Security Bulletin
Microsoft Security Bulletin MS06-055 - Critical
Vulnerability in Vector Markup Language Could Allow Remote Code Execution (925486)
Published: September 26, 2006 | Updated: October 05, 2006
Version: 1.1
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: This bulletin replaces a prior security update. See the frequently asked questions (FAQ) section of this bulletin for the complete list.
Caveats: None
Tested Software and Security Update Download Locations:
Affected Software:
- Microsoft Windows 2000 Service Pack 4
- Microsoft Windows XP Service Pack 1 — Download the update
- Microsoft Windows XP Service Pack 2 — Download the update
- Microsoft Windows XP Professional x64 Edition — Download the update
- Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1 — Download the update
- Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft Windows Server 2003 with SP1 for Itanium-based Systems — Download the update
- Microsoft Windows Server 2003 x64 Edition — Download the update
Tested Microsoft Windows Components:
Affected Components:
- Internet Explorer 5.01 Service Pack 4 on Microsoft Windows 2000 Service Pack 4 — Download the update
- Internet Explorer 6 Service Pack 1 on Microsoft Windows 2000 Service Pack 4 — Download the update
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.
Note The security updates for Microsoft Windows Server 2003, Windows Server 2003 Service Pack 1, and Windows Server 2003 x64 Edition also apply to Windows Server 2003 R2.
General Information
Executive Summary
Executive Summary:
This update resolves a public vulnerability as well as additional issues discovered through internal investigations. The vulnerability is documented in the "Vulnerability Details" section of this bulletin.
If a user is logged on with administrative user rights, an attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
We recommend that customers apply the update immediately.
Severity Ratings and Vulnerability Identifiers:
| Vulnerability Identifiers | Impact of Vulnerability | Windows 2000 Service Pack 4 | Windows XP Service Pack 1 | Windows XP Service Pack 2 | Windows Server 2003 | Windows Server 2003 Service Pack 1 |
|---|---|---|---|---|---|---|
| VML Buffer Overrun Vulnerability - CVE-2006-4868 | Remote Code Execution | Critical | Critical | Critical | Critical | Moderate |
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 By default, Internet Explorer on Windows Server 2003 runs in a restricted mode that is known as Enhanced Security Configuration. See the FAQ section for this security update for more information about Internet Explorer Enhanced Security Configuration.
Note The severity ratings for non-x86 operating system versions map to the x86 operating systems versions as follows:
- The Windows XP Professional x64 Edition severity rating is the same as the Windows Server XP Service Pack 2.
- The Windows Server 2003 for Itanium-based Systems severity rating is the same as the Windows Server 2003 severity rating.
- The 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 Windows Server 2003 x64 Edition severity rating is the same as the Windows Server 2003 Service Pack 1 severity rating.
Frequently Asked Questions (FAQ) Related to This Security Update
Can I deploy this security update after I have applied the workarounds provided in Microsoft Security Advisory 925568?
If the workaround “Modify the Access Control List on Vgx.dll to be more restrictive” has been applied to systems, the security updates provided with this security bulletin may not install correctly. See the Workarounds for VML Buffer Overrun Vulnerability - CVE-2006-4868 section in this security bulletin for instructions on how to revert this workaround before applying this security update.
Are there any additional issues related to the workarounds provided in Microsoft Security Advisory 925568 and this Bulletin?
If the “Modify the Access Control List on VGX.DLL to be more restrictive” workaround is applied, software that redistributes vgx.dll may fail to install. An example of this is Internet Explorer 7 Release Candidate 1 and subsequent versions of Internet Explorer 7. Before this software can be installed, the workaround must be reverted to the previous ACL configuration for vgx.dll.
What updates does this release replace?
This security update replaces a prior security update. The security bulletin ID and affected operating systems are listed in the following table.
| Bulletin ID | Windows 2000 Service Pack 4 | Windows 2000 Service Pack 4 with Internet Explorer 6 Service Pack 1 Installed | Windows XP Service Pack 1 | Windows XP Service Pack 2 | Windows Server 2003 | Windows Server 2003 Service Pack 1 |
|---|---|---|---|---|---|---|
| MS04-028 | Not Replaced | Replaced | Not Replaced | Not Replaced | Not Replaced | Not Replaced |
Why are the security updates for Windows XP Service Pack 1 and Windows 2000 Service Pack 4 labeled as Internet Explorer Updates?
While this is a security update for Windows, the files are serviced from the Internet Explorer code base on these platforms. As such, it follows Internet Explorer standards for packaging as well as detection and deployment.
What is the 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 specially crafted Web content on a server. Internet Explorer Enhanced Security Configuration reduces this risk by modifying many security-related settings. This includes the settings on the Security tab 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), 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.
The Internet Explorer Enhanced Security Configuration does not provide mitigation for applications like Microsoft Outlook which can be installed on Windows Server 2003.
Extended security update support for Microsoft Windows 98, Windows 98 Second Edition, or Windows Millennium Edition ended on July 11, 2006. I am still using one of these operating systems; what should I do?
