Article
12/03/2019
47 minutes to read

Security Bulletin

Microsoft Security Bulletin MS11-075 - Important

Vulnerability in Microsoft Active Accessibility Could Allow Remote Code Execution (2623699)

Published: October 11, 2011 | Updated: October 25, 2011

Version: 1.2

General Information

Executive Summary

This security update resolves a privately reported vulnerability in the Microsoft Active Accessibility component. The vulnerability could allow remote code execution if an attacker convinces a user to open a legitimate file that is located in the same network directory as a specially crafted dynamic link library (DLL) file. Then, while opening the legitimate file, the Microsoft Active Accessibility component could attempt to load the DLL file and execute any code it contained. For an attack to be successful, a user must visit an untrusted remote file system location or WebDAV share and open a document from this location that is then loaded by a vulnerable application.

This security update is rated Important for all supported releases of Microsoft Windows. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerability by correcting the manner in which the Microsoft Active Accessibility component loads external libraries. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

Recommendation. The majority of customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates and install this update manually. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.

For administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update at the earliest opportunity using update management software, or by checking for updates using the Microsoft Update service.

See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.

Known Issues. None

Affected and Non-Affected Software

The following software have been tested to determine which versions or editions are affected. Other versions or editions are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, visit Microsoft Support Lifecycle.

Affected Software

Operating System	Maximum Security Impact	Aggregate Severity Rating	Bulletins Replaced by this Update
Windows XP Service Pack 3 (KB2564958)	Remote Code Execution	Important	None
Windows XP Professional x64 Edition Service Pack 2 (KB2564958)	Remote Code Execution	Important	None
Windows Server 2003 Service Pack 2 (KB2564958)	Remote Code Execution	Important	None
Windows Server 2003 x64 Edition Service Pack 2 (KB2564958)	Remote Code Execution	Important	None
Windows Server 2003 with SP2 for Itanium-based Systems (KB2605295)	Remote Code Execution	Important	None
Windows Vista Service Pack 2 (KB2564958)	Remote Code Execution	Important	MS11-038
Windows Vista x64 Edition Service Pack 2 (KB2564958)	Remote Code Execution	Important	MS11-038
Windows Server 2008 for 32-bit Systems Service Pack 2* (KB2564958)	Remote Code Execution	Important	MS11-038
Windows Server 2008 for x64-based Systems Service Pack 2* (KB2564958)	Remote Code Execution	Important	MS11-038
Windows Server 2008 for Itanium-based Systems Service Pack 2 (KB2564958)	Remote Code Execution	Important	MS11-038
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1 (KB2564958)	Remote Code Execution	Important	MS11-038
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1 (KB2564958)	Remote Code Execution	Important	MS11-038
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1* (KB2564958)	Remote Code Execution	Important	MS11-038
Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 (KB2564958)	Remote Code Execution	Important	MS11-038

Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected Software	Active Accessibility Insecure Library Loading Vulnerability - CVE-2011-1247	Aggregate Severity Rating
Windows XP Service Pack 3	Important Remote Code Execution	Important
Windows XP Professional x64 Edition Service Pack 2	Important Remote Code Execution	Important
Windows Server 2003 Service Pack 2	Important Remote Code Execution	Important
Windows Server 2003 x64 Edition Service Pack 2	Important Remote Code Execution	Important
Windows Server 2003 with SP2 for Itanium-based Systems	Important Remote Code Execution	Important
Windows Vista Service Pack 2	Important Remote Code Execution	Important
Windows Vista x64 Edition Service Pack 2	Important Remote Code Execution	Important
Windows Server 2008 for 32-bit Systems Service Pack 2*	Important Remote Code Execution	Important
Windows Server 2008 for x64-based Systems Service Pack 2*	Important Remote Code Execution	Important
Windows Server 2008 for Itanium-based Systems Service Pack 2	Important Remote Code Execution	Important
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1	Important Remote Code Execution	Important
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1	Important Remote Code Execution	Important
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1*	Important Remote Code Execution	Important
Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1	Important Remote Code Execution	Important

