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Microsoft Security Bulletin MS09-053 - Important

Vulnerabilities in FTP Service for Internet Information Services Could Allow Remote Code Execution (975254)

Published: October 13, 2009 | Updated: October 19, 2009

Version: 1.1

General Information

Executive Summary

This security update resolves two publicly disclosed vulnerabilities in the FTP Service in Microsoft Internet Information Services (IIS) 5.0, Microsoft Internet Information Services (IIS) 5.1, Microsoft Internet Information Services (IIS) 6.0, and Microsoft Internet Information Services (IIS) 7.0. On IIS 7.0, only FTP Service 6.0 is affected. The vulnerabilities could allow remote code execution (RCE) on systems running FTP Service on IIS 5.0, or denial of service (DoS) on systems running FTP Service on IIS 5.0, IIS 5.1, IIS 6.0 or IIS 7.0.

This security update is rated Important for IIS 5.0; IIS 5.1; IIS 6.0; and FTP Service 6.0 on IIS 7.0. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerabilities by modifying the way that the FTP Service handles list operations. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

This security update also addresses the vulnerability first described in Microsoft Security Advisory 975191.

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. Microsoft Knowledge Base Article 975254 documents the currently known issues that customers may experience when installing this security update. The article also documents recommended solutions for these issues.

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 SystemComponentMaximum Security ImpactAggregate Severity RatingBulletins Replaced by this Update
IIS 5.0 (FTP Service 5.0)
Microsoft Windows 2000 Service Pack 4 Microsoft Internet Information Services 5.0ImportantRemote Code ExecutionNone
IIS 5.1 (FTP Service 5.1)
Windows XP Service Pack 2 and Windows XP Service Pack 3 Microsoft Internet Information Services 5.1ImportantDenial of ServiceNone
IIS 6.0 (FTP Service 6.0)
Windows XP Professional x64 Edition Service Pack 2 Microsoft Internet Information Services 6.0ImportantDenial of ServiceNone
Windows Server 2003 Service Pack 2 Microsoft Internet Information Services 6.0ImportantDenial of ServiceNone
Windows Server 2003 x64 Edition Service Pack 2 Microsoft Internet Information Services 6.0ImportantDenial of ServiceNone
Windows Server 2003 with SP2 for Itanium-based Systems Microsoft Internet Information Services 6.0ImportantDenial of ServiceNone
IIS 7.0 (FTP Service 6.0)
Windows Vista, Windows Vista Service Pack 1, and Windows Vista Service Pack 2 Microsoft Internet Information Services 7.0ImportantDenial of ServiceNone
Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and Windows Vista x64 Edition Service Pack 2 Microsoft Internet Information Services 7.0ImportantDenial of ServiceNone
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2*Microsoft Internet Information Services 7.0ImportantDenial of ServiceNone
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2*Microsoft Internet Information Services 7.0ImportantDenial of ServiceNone
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2 Microsoft Internet Information Services 7.0ImportantDenial of ServiceNone

*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 MSDN articles, Server Core and Server Core for Windows Server 2008 R2. 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.

Non-Affected Software

Operating System Component
Windows Vista, Windows Vista Service Pack 1, and Windows Vista Service Pack 2Microsoft Internet Information Services 7.0 (FTP Service 7.5*)
Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and Windows Vista x64 Edition Service Pack 2Microsoft Internet Information Services 7.0 (FTP Service 7.5*)
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2Microsoft Internet Information Services 7.0 (FTP Service 7.5*)
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2Microsoft Internet Information Services 7.0 (FTP Service 7.5*)
Windows 7 for 32-bit SystemsMicrosoft Internet Information Services 7.5 (FTP Service 7.5)
Windows 7 for x64-based SystemsMicrosoft Internet Information Services 7.5 (FTP Service 7.5)
Windows Server 2008 R2 for x64-based SystemsMicrosoft Internet Information Services 7.5 (FTP Service 7.5)
Windows Server 2008 R2 for Itanium-based SystemsMicrosoft Internet Information Services 7.5 (FTP Service 7.5)

*Available as an out-of-box download. See entry in Frequently Asked Questions.

Where are the file information details? 
Refer to the reference tables in the Security Update Deployment section for the location of the file information details.

Why does this update address several reported security vulnerabilities? 
This update contains support for several vulnerabilities because the modifications that are required to address these issues are located in related files. Instead of having to install several updates that are almost the same, customers need to install this update only.