Windows 98, Windows 98 Second Edition, and Windows Millennium Edition have reached the end of their support 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.
Extended security update support for Microsoft Windows NT Workstation 4.0 Service Pack 6a and Windows 2000 Service Pack 2 ended on June 30, 2004. Extended security update support for Microsoft Windows NT Server 4.0 Service Pack 6a ended on December 31, 2004. Extended security update support for Microsoft Windows 2000 Service Pack 3 ended on June 30, 2005. I am still using one of these operating systems; what should I do?
Windows NT Workstation 4.0 Service Pack 6a, Windows NT Server 4.0 Service Pack 6a, Windows 2000 Service Pack 2, and Windows 2000 Service Pack 3 have reached the end of their support life cycles. It should be a priority for customers who have these operating system versions to migrate to supported versions to prevent potential exposure to vulnerabilities. For more information about the Windows Product Lifecycle, visit the following Microsoft Support Lifecycle Web site. For more information about the extended security update support period for these operating system versions, visit the Microsoft Product Support Services Web site.
Customers who require custom support for these products must contact their Microsoft account team representative, their Technical Account Manager, or the appropriate Microsoft partner representative for custom support options. Customers without an Alliance, Premier, or Authorized Contract can contact their local Microsoft sales office. For contact information, visit the Microsoft Worldwide Information Web site, select the country, and then click Go to see a list of telephone numbers. When you call, ask to speak with the local Premier Support sales manager. For more information, see the Windows Operating System Product Support Lifecycle FAQ.
Can I use the Microsoft Baseline Security Analyzer (MBSA) to determine whether this update is required?
The following table provides the MBSA detection summary for this security update.
| Product | MBSA 1.2.1 | Enterprise Scanning Tool (EST) | MBSA 2.0 |
|---|---|---|---|
| Microsoft Windows 2000 Service Pack 4 | No | Yes | Yes |
| Microsoft Windows XP Service Pack 1 and Microsoft Windows XP Service Pack 2 | No | Yes | Yes |
| Microsoft Windows XP Professional x64 Edition | No | No | Yes |
| Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1 | No | Yes | Yes |
| Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft Windows Server 2003 with Service Pack 1 for Itanium-based Systems | No | No | Yes |
| Microsoft Windows Server 2003 x64 Edition family | No | No | Yes |
For more information about MBSA, visit the MBSA Web site. For more information about the programs that Microsoft Update and MBSA 2.0 currently do not detect, see Microsoft Knowledge Base Article 895660.
For more detailed information, see Microsoft Knowledge Base Article 910723.
What is the Enterprise Update Scan Tool (EST)?
As part of an ongoing commitment to provide detection tools for bulletin-class security updates, Microsoft delivers a stand-alone detection tool whenever the Microsoft Baseline Security Analyzer (MBSA) and the Office Detection Tool (ODT) cannot detect whether the update is required for an MSRC release cycle. This stand-alone tool is called the Enterprise Update Scan Tool (EST) and is designed for enterprise administrators. When a version of the Enterprise Update Scan Tool is created for a specific bulletin, customers can run the tool from a command line interface (CLI) and view the results of the XML output file. To help customers better utilize the tool, detailed documentation will be provided with the tool. There is also a version of the tool that offers an integrated experience for SMS administrators.
Can I use a version of the Enterprise Update Scan Tool (EST) to determine whether this update is required?
Yes. Microsoft has created a version of the EST that will determine if you have to apply this update. For download links and more information about the version of the EST that is being released this month, see the following Microsoft Web site. SMS customers should review the "Can I use Systems Management Server (SMS) to determine whether this update is required?" FAQ for more information about SMS and EST.
Can I use Systems Management Server (SMS) to determine whether this update is required?
The following table provides the SMS detection summary for this security update.
| Product | SMS 2.0 | SMS 2003 |
|---|---|---|
| Microsoft Windows 2000 Service Pack 4 | Yes (With EST) | Yes |
| Microsoft Windows XP Service Pack 1 and Microsoft Windows XP Service Pack 2 | Yes (With EST) | Yes |
| Microsoft Windows XP Professional x64 Edition | No | Yes |
| Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1 | Yes (With EST) | Yes |
| Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft Windows Server 2003 with Service Pack 1 for Itanium-based Systems | No | Yes |
| Microsoft Windows Server 2003 x64 Edition family | No | Yes |
SMS 2.0 and SMS 2003 Software Update Services (SUS) Feature Pack can use MBSA 1.2.1 for detection and therefore have the same limitation that is listed earlier in this bulletin related to programs that MBSA 1.2.1 does not detect.
For SMS 2.0, the SMS SUS Feature Pack, which includes the Security Update Inventory Tool (SUIT), can be used by SMS to detect security updates. SMS SUIT uses the MBSA 1.2.1 engine for detection. For more information about SUIT, visit the following Microsoft Web site. For more information about the limitations of SUIT, see Microsoft Knowledge Base Article 306460. The SMS SUS Feature Pack also includes the Microsoft Office Inventory Tool to detect required updates for Microsoft Office applications.