**\*Server Core installation affected.** This update applies, with the same severity rating, to supported editions of Windows Server 2008 or Windows Server 2008 R2 as indicated, whether or not installed using the Server Core installation option. For more information on this installation option, see the TechNet articles, [Managing a Server Core Installation](http://technet.microsoft.com/en-us/library/ee441255(ws.10).aspx) and [Servicing a Server Core Installation](http://technet.microsoft.com/en-us/library/ff698994(ws.10).aspx). Note that the Server Core installation option does not apply to certain editions of Windows Server 2008 and Windows Server 2008 R2; see [Compare Server Core Installation Options](http://www.microsoft.com/windowsserver2008/en/us/compare-core-installation.aspx). Active Accessibility Insecure Library Loading Vulnerability - CVE-2011-1247 --------------------------------------------------------------------------- A remote code execution vulnerability exists in the way that the Microsoft Active Accessibility component handles the loading of DLL files. 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. To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see [CVE-2011-1247](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2011-1247). #### Mitigating Factors for Active Accessibility Insecure Library Loading Vulnerability - CVE-2011-1247 Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors may be helpful in your situation: - For an attack to be successful, a user must visit an untrusted remote file system location or WebDAV share and open a document from this location that is then loaded by a vulnerable application. - The file sharing protocol, Server Message Block (SMB), is often disabled on the perimeter firewall. This limits the potential attack vectors for this vulnerability. - 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. #### Workarounds for Active Accessibility Insecure Library Loading Vulnerability - CVE-2011-1247 Workaround refers to a setting or configuration change that does not correct the underlying vulnerability but would help block known attack vectors before you apply the update. Microsoft has tested the following workarounds and states in the discussion whether a workaround reduces functionality: - **Disable loading of libraries from WebDAV and remote network shares** **Note** See [Microsoft Knowledge Base Article 2264107](http://support.microsoft.com/kb/2264107) to deploy a workaround tool that allows customers to disable the loading of libraries from remote network or WebDAV shares. This tool can be configured to disallow insecure loading on a per-application or a global system basis. Customers who are informed by their vendor of an application being vulnerable can use this tool to help protect against attempts to exploit this issue. **Note** See [Microsoft Knowledge Base Article 2264107](http://support.microsoft.com/kb/2264107) to use the automated **Microsoft Fix it** solution to deploy the registry key to block the loading of libraries for SMB and WebDAV shares. Note that this Fix it solution does require you to install the workaround tool also described in [Microsoft Knowledge Base Article 2264107](http://support.microsoft.com/kb/2264107) first. This Fix it solution only deploys the registry key and requires the workaround tool in order to be effective. We recommend that administrators review the KB article closely prior to deploying this Fix it solution. - **Disable the** **WebClient** **service** Disabling the WebClient service helps protect affected systems from attempts to exploit this vulnerability by blocking the most likely remote attack vector through the Web Distributed Authoring and Versioning (WebDAV) client service. After applying this workaround it is still possible for remote attackers who successfully exploit this vulnerability to cause the system to run programs located on the targeted user's computer or the Local Area Network (LAN), but users will be prompted for confirmation before opening arbitrary programs from the Internet. To disable the WebClient Service, follow these steps: 1. Click **Start**, click **Run**, type **Services.msc** and then click **OK**. 2. Right-click **WebClient** service and select **Properties**. 3. Change the Startup type to **Disabled**. If the service is running, click **Stop**. 4. Click **OK** and exit the management application. **Impact of workaround.** When the WebClient service is disabled, Web Distributed Authoring and Versioning (WebDAV) requests are not transmitted. In addition, any services that explicitly depend on the Web Client service will not start, and an error message will be logged in the System log. For example, WebDAV shares will be inaccessible from the client computer. **How to undo the workaround.** To re-enable the WebClient Service, follow these steps: 1. Click **Start**, click **Run**, type **Services.msc** and then click **OK**. 2. Right-click **WebClient** service and select **Properties**. 