I installed FTP using Windows Server 2008 Server Manager. Is my system affected?
When you use Windows Server 2008 Server Manager to install FTP, you are installing FTP Service 6.0, which is affected. Microsoft recommends that you install the appropriate security update from this bulletin or upgrade to FTP Service 7.5.

Is FTP Service 7.5 for Windows Vista or Windows Server 2008 affected by this vulnerability?
No. FTP Service 7.5, available as an out-of-box download for 32-bit and x64-based versions of Windows Vista and Windows Server 2008, is not affected by this vulnerability. See the following sites on Download Center:

I am using an older release of the software discussed in this security bulletin. What should I do? 
The affected software listed in this bulletin have been tested to determine which releases are affected. Other releases are past their support life cycle. To determine the support life cycle for your software release, visit Microsoft Support Lifecycle.

It should be a priority for customers who have older releases of the software to migrate to supported releases to prevent potential exposure to vulnerabilities. For more information about the Windows Product Lifecycle, visit Microsoft Support Lifecycle. For more information about the extended security update support period for these software versions or editions, visit Microsoft Product Support Services.

Customers who require custom support for older releases 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 Microsoft Worldwide Information, 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.

Vulnerability Information

The following severity ratings assume the potential maximum impact of the vulnerability. For information regarding the likelihood, within 30 days of this security bulletin's release, of the exploitability of the vulnerability in relation to its severity rating and security impact, please see the Exploitability Index in the October bulletin summary. For more information, see Microsoft Exploitability Index.

Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected SoftwareIIS FTP Service DoS Vulnerability - CVE-2009-2521IIS FTP Service RCE and DoS Vulnerability - CVE-2009-3023Aggregate Severity Rating
IIS 5.0 (FTP Service 5.0)
Microsoft Internet Information Services 5.0 on
Microsoft Windows 2000 Service Pack 4
Important
Denial of Service
Important
Remote Code Execution
Important
IIS 5.1 (FTP Service 5.1)
Microsoft Internet Information Services 5.1 on
Windows XP Service Pack 2 and Windows XP Service Pack 3
Important
Denial of Service
Important
Denial of Service
Important
IIS 6.0 (FTP Service 6.0)
Microsoft Internet Information Services 6.0 on
Windows XP Professional x64 Edition Service Pack 2
Important
Denial of Service
Important
Denial of Service
Important
Microsoft Internet Information Services 6.0 on
Windows Server 2003 Service Pack 2
Important
Denial of Service
Important
Denial of Service
Important
Microsoft Internet Information Services 6.0 on
Windows Server 2003 x64 Edition Service Pack 2
Important
Denial of Service
Important
Denial of Service
Important
Microsoft Internet Information Services 6.0 on
Windows Server 2003 with SP2 for Itanium-based Systems
Important
Denial of Service
Important
Denial of Service
Important
IIS 7.0 (FTP Service 6.0)
Microsoft Internet Information Services 7.0 on
Windows Vista, Windows Vista Service Pack 1, and Windows Vista Service Pack 2
Important
Denial of Service
Not applicable Important
Microsoft Internet Information Services 7.0 on
Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and Windows Vista x64 Edition Service Pack 2
Important
Denial of Service
Not applicable Important
Microsoft Internet Information Services 7.0 on
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2*
Important
Denial of Service
Not applicable Important
Microsoft Internet Information Services 7.0 on
Windows Server 2008 for x64-based bit Systems and Windows Server 2008 for x64-based Systems Service Pack 2*
Important
Denial of Service
Not applicable Important
Microsoft Internet Information Services 7.0 on
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2
Important
Denial of Service
Not applicable 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 MSDN articles, Server Core and Server Core for Windows Server 2008 R2. 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.

A vulnerability exists in the FTP Service in Microsoft Internet Information Services (IIS) 5.0, Microsoft Internet Information Services (IIS) 5.1, Microsoft Internet Information Services (IIS) 6.0, and Microsoft Internet Information Services (IIS) 7.0. The vulnerability could allow denial of service (DoS).

To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2009-2521.

Mitigating Factors for IIS FTP Service DoS Vulnerability - CVE-2009-2521

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:

  • FTP Service is not installed by default on all supported editions of Microsoft Windows 2000, Windows XP, Windows Vista, Windows Server 2003 Windows Server 2008 and Windows 7.

Workarounds for IIS FTP Service DoS Vulnerability - CVE-2009-2521

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 the FTP service

    Disable the FTP service using one of the following procedures:

    • From the command prompt, enter the following command:

      net stop msftpsvc
    • In the Internet Information Services panel, perform the following steps:

      1. Expand your server and right click on the FTP site.
      2. Click Stop.

    Impact of workaround. You will not be able to transfer files using the FTP service.