For SMS 2003, the SMS 2003 Inventory Tool for Microsoft Updates (ITMU) can be used by SMS to detect security updates that are offered by Microsoft Update and that are supported by Windows Server Update Services. For more information about the SMS 2003 ITMU, visit the following Microsoft Web site. SMS 2003 can also use the Microsoft Office Inventory Tool to detect required updates for Microsoft Office applications.
For more information about SMS, visit the SMS Web site.
For more detailed information, see Microsoft Knowledge Base Article 910723.
Vulnerability Details
VML Buffer Overrun Vulnerability - CVE-2006-4868:
A remote code execution vulnerability exists in the Vector Markup Language (VML) implementation in Microsoft Windows. An attacker could exploit the vulnerability by constructing a specially crafted Web page or HTML e-mail that could potentially allow remote code execution if a user visited the Web page or viewed the message. An attacker who successfully exploited this vulnerability could take complete control of an affected system.
Mitigating Factors for VML Buffer Overrun Vulnerability - CVE-2006-4868:
- In a Web-based attack scenario, an attacker could host a Web site that contains a Web page that is used to exploit this vulnerability. In addition, compromised Web sites and Web sites that accept or host user-provided content or advertisements could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these Web sites. Instead, an attacker would have to persuade users to visit the Web site, typically by getting them to click a link in an e-mail message or instant messenger message that takes users to the attacker's Web site.
- In an e-mail based attack of this exploit, customers who read e-mail in plain text are at less risk from this vulnerability. Instead users would have to either click on a link that would take them to a malicious Web site or open an attachment to be at risk from this vulnerability.
- In an e-mail based attack of this exploit, customers who read e-mail using Outlook Express on Windows XP Service Pack 2 and Windows Server 2003 Service Pack 1, are at less risk from this vulnerability because Binary and Script Behaviors is disabled by default in the Restricted sites zone.
- An attacker who successfully exploited this vulnerability could gain the same user rights as the local user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
- 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 in Windows Server 2003 Service Pack 1 because Binary and Script Behaviors is disabled by default in the Internet zone.
- 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 in the e-mail vector for Outlook Express because reading e-mail messages in plain text is the default configuration. See the FAQ section of this security update for more information about Internet Explorer Enhanced Security Configuration.
Workarounds for VML Buffer Overrun Vulnerability - CVE-2006-4868:
Microsoft has tested the following workarounds. Although 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.
Unregister VGX.DLL
- Click Start, click Run, type "%SystemRoot%\System32\regsvr32.exe" -u "%CommonProgramFiles%\Microsoft Shared\VGX\vgx.dll", and then click OK.
- A dialog box appears to confirm that the un-registration process has succeeded. Click OK to close the dialog box.
Impact of Workaround: Applications that render VML will no longer do so once vgx.dll has been unregistered.
This security update does not automatically re-register vgx.dll so any applications that render VML will no longer do so until vgx.dll has been re-registered. To re-register vgx.dll follow these steps:
- Click Start, click Run, type "%SystemRoot%\System32\regsvr32.exe" "%CommonProgramFiles%\Microsoft Shared\VGX\vgx.dll", and then click OK.
- A dialog box appears to confirm that the registration process has succeeded. Click OK to close the dialog box.
Modify the Access Control List on VGX.DLL to be more restrictive
Applying this workaround may cause the installation of security updates provided with this security bulletin to fail:To modify the Access Control List (ACL) on vgx.dll to be more restrictive, follow these steps:
Click Start, click Run, type "cmd" (without the quotation marks), and then click OK.
Type the following command at a command prompt make a note of the current ACL’s that are on the file (including inheritance settings) for future reference to undo this modification:
cacls "%CommonProgramFiles%\Microsoft Shared\VGX\vgx.dll"
Type the following command at a command prompt to deny the ‘everyone’ group access to this file:
echo y| cacls "%CommonProgramFiles%\Microsoft Shared\VGX\vgx.dll" /d everyone
Close Internet Explorer, and reopen it for the changes to take effect.
Impact of Workaround: Applications and Web sites that render VML may no longer display or function correctly.
Before this security update can be installed, this workaround must be reverted to the previous ACL configuration for vgx.dll. To revert to the previous vgx.dll ACL’s follow these steps:
Click Start, click Run, type "cmd" (without the quotation marks), and then click OK.
To revert to the previous ACL configuration for vgx.dll, type the following command and replace the ACL on vgx.dll with the ACL’s it previously had, which were recorded in step 2 of this workaround The command line to do so will vary depending on your environment:
echo y| cacls "%CommonProgramFiles%\Microsoft Shared\VGX\vgx.dll" /g original ACL’s
Close Internet Explorer, and reopen it for the changes to take effect.