3. Change the Startup type to **Automatic**. If the service is not running, click **Start**. 4. Click **OK** and exit the management application. - **Block TCP ports 139 and 445 at the firewall** These ports are used to initiate a connection with the affected component. Blocking TCP ports 139 and 445 at the firewall will help protect systems that are behind that firewall from attempts to exploit this vulnerability. Microsoft recommends that you block all unsolicited inbound communication from the Internet to help prevent attacks that may use other ports. For more information about ports, see the TechNet article, [TCP and UDP Port Assignments](http://go.microsoft.com/fwlink/?linkid=21312). **Impact of workaround.** Several Windows services use the affected ports. Blocking connectivity to the ports may cause various applications or services to not function. Some of the applications or services that could be impacted are listed below: - Applications that use SMB (CIFS) - Applications that use mailslots or named pipes (RPC over SMB) - Server (File and Print Sharing) - Group Policy - Net Logon - Distributed File System (DFS) - Terminal Server Licensing - Print Spooler - Computer Browser - Remote Procedure Call Locator - Fax Service - Indexing Service - Performance Logs and Alerts - Systems Management Server - License Logging Service **How to undo the workaround.** Unblock TCP ports 139 and 445 at the firewall. For more information about ports, see [TCP and UDP Port Assignments](http://go.microsoft.com/fwlink/?linkid=21312). #### FAQ for Active Accessibility Insecure Library Loading Vulnerability - CVE-2011-1247 **What is the scope of the vulnerability?** This is a remote code execution vulnerability. 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. **What causes the vulnerability?** The vulnerability is the result of the Microsoft Active Accessibility component improperly restricting the path used for loading external libraries. **What is the Microsoft Active Accessibility component?** The Microsoft Active Accessibility component is a Component Object Model (COM)-based technology that improves the way accessibility aids work with applications running on Microsoft Windows. It provides dynamic-link libraries that are incorporated into the operating system as well as a COM interface and API elements that provide reliable methods for exposing information about UI elements. For more information, see the MSDN article, [Microsoft Active Accessibility](http://msdn.microsoft.com/en-us/library/ms971350.aspx). **What might an attacker use the vulnerability to do?** An attacker who successfully exploited this vulnerability could run arbitrary code as the logged-on user. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. If a user is logged on with administrative user rights, an attacker could take complete control of the affected system. 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. **How could an attacker exploit the** **vulnerability?** An attacker could convince a user to open a legitimate file that is located in the same network directory as a specially crafted dynamic link library (DLL) file. Then, while opening the legitimate file, the Microsoft Active Accessibility component could attempt to load the DLL file and execute any code it contained. In an e-mail attack scenario, an attacker could exploit the vulnerability by sending a legitimate file attachment to a user, and convincing the user to place the attachment into a directory containing a specially crafted DLL file and to open the legitimate file. Then, while opening the legitimate file, the Microsoft Active Accessibility component could attempt to load the DLL file and execute any code it contained. In a network attack scenario, an attacker could place a legitimate file and a specially crafted DLL file in a network share, a UNC, or WebDAV location and then convince the user to open the file. **What systems are primarily at risk from the vulnerability?** This vulnerability mainly affects workstations where users may be expected to open attachments from untrusted network locations. Servers could also be at risk if administrators allow users to log on to servers and to run programs. However, best practices strongly discourage allowing this. **What does the update do?** The update addresses this vulnerability by correcting the manner in which the Microsoft Active Accessibility component loads external libraries. **Is this vulnerability related to Microsoft Security Advisory 2269637?** Yes, this vulnerability is related to the class of vulnerabilities, described in [Microsoft Security Advisory 2269637](http://technet.microsoft.com/security/advisory/2269637), that affects how applications load external libraries. This security update addresses a particular instance of this type of vulnerability. **When this security bulletin was issued, had this vulnerability been publicly disclosed?