23319-Nov-200421:371,526,784SP1QFE
Whhctrl.ocx5.2.3790.23319-Nov-200421:34512,512SP1QFE\WOW

Windows XP 64-Bit Edition Version 2003:

File NameVersionDateTimeSizeFolder
Hhctrl.ocx5.2.3790.23318-Nov-200422:441,526,784RTMGDR
Whhctrl.ocx5.2.3790.23319-Nov-200400:53512,512RTMGDR\WOW
Hhctrl.ocx5.2.3790.23318-Nov-200422:431,526,784RTMQFE
Whhctrl.ocx5.2.3790.23319-Nov-200400:55512,512RTMQFE\WOW

Notes The Windows XP and Windows XP 64-Bit Edition Version 2003 versions of this security update are packaged as dual-mode packages, which contain files for both the original version of Windows XP Service Pack 1 (SP1) and Windows XP Service Pack 2 (SP2). For more information about dual-mode packages, see Microsoft Knowledge Base Article 328848.

When you install the Windows XP 64-Bit Edition Version 2003 security update, the installer checks to see if any 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 files to your system. Otherwise, the installer copies the RTMGDR files to your system. For more information, see Microsoft Knowledge Base Article 824994.

Verifying Update Installation

  • Microsoft Baseline Security Analyzer

    To verify that a security update is installed on an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. This tool 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 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 the update installation. 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\KB890175\Filelist

    For Windows XP 64-Bit Edition Version 2003:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Server 2003\SP1\KB890175\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 890175 security update into the Windows installation source files.

Windows 2000 (all versions)

Prerequisites
For Windows 2000, this security update requires Service Pack 3 (SP3) or Service Pack 4 (SP4).

The software that is listed has been tested to determine if the versions are affected. Other versions either no longer include security update support or may not be affected. To determine the support lifecycle 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 will be included in a future Update Rollup.

Installation Information

This security update supports the following setup switches:

/help                 Displays the command line options

Setup Modes

/quiet                Quiet mode (no user interaction or display)

/passive            Unattended mode (progress bar only)

      /uninstall          Uninstalls the package

Restart Options

/norestart          Do not restart when installation is complete

/forcerestart      Restart after installation

Special Options

/l                        Lists installed Windows hotfixes or update packages

/o                       Overwrite OEM files without prompting

/n                       Do not backup files needed for uninstall

/f                        Force other programs to close when the computer shuts down

/extract             Extracts files without starting setup

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

Deployment Information

To install the security update without any user intervention, use the following command at a command prompt for Windows 2000 Service Pack 3 and Windows 2000 Service Pack 4:

Windows2000-kb890175-x86-enu /passive /quiet

To install the security update without forcing the system to restart, use the following command at a command prompt for Windows 2000 Service Pack 3 and Windows 2000 Service Pack 4:

Windows2000-kb890175-x86-enu /norestart

For more information about how to deploy this security update with Software Update Services, visit the Software Update Services Web site.

Restart Requirement

In some cases, 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 in use, this update will require a restart. If this 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%\$NTUninstallKB890175$\Spuninst folder. The Spuninst.exe utility supports the following setup switches:

/?: Show the list of installation switches.

/u: Use unattended mode.

/f: Force other programs to quit when the computer shuts down.

/z: Do not restart when the installation is complete.

/q: Use Quiet mode (no user interaction).

File Information

The English version of this update has the file attributes (or later) 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.

Note Date, time, file name, or size information could change during installation. See the Verifying Update Installation section for details about how to verify an installation.

Windows 2000 Service Pack 3 and Windows 2000 Service Pack 4:

File NameVersionDateTimeSize
Hhctrl.ocx5.2.3790.23322-Nov-200406:20512,512

Verifying Update Installation

  • Microsoft Baseline Security Analyzer

    To verify that a security update is installed on an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. This tool 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 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 the update installation. 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\KB890175\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 890175 security update into the Windows installation source files.

Windows NT 4.0 (all versions)

Prerequisites
This security update requires Windows NT Server 4.0 Service Pack 6a (SP6a) or Windows NT Server 4.0 Terminal Server Edition Service Pack 6 (SP6).

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

For more information about obtaining the latest service pack, see Microsoft Knowledge Base Article 152734.

Installation Information

This security update supports the following setup switches:

   /q: Specifies quiet mode, or suppresses prompts, when files are being extracted. This switch does not suppress prompts when Windows Update Setup is running.

   /q:u : Specifies user-quiet mode, which presents some dialog boxes to the user.

   /q:a : Specifies administrator-quiet mode, which does not present any dialog boxes to the user.

   /c:<UNC location> Specifies the path and name of the Setup .inf or .exe file.

   /r:n : Never restarts the computer after installation.

   /r:a : Always restarts the computer after installation.

   /r:s : Restarts the computer after installation without prompting the user.

   /T:<directory path: Specifies the target folder for extracting files.

Note You can combine these switches into one command. For more information about the supported installation switches, see Microsoft Knowledge Base Article 197147.

Deployment Information

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

Windowsnt4-kb890175-x86-enu /q:a

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

Windowsnt4-kb890175-x86-enu /r:n

For more information about how to deploy this security update with Software Update Services, visit the Software Update Services Web site.

Restart Requirement

In some cases, this update does not require a restart. The installer stops the needed 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 in use, this update will require a restart. If this 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.

Or

Click Start, click Run, type "RunDll32 advpack.dll,LaunchINFSectionEx %Windir%\$NTUninstallQ890175$\890175UP.INF,updfiles,,64" (without the quotation marks), and then click OK.

File Information

The English version of this update has the file attributes (or later) 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.

Note Date, time, file name, or size information could change during installation. See the Verifying Update Installation section for details about how to verify an installation.

Windows NT Server 4.0 and Windows NT Server 4.0 Terminal Server Edition:

File NameVersionDateTimeSize
Hhctrl.ocx5.2.3790.23302-Dec-200419:15512,512

Verifying Update Installation

  • Microsoft Baseline Security Analyzer

    To verify that a security update is installed on an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. This tool 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 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 the update installation. 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\Windows NT\CurrentVersion\Hotfix\Q890175

    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 890175 security update into the Windows installation source files.

Other Information

Obtaining Other Security Updates:

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

  • Security updates are available from the Microsoft Download Center. You can find them most easily by doing a keyword search for "security_patch."
  • Updates for consumer platforms are available from the Microsoft Update Web site.

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 this security update with Software Update Services, visit the Software 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 to 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 and the Microsoft Office Detection 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, see 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 (January 11, 2005): Bulletin published

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