Note If this workaround is applied, software that redistributes vgx.dll may fail to install. An example of this is Internet Explorer 7 Release Candidate 1 and subsequent versions of Internet Explorer 7. Before this software can be installed, this workaround must be reverted to the previous ACL configuration for vgx.dll.
Note Customers wishing to revert to the default installed ACL configuration for vgx.dll, type the following:
- For Windows 2000 Service Pack 4:
echo y| cacls "%CommonProgramFiles%\Microsoft Shared\VGX\vgx.dll" /P BUILTIN\Users:R "BUILTIN\Power Users:C" BUILTIN\Administrators:F "NT AUTHORITY\SYSTEM:F" - For Windows XP Service Pack 1 and Windows XP Service Pack 2:
echo y| cacls "%CommonProgramFiles%\Microsoft Shared\VGX\vgx.dll" /P BUILTIN\Users:R "BUILTIN\Power Users:C" BUILTIN\Administrators:F "NT AUTHORITY\SYSTEM:F" - For Windows 2003 and Windows 2003 Service Pack 1:
echo y| cacls "%CommonProgramFiles%\Microsoft Shared\VGX\vgx.dll" /P BUILTIN\Users:R "BUILTIN\Power Users:C" BUILTIN\Administrators:F "NT AUTHORITY\SYSTEM:F" “NT AUTHORITY\TERMINAL SERVER USER:C”
Configure Internet Explorer 6 for Microsoft Windows XP Service Pack 2 to disable Binary and Script Behaviors in the Internet and Local Intranet security zone
You can help protect against this vulnerability by changing your settings to disable binary and script behaviors in the Internet and Local intranet security zone. To do this, follow these steps:- In Internet Explorer, click Internet Options on the Tools menu.
- Click the Security tab.
- Click Internet, and then click Custom Level.
- Under Settings, in the ActiveX controls and plug-ins section, under Binary and Script Behaviors, click Disable, and then click OK.
- Click Local intranet, and then click Custom Level.
- Under Settings, in the ActiveX controls and plug-ins section, under Binary and Script Behaviors, click Disable, and then click OK.
- Click OK two times to return to Internet Explorer.
Impact of Workaround: Disabling binary and script behaviors in the Internet and Local intranet security zones may cause some Web sites that rely on VML to not function correctly.
Read e-mail messages in plain text format if you are using Outlook 2002 or a later version, or Outlook Express 6 SP1 or a later version, to help protect yourself from the HTML e-mail attack vector
Microsoft Outlook 2002 users who have applied Office XP Service Pack 1 or a later version and Microsoft Outlook Express 6 users who have applied Internet Explorer 6 Service Pack 1 or a later version 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 how to enable 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.
Block VML Vulnerability Traffic with ISA Server
Customers with Microsoft Internet Security and Acceleration (ISA) Server 2004 or 2006 may also block malicious traffic intended to exploit this vulnerability. For more information about how to enable this setting in ISA Server, see Learn How Your ISA Server Helps Block VML Vulnerability Traffic.
FAQ for VML Buffer Overrun Vulnerability - CVE-2006-4868:
What is the scope of the vulnerability?
This is a remote code execution vulnerability in the Vector Markup Language (VML) implementation in Microsoft Windows. An attacker could exploit the vulnerability by constructing a specially crafted Web page or HTML e-mail that could potentially allow remote code execution if a user visited the Web page or viewed the message.
If a user were logged on with administrative user rights, an attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less affected than users who operate with administrative user rights.
What causes the vulnerability?
An unchecked buffer in the VML implementation in Microsoft Windows.
What is VML?
Vector Markup Language (VML) is an XML-based exchange, editing, and delivery format for high-quality vector graphics on the Web that meets the needs of both productivity users and graphic design professionals. XML is a simple, flexible, and open text-based language that complements HTML. For more information on the VML, see the product documentation.
What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability could take complete control of the affected system.
How could an attacker exploit the vulnerability?
In a Web-based attack scenario, an attacker could host a Web site that contains a Web page that is used to exploit this vulnerability. In addition, compromised Web sites and Web sites that accept or host user-provided content or advertisements could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these Web sites. Instead, an attacker would have to persuade users to visit the Web site, typically by getting them to click a link in an e-mail message or instant messenger message that takes users to the attacker's Web site.
In an e-mail based attack of this exploit, customers who read e-mail in plain text are at less risk from this vulnerability. Instead users would have to either click on a link that would take them to a malicious Web site or open an attachment to be at risk from this vulnerability.
Customers who read e-mail in plain text would also be at less risk when using the Outlook or Outlook Express preview panes.
What systems are primarily at risk from the vulnerability?
This vulnerability requires that a user is logged on and reading e-mail messages or is visiting Web sites for any malicious action to occur. Therefore, any systems where e-mail messages are read or where Internet Explorer is used frequently, such as 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.
What is the 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 specially crafted Web content on a server. Internet Explorer Enhanced Security Configuration reduces this risk by modifying many security-related settings. This includes the settings on the Security tab 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), 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.