** No. Microsoft received information about this vulnerability through coordinated vulnerability disclosure. **When this security bulletin was issued, had Microsoft received any reports that this vulnerability was being exploited?** No. Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers when this security bulletin was originally issued. ### Update Information Detection and Deployment Tools and Guidance ------------------------------------------- **Security Central** Manage the software and security updates you need to deploy to the servers, desktop, and mobile systems in your organization. For more information see the [TechNet Update Management Center](http://go.microsoft.com/fwlink/?linkid=69903). The [Microsoft TechNet Security Web site](http://go.microsoft.com/fwlink/?linkid=21132) provides additional information about security in Microsoft products. Security updates are available from [Microsoft Update](http://go.microsoft.com/fwlink/?linkid=40747) and [Windows Update](http://go.microsoft.com/fwlink/?linkid=21130). Security updates are also available from the [Microsoft Download Center](http://go.microsoft.com/fwlink/?linkid=21129). You can find them most easily by doing a keyword search for "security update." Finally, security updates can be downloaded from the [Microsoft Update Catalog](http://go.microsoft.com/fwlink/?linkid=96155). The Microsoft Update Catalog provides a searchable catalog of content made available through Windows Update and Microsoft Update, including security updates, drivers and service packs. By searching using the security bulletin number (such as, "MS07-036"), you can add all of the applicable updates to your basket (including different languages for an update), and download to the folder of your choosing. For more information about the Microsoft Update Catalog, see the [Microsoft Update Catalog FAQ](http://go.microsoft.com/fwlink/?linkid=97900). **Detection and Deployment Guidance** Microsoft provides detection and deployment guidance for security updates. This guidance contains recommendations and information that can help IT professionals understand how to use various tools for detection and deployment of security updates. For more information, see [Microsoft Knowledge Base Article 961747](http://support.microsoft.com/kb/961747). **Microsoft Baseline Security Analyzer** Microsoft Baseline Security Analyzer (MBSA) allows administrators to scan local and remote systems for missing security updates as well as common security misconfigurations. For more information about MBSA, visit [Microsoft Baseline Security Analyzer](http://www.microsoft.com/technet/security/tools/mbsahome.mspx). The following table provides the MBSA detection summary for this security update. | Software | MBSA | |----------------------------------------------------------------------------------------------------------------------|------| | Windows XP Service Pack 3 | Yes | | Windows XP Professional x64 Edition Service Pack 2 | Yes | | Windows Server 2003 Service Pack 2 | Yes | | Windows Server 2003 x64 Edition Service Pack 2 | Yes | | Windows Server 2003 with SP2 for Itanium-based Systems | Yes | | Windows Vista Service Pack 2 | Yes | | Windows Vista x64 Edition Service Pack 2 | Yes | | Windows Server 2008 for 32-bit Systems Service Pack 2 | Yes | | Windows Server 2008 for x64-based Systems Service Pack 2 | Yes | | Windows Server 2008 for Itanium-based Systems Service Pack 2 | Yes | | Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1 | Yes | | Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1 | Yes | | Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1 | Yes | | Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 | Yes | **Note** For customers using legacy software not supported by the latest release of MBSA, Microsoft Update, and Windows Server Update Services, please visit [Microsoft Baseline Security Analyzer](http://www.microsoft.com/technet/security/tools/mbsahome.mspx) and reference the Legacy Product Support section on how to create comprehensive security update detection with legacy tools. **Windows Server Update Services** Windows Server Update Services (WSUS) enables information technology administrators to deploy the latest Microsoft product updates to computers that are running the Windows operating system. For more information about how to deploy security updates using Windows Server Update Services, see the TechNet article, [Windows Server Update Services](http://technet.microsoft.com/en-us/wsus/default.aspx). **Systems Management Server** The following table provides the SMS detection and deployment summary for this security update. | Software | SMS 2003 with ITMU | Configuration Manager 2007 | |----------------------------------------------------------------------------------------------------------------------|--------------------|----------------------------| | Windows XP Service Pack 3 | Yes | Yes | | Windows XP Professional x64 Edition Service Pack 2 | Yes | Yes | | Windows Server 2003 Service Pack 2 | Yes | Yes | | Windows Server 2003 x64 Edition Service Pack 2 | Yes | Yes | | Windows Server 2003 with SP2 for Itanium-based Systems | Yes | Yes | | Windows Vista Service Pack 2 | Yes | Yes | | Windows Vista x64 Edition Service Pack 2 | Yes | Yes | | Windows Server 2008 for 32-bit Systems Service Pack 2 | Yes | Yes | | Windows Server 2008 for x64-based Systems Service Pack 2 | Yes | Yes | | Windows Server 2008 for Itanium-based Systems Service Pack 2 | Yes | Yes | | Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1 | Yes | Yes | | Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1 | Yes | Yes | | Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1 | Yes | Yes | | Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 | Yes | Yes | **Note** Microsoft discontinued support for SMS 2.0 on April 12, 2011. For SMS 2003, Microsoft also discontinued support for the Security Update Inventory Tool (SUIT) on April 12, 2011. Customers are encouraged to upgrade to [System Center Configuration Manager 2007](http://technet.microsoft.com/en-us/library/bb735860.aspx). For customers remaining on SMS 2003 Service Pack 3, the [Inventory Tool for Microsoft Updates](http://technet.microsoft.com/en-us/sms/bb676783.aspx) (ITMU) is also an option. 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](http://go.microsoft.com/fwlink/?linkid=40747) and that are supported by [Windows Server Update Services](http://go.microsoft.com/fwlink/?linkid=50120). For more information about the SMS 2003 ITMU, see [SMS 2003 Inventory Tool for Microsoft Updates](http://technet.microsoft.com/en-us/sms/bb676783.aspx). For more information about SMS scanning tools, see [SMS 2003 Software Update Scanning Tools](http://technet.microsoft.com/en-us/sms/bb676786.aspx). See also [Downloads for Systems Management Server 2003](http://technet.microsoft.com/en-us/sms/bb676766.aspx). System Center Configuration Manager 2007 uses WSUS 3.0 for detection of updates. For more information about Configuration Manager 2007 Software Update Management, visit [System Center Configuration Manager 2007](http://technet.microsoft.com/en-us/library/bb735860.aspx). For more information about SMS, visit the [SMS Web site](http://go.microsoft.com/fwlink/?linkid=21158). For more detailed information, see [Microsoft Knowledge Base Article 910723](http://support.microsoft.com/kb/910723): Summary list of monthly detection and deployment guidance articles. **Update Compatibility Evaluator and Application Compatibility Toolkit** Updates often write to the same files and registry settings required for your applications to run. This can trigger incompatibilities and increase the time it takes to deploy security updates. You can streamline testing and validating Windows updates against installed applications with the [Update Compatibility Evaluator](http://technet2.microsoft.com/windowsvista/en/library/4279e239-37a4-44aa-aec5-4e70fe39f9de1033.mspx?mfr=true) components included with [Application Compatibility Toolkit](https://www.microsoft.com/download/details.aspx?familyid=24da89e9-b581-47b0-b45e-492dd6da2971&displaylang=en). The Application Compatibility Toolkit (ACT) contains the necessary tools and documentation to evaluate and mitigate application compatibility issues before deploying Microsoft Windows Vista, a Windows Update, a Microsoft Security Update, or a new version of Windows Internet Explorer in your environment. Security Update Deployment -------------------------- **Affected Software** For information about the specific security update for your affected software, click the appropriate link: #### Windows XP (all editions) **Reference Table** The following table contains the security update information for this software. You can find additional information in the subsection, **Deployment Information**, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For Windows XP Service Pack 3: WindowsXP-KB2564958-x86-enu.exe /quiet
	For Windows XP Professional x64 Edition Service Pack 2: WindowsServer2003.WindowsXP-KB2564958-x64-enu.exe /quiet
Installing without restarting	For Windows XP Service Pack 3: WindowsXP-KB2564958-x86-enu.exe /norestart
	For Windows XP Professional x64 Edition Service Pack 2: WindowsServer2003.WindowsXP-KB2564958-x64-enu.exe /norestart
Update log file	KB2564958.log
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	Yes, you must restart your system after you apply this security update.
HotPatching	Not applicable
Removal Information	Use Add or Remove Programs tool in Control Panel or the Spuninst.exe utility located in the %Windir%\$NTUninstallKB2564958$\Spuninst folder
File Information	See Microsoft Knowledge Base Article 2564958
Registry Key Verification	For all supported 32-bit editions of Windows XP: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP\SP10\KB2564958\Filelist
	For all supported x64-based editions of Windows XP: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP Version 2003\SP10\KB2564958\Filelist