For more information regarding Internet Explorer Enhanced Security Configuration, see the guide, Managing Internet Explorer Enhanced Security Configuration, at the following Web site.
What does the update do?
The update removes the vulnerability by modifying the way that Windows validates the length of data before storing it in the allocated buffer.
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 CVE-2006-4868.
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 CVE-2006-4868.
Security Update Information
Affected Software:
For information about the specific security update for your affected software, click the appropriate link:
Internet Explorer 6 Service Pack 1 for Windows XP Service Pack 1 (all versions)
Prerequisites To install the Internet Explorer 6 Service Pack 1 (SP1) version of this update, you must be running Internet Explorer 6 SP1 (version 6.00.2800.1106) on Microsoft Windows XP Service Pack 1.
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.
| Switch | Description |
|---|---|
| /help | Displays the command-line options |
| Setup Modes | |
| /passive | Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds. |
| /quiet | Quiet mode. This is the same as unattended mode, but no status or error messages are displayed. |
| Restart Options | |
| /norestart | Does not restart when installation has completed |
| /forcerestart | Restarts the computer after installation and force other applications to close at shutdown without saving open files first. |
| /warnrestart[:x] | Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch. |
| /promptrestart | 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 |
| /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 XP Service Pack 1:
IE6.0sp1-KB925486-WindowsXP-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 KB925486-IE6SP1-20060918.120000.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:
IE6.0sp1-KB925486-WindowsXP-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.
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
In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. To help reduce the chance that a reboot will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart your computer, see Microsoft Knowledge Base Article 887012.
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%\$NTUninstallKB925486-IE6SP1-20060918.120000$\Spuninst folder.
| Switch | Description |
|---|---|
| /help | Displays the command-line options |
| Setup Modes | |
| /passive | Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds. |
| /quiet | Quiet mode. This is the same as unattended mode, but no status or error messages are displayed. |
| Restart Options | |
| /norestart | Does not restart when installation has completed. |
| /forcerestart | Restarts the computer after installation and force other applications to close at shutdown without saving open files first. |
| /warnrestart[:x] | Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch. |
| /promptrestart | 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:
| File Name | Version | Date | Time | Size |
|---|---|---|---|---|
| vgx.dll | 6.0.2800.1580 | 18-Sep-2006 | 21:20 | 851,456 |
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.
Verifying that the Update Has Been Applied
Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you can use the Microsoft Baseline Security Analyzer (MBSA) tool. MBSA allows administrators to scan local and remote systems for missing security updates and for common security misconfigurations. For more information about MBSA, visit the Microsoft Baseline Security Analyzer Web site.File Version Verification
Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. If they are, see your product documentation to complete these steps.
Click Start, and then click Search.
In the Search Results pane, click All files and folders under Search Companion.
In the All or part of the file name box, type a file name from the appropriate file information table, and then click Search.
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.
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\Internet Explorer 6\SP1\KB925486-IE6SP1-20060918.120000\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 925486 security update into the Windows installation source files.
Internet Explorer 6 Service Pack 1 for Windows 2000 Service Pack 4 (all versions)
Prerequisites To install the Internet Explorer 6 Service Pack 1 (SP1) version of this update, you must be running Internet Explorer 6 SP1 (version 6.00.2800.1106) on one of the following versions of Windows:
- Microsoft Windows 2000 Service Pack 4
- Microsoft 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.
| Switch | Description |
|---|---|
| /help | Displays the command-line options |
| Setup Modes | |
| /passive | Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds. |
| /quiet | Quiet mode. This is the same as unattended mode, but no status or error messages are displayed. |
| Restart Options | |
| /norestart | Does not restart when installation has completed |
| /forcerestart | Restarts the computer after installation and force other applications to close at shutdown without saving open files first. |
| /warnrestart[:x] | Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch. |
| /promptrestart | 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 |
| /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 XP Service Pack 1:
IE6.0sp1-KB925486-Windows2000-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 KB925486-IE6SP1-20060918.120000.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:
IE6.0sp1-KB925486-Windows2000-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
In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. To help reduce the chance that a reboot will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart your computer, see Microsoft Knowledge Base Article 887012.
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%\$NTUninstallKB925486-IE6SP1-20060918.120000$\Spuninst folder.
| Switch | Description |
|---|---|
| /help | Displays the command-line options |
| Setup Modes | |
| /passive | Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds. |
| /quiet | Quiet mode. This is the same as unattended mode, but no status or error messages are displayed. |
| Restart Options | |
| /norestart | Does not restart when installation has completed. |
| /forcerestart | Restarts the computer after installation and force other applications to close at shutdown without saving open files first. |
| /warnrestart[:x] | Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch. |
| /promptrestart | 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 Service Pack 4 and Small Business Server 2000:
| File Name | Version | Date | Time | Size |
|---|---|---|---|---|
| vgx.dll | 6.0.2800.1580 | 18-Sep-2006 | 21:23 | 2,286,080 |
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.