Note The update for supported versions of Windows XP Professional x64 Edition also applies to supported versions of Windows Server 2003 x64 Edition.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether 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 installer, see Microsoft Knowledge Base Article 832475.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

This security update supports the following setup switches.

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

**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](http://support.microsoft.com/kb/262841).

Removing the Update

This security update supports the following setup switches.

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

**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 section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification

Because there are several editions of Microsoft Windows, the following steps may be different on your system. 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 edition of the operating system, or the programs that are installed on your system, 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 system 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 registry keys listed in the Reference Table in this section.

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

Windows Server 2003 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For all supported 32-bit editions of Windows Server 2003: WindowsServer2003-KB2564958-x86-enu.exe /quiet
	For all supported x64-based editions of Windows Server 2003: WindowsServer2003.WindowsXP-KBKB2564958-x64-enu.exe /quiet
	For all supported Itanium-based editions of Windows Server 2003: WindowsServer2003-KB2605295-ia64-enu.exe /quiet
Installing without restarting	For all supported 32-bit editions of Windows Server 2003: WindowsServer2003-KB2564958-x86-enu.exe /norestart
	For all supported x64-based editions of Windows Server 2003: WindowsServer2003.WindowsXP-KBKB2564958-x64-enu.exe /norestart
	For all supported Itanium-based editions of Windows Server 2003: WindowsServer2003-KB2605295-ia64-enu.exe /norestart
Update log file	For all supported 32-bit and x64-based editions of Windows Server 2003: KB2564958.log
	For all supported Itanium-based editions of Windows Server 2003: KB2605295.log
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	Yes, you must restart your system after you apply this security update.
HotPatching	This security update does not support HotPatching. For more information about HotPatching, see [Microsoft Knowledge Base Article 897341](http://support.microsoft.com/kb/897341).
Removal Information	For all supported 32-bit and x64-based editions of Windows Server 2003: Use Add or Remove Programs tool in Control Panel or the Spuninst.exe utility located in the %Windir%\\$NTUninstallKB2564958$\\Spuninst folder
	For all supported Itanium-based editions of Windows Server 2003: Use Add or Remove Programs tool in Control Panel or the Spuninst.exe utility located in the %Windir%\\$NTUninstallKB2605295$\\Spuninst folder
File Information	For all supported 32-bit and x64-based editions of Windows Server 2003: See [Microsoft Knowledge Base Article 2564958](http://support.microsoft.com/kb/2564958)
	For all supported Itanium-based editions of Windows Server 2003: See [Microsoft Knowledge Base Article 2605295](http://support.microsoft.com/kb/2605295)
Registry Key Verification	For all supported 32-bit and x64-based editions of Windows Server 2003: HKEY\_LOCAL\_MACHINE\\SOFTWARE\\Microsoft\\Updates\\Windows Server 2003\\SP10\\KB2564958\\Filelist
	For all supported Itanium-based editions of Windows Server 2003: HKEY\_LOCAL\_MACHINE\\SOFTWARE\\Microsoft\\Updates\\Windows Server 2003\\SP3\\KB2605295\\Filelist

**Note** The update for supported versions of Windows Server 2003 x64 Edition also applies to supported versions of Windows XP Professional x64 Edition.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the installer, see Microsoft Knowledge Base Article 832475.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

This security update supports the following setup switches.

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

**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](http://support.microsoft.com/kb/262841).

Removing the Update

This security update supports the following setup switches.

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

**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 section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification

Because there are several editions of Microsoft Windows, the following steps may be different on your system. 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 edition of the operating system, or the programs that are installed on your system, 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 system 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 registry keys listed in the Reference Table in this section.

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

Windows Vista (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For all supported 32-bit editions of Windows Vista: Windows6.0-KB2564958-x86.msu /quiet
	For all supported x64-based editions of Windows Vista: Windows6.0-KB2564958-x64.msu /quiet
Installing without restarting	For all supported 32-bit editions of Windows Vista: Windows6.0-KB2564958-x86.msu /quiet /norestart
	For all supported x64-based editions of Windows Vista: Windows6.0-KB2564958-x64.msu /quiet /norestart
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	Yes, you must restart your system after you apply this security update.
HotPatching	Not applicable.
Removal Information	WUSA.exe does not support uninstall of updates. To uninstall an update installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates and select from the list of updates.
File Information	See Microsoft Knowledge Base Article 2564958
Registry Key Verification	Note A registry key does not exist to validate the presence of this update.

#### Deployment Information **Installing the Update** When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix. For more information about the terminology that appears in this bulletin, such as *hotfix*, see [Microsoft Knowledge Base Article 824684](http://support.microsoft.com/kb/824684). This security update supports the following setup switches.

Supported Security Update Installation Switches

Switch	Description
/?, /h, /help	Displays help on supported switches.
/quiet	Suppresses the display of status or error messages.
/norestart	When combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.

Note For more information about the wusa.exe installer, see Microsoft Knowledge Base Article 934307.

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 section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification

Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Start Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some of the files that are listed in the file information table may not be installed.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
  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.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows Server 2008 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For all supported 32-bit editions of Windows Server 2008: Windows6.0-KB2564958-x86.msu /quiet
	For all supported x64-based editions of Windows Server 2008: Windows6.0-KB2564958-x64.msu /quiet
	For all supported Itanium-based editions of Windows Server 2008: Windows6.0-KB2564958-ia64.msu /quiet
Installing without restarting	For all supported 32-bit editions of Windows Server 2008: Windows6.0-KB2564958-x86.msu /quiet /norestart
	For all supported x64-based editions of Windows Server 2008: Windows6.0-KB2564958-x64.msu /quiet /norestart
	For all supported Itanium-based editions of Windows Server 2008: Windows6.0-KB2564958-ia64.msu /quiet /norestart
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	Yes, you must restart your system after you apply this security update.
HotPatching	Not applicable.
Removal Information	WUSA.exe does not support uninstall of updates. To uninstall an update installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates and select from the list of updates.
File Information	See Microsoft Knowledge Base Article 2564958
Registry Key Verification	Note A registry key does not exist to validate the presence of this update.

Supported Security Update Installation Switches

Switch	Description
/?, /h, /help	Displays help on supported switches.
/quiet	Suppresses the display of status or error messages.
/norestart	When combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.

Note For more information about the wusa.exe installer, see Microsoft Knowledge Base Article 934307.

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 section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification

Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Start Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some of the files that are listed in the file information table may not be installed.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
  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.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows 7 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For all supported 32-bit editions of Windows 7: Windows6.1-KB2564958-x86.msu /quiet
	For all supported x64-based editions of Windows 7: Windows6.1-KB2564958-x64.msu /quiet
Installing without restarting	For all supported 32-bit editions of Windows 7: Windows6.1-KB2564958-x86.msu /quiet /norestart
	For all supported x64-based editions of Windows 7: Windows6.1-KB2564958-x64.msu /quiet /norestart
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	Yes, you must restart your system after you apply this security update.
HotPatching	Not applicable.
Removal Information	To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates and select from the list of updates.
File Information	See Microsoft Knowledge Base Article 2564958
Registry Key Verification	Note A registry key does not exist to validate the presence of this update.