Verifying that the Update Has Been Applied
Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you can use the Microsoft Baseline Security Analyzer (MBSA) tool. MBSA allows administrators to scan local and remote systems for missing security updates and for common security misconfigurations. For more information about MBSA, visit the Microsoft Baseline Security Analyzer Web site.File Version Verification
Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. If they are, see your product documentation to complete these steps.
- Click Start, and then click Search.
- In the Search Results pane, click All files and folders under Search Companion.
- In the All or part of the file name box, type a file name from the appropriate file information table, and then click Search.
- 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.
- 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\Internet Explorer 6\SP1\KB925486-IE6SP1-20060918.120000\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 925486 security update into the Windows installation source files.
Internet Explorer 5.01 Service Pack 4 on Windows 2000 (all versions)
Prerequisites For Windows 2000, this security update requires Service Pack 4 (SP4). For Small Business Server 2000, this security update requires Small Business Server 2000 Service Pack 1a (SP1a) or Small Business Server 2000 running with Windows 2000 Server Service Pack 4 (SP4).
The software that is listed has been tested to determine whether the versions are affected. Other versions either no longer include security update support or may not be affected. To determine the support life cycle for your product and version, visit the Microsoft Support Lifecycle Web site.
For more information about how to obtain the latest service pack, see Microsoft Knowledge Base Article 260910.
Inclusion in Future Service Packs: The update for this issue may be included in a future Update Rollup.
Installation Information
This security update supports the following setup switches.
| Switch | Description |
|---|---|
| /help | Displays the command-line options |
| Setup Modes | |
| /passive | Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds. |
| /quiet | Quiet mode. This is the same as unattended mode, but no status or error messages are displayed. |
| Restart Options | |
| /norestart | Does not restart when installation has completed. |
| /forcerestart | Restarts the computer after installation and force other applications to close at shutdown without saving open files first. |
| /warnrestart[:x] | Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch. |
| /promptrestart | 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 |
| /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:
IE5.01sp4-KB925486-Windows2000sp4-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 KB925486-IE501SP4-20060918.174951.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:
IE5.01sp4-KB925486-Windows2000sp4-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
In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. To help reduce the chance that a reboot will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart your computer, see Microsoft Knowledge Base Article 887012.
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%\$NTUninstallKB925486-IE501SP4-20060918.174951$\Spuninst folder.
| Switch | Description |
|---|---|
| /help | Displays the command-line options |
| Setup Modes | |
| /passive | Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds. |
| /quiet | Quiet mode. This is the same as unattended mode, but no status or error messages are displayed. |
| Restart Options | |
| /norestart | Does not restart when installation has completed. |
| /forcerestart | Restarts the computer after installation and force other applications to close at shutdown without saving open files first. |
| /warnrestart[:x] | Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch. |
| /promptrestart | 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 Service Pack 4 and Small Business Server 2000:
| File Name | Version | Date | Time | Size |
|---|---|---|---|---|
| vgx.dll | 5.0.3845.1800 | 18-Sep-2006 | 23:20 | 1,757,256 |
Verifying that the Update Has Been Applied
Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you can use the Microsoft Baseline Security Analyzer (MBSA) tool. MBSA allows administrators to scan local and remote systems for missing security updates and for common security misconfigurations. For more information about MBSA, visit the Microsoft Baseline Security Analyzer Web site.File Version Verification
Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. If they are, see your product documentation to complete these steps.
- Click Start, and then click Search.
- In the Search Results pane, click All files and folders under Search Companion.
- In the All or part of the file name box, type a file name from the appropriate file information table, and then click Search.
- 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.
- 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\Internet Explorer 5.01\SP4\KB925486-IE501SP4-20060918.174951\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 925486 security update into the Windows installation source files.
Windows XP Service Pack 2 (all versions) and Windows XP Professional x64
Prerequisites This security update requires Microsoft Windows XP Service Pack 2. For more information, see Microsoft Knowledge Base Article 322389.
Note For Windows XP Professional x64, this security update is the same as the Windows Server 2003 x64 Edition security update.
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.
| Switch | Description |
|---|---|
| /help | Displays the command-line options. |
| Setup Modes | |
| /passive | Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds. |
| /quiet | Quiet mode. This is the same as unattended mode, but no status or error messages are displayed. |
| Restart Options | |
| /norestart | Does not restart when installation has completed. |
| /forcerestart | Restarts the computer after installation and forces other applications to close at shutdown without saving open files first. |
| /warnrestart[:x] | Displays 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 uninstallation. |
| /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-kb925486-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 KB925486.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-kb925486-x86-enu /norestart
For information about how to deploy this security update by using Software Update Services, visit the Software Update Services Web site. For more information about how to deploy this security update using Windows Server Update Services, visit the Windows Server Update Services Web site. This security update will also be available through the Microsoft Update Web site.
Restart Requirement
This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. To help reduce the chance that a restart will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart your computer, see Microsoft Knowledge Base Article 887012.