Supported Security Update Installation Switches

Switch	Description
/?, /h, /help	Displays help on supported switches.
/quiet	Suppresses the display of status or error messages.
/norestart	When combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.
/warnrestart:<seconds>	When combined with /quiet, the installer will warn the user before initiating restart.
/promptrestart	When combined with /quiet, the installer will prompt before initiating restart.
/forcerestart	When combined with /quiet, the installer will forcefully close applications and initiate restart.
/log:<file name>	Enables logging to specified file.
/extract:<destination>	Extracts the package contents to the destination folder.
/uninstall /kb:<KB Number>	Uninstalls the security update.

Note For more information about the wusa.exe installer, see "Windows Update Stand-alone Installer" in the TechNet article, Miscellaneous Changes in Windows 7.

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 section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification

Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some of the files that are listed in the file information table may not be installed.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
  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.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows Server 2008 R2 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For all supported x64-based editions of Windows Server 2008 R2: Windows6.1-KB2564958-x64.msu /quiet
	For all supported Itanium-based editions of Windows Server 2008 R2: Windows6.1-KB2564958-ia64.msu /quiet
Installing without restarting	For all supported x64-based editions of Windows Server 2008 R2: Windows6.1-KB2564958-x64.msu /quiet /norestart
	For all supported Itanium-based editions of Windows Server 2008 R2: Windows6.1-KB2564958-ia64.msu /quiet /norestart
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	Yes, you must restart your system after you apply this security update.
HotPatching	Not applicable.
Removal Information	To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates and select from the list of updates.
File Information	See Microsoft Knowledge Base Article 2564958
Registry Key Verification	Note A registry key does not exist to validate the presence of this update.

Supported Security Update Installation Switches

Switch	Description
/?, /h, /help	Displays help on supported switches.
/quiet	Suppresses the display of status or error messages.
/norestart	When combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.
/warnrestart:<seconds>	When combined with /quiet, the installer will warn the user before initiating restart.
/promptrestart	When combined with /quiet, the installer will prompt before initiating restart.
/forcerestart	When combined with /quiet, the installer will forcefully close applications and initiate restart.
/log:<file name>	Enables logging to specified file.
/extract:<destination>	Extracts the package contents to the destination folder.
/uninstall /kb:<KB Number>	Uninstalls the security update.

Note For more information about the wusa.exe installer, see "Windows Update Stand-alone Installer" in the TechNet article, Miscellaneous Changes in Windows 7.

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 section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification

Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Start Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some of the files that are listed in the file information table may not be installed.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
  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.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Other Information

Acknowledgments

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

Mila Parkour, working with Anshul Kothari and Nishant Kaushik of Adobe Systems, Inc., for reporting the Active Accessibility Insecure Library Loading Vulnerability (CVE-2011-1247)

Microsoft Active Protections Program (MAPP)

To improve security protections for customers, Microsoft provides vulnerability information to major security software providers in advance of each monthly security update release. Security software providers can then use this vulnerability information to provide updated protections to customers via their security software or devices, such as antivirus, network-based intrusion detection systems, or host-based intrusion prevention systems. To determine whether active protections are available from security software providers, please visit the active protections Web sites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.

Support

Customers in the U.S. and Canada can receive technical support from Security Support or 1-866-PCSAFETY. There is no charge for support calls that are associated with security updates. For more information about available support options, see Microsoft Help and Support.
International customers can receive support from their local Microsoft subsidiaries. There is no charge for support that is associated with security updates. For more information about how to contact Microsoft for support issues, visit the International Support Web site.

Disclaimer

The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

Revisions

V1.0 (October 11, 2011): Bulletin published.
V1.1 (October 12, 2011): Corrected the bulletin replacement information for all supported editions of Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2. This is an informational change only. There were no changes to the detection logic or the update files.
V1.2 (October 25, 2011): Revised the update file names for 32-bit and x64-based editions of Windows XP and Windows Server 2003, in accordance with the schema documented in Microsoft Knowledgebase Article KB816915. This is a change to file names only. There were no changes to the detection logic or update content. Customers who have already successfully installed this update do not need to take any action.

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

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