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%\$NTUninstallKB925486$\Spuninst folder.
| Switch | Description |
|---|---|
| /help | Displays the command-line options. |
| Setup Modes | |
| /passive | Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds. |
| /quiet | Quiet mode. This is the same as unattended mode, but no status or error messages are displayed. |
| Restart Options | |
| /norestart | Does not restart when installation has completed. |
| /forcerestart | Restarts the computer after installation and forces other applications to close at shutdown without saving open files first. |
| /warnrestart[:x] | Displays 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 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 Name | Version | Date | Time | Size | Folder |
|---|---|---|---|---|---|
| Vgx.dll | 6.0.2900.2997 | 18-Sep-2006 | 14:15 | 851,968 | SP2GDR |
| Vgx.dll | 6.0.2900.2997 | 18-Sep-2006 | 14:28 | 851,968 | SP2QFE |
Windows XP Professional x64:
| File Name | Version | Date | Time | Size | CPU | Folder |
|---|---|---|---|---|---|---|
| Vgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 13:52 | 1,427,968 | x64 | SP1GDR |
| Wvgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 13:52 | 852,992 | x86 | SP1GDR\WOW |
| Vgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 13:32 | 1,427,968 | x64 | SP1QFE |
| Wvgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 13:32 | 852,992 | x86 | SP1QFE\WOW |
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.
Verifying that the Update Has Been Applied
Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the frequently asked question, “Can I use the Microsoft Baseline Security Analyzer (MBSA) to determine whether this update is required?” in the section, Frequently Asked Questions (FAQ) Related to This Security Update, earlier in this bulletin.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.
- Click Start, and then click Search.
- In the Search Results pane, click All files and folders under Search Companion.
- In the All or part of the file name box, type a file name from the appropriate file information table, and then click Search.
- 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.
- 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 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\KB925486\Filelist
For Windows XP Professional x64 Edition:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP Version 2003\SP2\KB925486\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 925486 security update into the Windows installation source files.
Windows Server 2003 (all versions)
Prerequisites This security update requires Windows Server 2003 or Windows Server 2003 Service Pack 1.
Note The security updates for Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1 also apply to Microsoft Windows Server 2003 R2.
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.
| Switch | Description |
|---|---|
| /help | Displays the command-line options. |
| Setup Modes | |
| /passive | Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds. |
| /quiet | Quiet mode. This is the same as unattended mode, but no status or error messages are displayed. |
| Restart Options | |
| /norestart | Does not restart when installation has completed. |
| /forcerestart | Restarts the computer after installation and forces other applications to close at shutdown without saving open files first. |
| /warnrestart[:x] | Displays 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 uninstallation. |
| /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-kb925486-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 KB925486.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-kb925486-x86-enu /norestart
For information about how to deploy this security update by using Software Update Services, visit the Software Update Services Web site. For more information about how to deploy this security update using Windows Server Update Services, visit the Windows Server Update Services Web site. This security update will also be available through the Microsoft Update Web site.
Restart Requirement
This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. To help reduce the chance that a restart will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart your computer, see Microsoft Knowledge Base Article 887012.
This security update does not support HotPatching. For more information about HotPatching, see Microsoft Knowledge Base Article 897341.
Note Not all security updates support HotPatching, and some security updates that support HotPatching might require that you restart the server after you install the security update. HotPatching is only supported if the files being replaced by the security update are General Distribution Release (GDR) files. HotPatching is not supported if you have previously installed a hotfix to update one of the files included in the security update. For more information about this behavior, see Microsoft Knowledge Base Article 897341and Microsoft Knowledge Base Article 824994.
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%\$NTUninstallKB925486$\Spuninst folder.
| Switch | Description |
|---|---|
| /help | Displays the command-line options. |
| Setup Modes | |
| /passive | Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds. |
| /quiet | Quiet mode. This is the same as unattended mode, but no status or error messages are displayed. |
| Restart Options | |
| /norestart | Does not restart when installation has completed. |
| /forcerestart | Restarts the computer after installation and forces other applications to close at shutdown without saving open files first. |
| /warnrestart[:x] | Displays 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; Windows Server 2003, Datacenter Edition with SP1; Windows Server 2003 R2, Web Edition; Windows Server 2003 R2, Standard Edition; Windows Server 2003 R2, Datacenter Edition; Windows Server 2003 R2, Enterprise Edition; Windows Small Business Server 2003 R2:
| File Name | Version | Date | Time | Size | CPU |
|---|---|---|---|---|---|
| Vgx.dll | 6.0.3790.593 | 18-Sep-2006 | 10:16 | 813,056 | x86 |
| Vgx.dll | 6.0.3790.593 | 18-Sep-2006 | 10:06 | 813,056 | x86 |
| Vgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 10:23 | 852,992 | x86 |
| Vgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 13:12 | 852,992 | x86 |
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 Name | Version | Date | Time | Size | CPU | Folder |
|---|---|---|---|---|---|---|
| Vgx.dll | 6.0.3790.593 | 18-Sep-2006 | 13:30 | 2,187,264 | IA-64 | RTMGDR |
| Wvgx.dll | 6.0.3790.593 | 18-Sep-2006 | 13:30 | 813,056 | x86 | RTMGDR\WOW |
| Vgx.dll | 6.0.3790.593 | 18-Sep-2006 | 13:32 | 2,187,264 | IA-64 | RTMQFE |
| Wvgx.dll | 6.0.3790.593 | 18-Sep-2006 | 13:32 | 813,056 | x86 | RTMQFE\WOW |
| Vgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 14:23 | 2,424,320 | IA-64 | SP1GDR |
| Wvgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 14:23 | 852,992 | x86 | SP1GDR\WOW |
| Vgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 13:32 | 2,424,320 | IA-64 | SP1QFE |
| Wvgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 13:32 | 852,992 | x86 | SP1QFE\WOW |
Windows Server 2003, Standard x64 Edition; Windows Server 2003, Enterprise x64 Edition; and Windows Server 2003, Datacenter x64 Edition; Windows Server 2003 R2, Standard x64 Edition; Windows Server 2003 R2, Enterprise x64 Edition; and Windows Server 2003 R2, Datacenter x64 Edition:
| File Name | Version | Date | Time | Size | CPU | Folder |
|---|---|---|---|---|---|---|
| Vgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 13:52 | 1,427,968 | x64 | SP1GDR |
| Wvgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 13:52 | 852,992 | x86 | SP1GDR\WOW |
| Vgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 13:32 | 1,427,968 | x64 | SP1QFE |
| Wvgx.dll | 6.0.3790.2794 | 18-Sep-2006 | 13:32 | 852,992 | x86 | SP1QFE\WOW |
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.
Verifying that the Update Has Been Applied
Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the frequently asked question, “Can I use the Microsoft Baseline Security Analyzer (MBSA) to determine whether this update is required?” in the section, Frequently Asked Questions (FAQ) Related to This Security Update, earlier in this bulletin.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.
- Click Start, and then click Search.
- In the Search Results pane, click All files and folders under Search Companion.
- In the All or part of the file name box, type a file name from the appropriate file information table, and then click Search.
- 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.
- 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\KB925486\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 925486 security update into the Windows installation source files.
Other Information
Acknowledgments
Microsoft thanks the following for working with us to help protect customers:
- ISS X-Force for working with Microsoft on the VML Buffer Overrun Vulnerability (CVE-2006-4868).
- iDEFENSE for working with Microsoft on the VML Buffer Overrun Vulnerability (CVE-2006-4868).
- Dan Hubbard at Websense Security Labs for working with Microsoft on the VML Buffer Overrun Vulnerability (CVE-2006-4868).
Obtaining Other Security Updates:
Updates for other security issues are available at the following locations:
- Security updates are available at the Microsoft Download Center. You can find them most easily by doing a keyword search for "security_patch."
- Updates for consumer platforms are available at 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:
- The Microsoft TechNet Security Web site provides additional information about security in Microsoft products.
- TechNet Update Management Center
- Microsoft Software Update Services
- Microsoft Windows Server Update Services
- Microsoft Baseline Security Analyzer (MBSA)
- Windows Update
- Microsoft Update
- Windows Update Catalog: For more information about the Windows Update Catalog, see Microsoft Knowledge Base Article 323166.
- Office Update
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 onto Windows 2000 and later operating systems.
For more information about how to deploy security updates using Windows Server Update Services, visit the Windows Server Update Services Web site.
Systems Management Server:
Microsoft Systems Management Server (SMS) delivers a highly configurable enterprise solution for managing updates. By using SMS, administrators can identify Windows-based systems that require security updates and can perform controlled deployment of these updates throughout the enterprise with minimal disruption to end users. For more information about how administrators can use SMS 2003 to deploy security updates, visit the SMS 2003 Security Patch Management Web site. SMS 2.0 users can also use Software Updates Service Feature Pack to help deploy security updates. For information about SMS, visit the SMS Web site.
Note SMS uses the Microsoft Baseline Security Analyzer, the Microsoft Office Detection Tool, and the Enterprise Update Scan Tool to provide broad support for security bulletin update detection and deployment. Some software updates may not be detected by these tools. Administrators can use the inventory capabilities of the SMS in these cases to target updates to specific systems. For more information about this procedure, visit the following Web site. Some security updates require administrative rights following a restart of the system. Administrators can use the Elevated Rights Deployment Tool (available in the SMS 2003 Administration Feature Pack and in the SMS 2.0 Administration Feature Pack) to install these updates.
Disclaimer:
The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
Revisions:
- V1.0 (September 26, 2006): Bulletin published.
- V1.1 (October 5, 2006): Bulletin updated: “Affected Components” updated to specifically call out Microsoft Windows 2000 Service Pack 4. Guidance has been provided for the “Modify the Access Control List on VGX.DLL to be more restrictive” workaround concerning software that redistributes vgx.dll. Additionally, instructions have been provided for customers wishing to revert to the default installed ACL configuration for vgx.dll.
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