    How to undo the workaround.

    Re-enable the FTP service using one of the following procedures:

    • From the command prompt, enter the following command:

      net start msftpsvc
    • In the Internet Information Services panel, perform the following steps:

      1. Expand your server and right click on the FTP site.
      2. Click Start.
  • Deny FTP write access to anonymous users

    This workaround blocks denial of service attacks from anonymous users.

    This workaround blocks known exploits and minimizes the impact of any variations of this attack vector. However, this workaround does not render the vulnerability completely inaccessible to exploitation.

    Anonymous users are not granted FTP write access by default. If anonymous write access has been granted on an FTP server, the administrator can modify IIS permissions to prevent anonymous write access. Anonymous users will not be able to cause a remote code execution with this workaround.

    To modify IIS permissions to prevent FTP write access to anonymous users, perform the following steps:

    1. Launch IIS Manager.
    2. Right-click Default FTP Site and point to Properties.
    3. Click the Home Directory tab.
    4. Ensure that Write is deselected.

    Impact of workaround: Anonymous users will not have the ability to publish content on the server using the FTP Service.

    How to undo the workaround.

    1. Launch IIS Manager.
    2. Right-click Default FTP Site and point to Properties.
    3. Click the Home Directory tab.
    4. Ensure that Write is selected.
  • Deny FTP access to anonymous users

    This workaround blocks denial of service attacks from unauthenticated users without a valid user account.

    This workaround blocks known exploits and minimizes the impact of any variations of this attack vector. However, this workaround does not render the vulnerability completely inaccessible to exploitation.

    Anonymous users are not granted FTP write access by default. If anonymous write access has been granted on an FTP server, the administrator can modify IIS permissions to prevent anonymous write access. Anonymous users will not be able to exploit the vulnerability with this workaround.

    To modify IIS permissions to prevent FTP write access to anonymous users, perform the following steps:

    1. Launch IIS Manager.
    2. Right click Default FTP Site and point to Properties.
    3. Click the SecurityAccounts tab.
    4. Ensure that Allow anonymous connections is deselected.

    Impact of Workaround: Anonymous users will not have access to the FTP Service.

    How to undo the workaround.

    1. Launch IIS Manager.
    2. Right click Default FTP Site and point to Properties.
    3. Click the SecurityAccounts tab.
    4. Ensure that Allow anonymous connections is selected.
  • Modify NTFS file system permissions to disallow directory creation by FTP users

    This workaround blocks denial of service attacks from authenticated users.

    This workaround blocks known exploits and minimizes the impact of any variations of this attack vector. However, this workaround does not render the vulnerability completely inaccessible to exploitation.

    An administrator can modify NTFS file system permissions on the root directories of FTP sites hosted on a server to disallow creation of directories by FTP users. This modification still allows FTP users to upload files to existing directories. Authenticated and unauthenticated users will not be able to cause a remote code execution with this workaround.

    As administrator, perform the following steps to remove directory creation privileges from the Users group. If you have a configured FTP user or custom group to manage your FTP users, replace the Users group in Step 5 below with these custom identities.

    1. Browse to the root directory of your FTP site. By default this is in %systemroot%\inetpub\ftproot.
    2. Right-click the directory and select Properties.
    3. Click the Security tab and click Advanced.
    4. Click Change Permissions.
    5. Select the Users group and click Edit.
    6. Deselect Create Folders/Append Data.

    Impact of Workaround: FTP users will not be able to create directories through the FTP Service. FTP users will still be able to upload files to existing directories through the FTP Service.

  • Upgrade to FTP Service 7.5

    FTP Service 7.5 is available for Internet Information Services 7.0. This version of FTP Service is not affected by the vulnerabilities described in this bulletin. See the following sites on Download Center:

    Impact of workaround: FTP sites will need to be migrated from FTP Service 6.0 to FTP Service 7.5.

FAQ for IIS FTP Service DoS Vulnerability - CVE-2009-2521

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

What causes the vulnerability? 
This vulnerability is caused by the way that the Microsoft FTP service in IIS handles list commands.

What might an attacker use the vulnerability to do? 
An attacker who successfully exploited this vulnerability could a user’s system to become non-responsive and restart.

How could an attacker exploit the vulnerability? 
An attacker could exploit this vulnerability by sending specially crafted list commands to the server.

What systems are primarily at risk from the vulnerability? 
Server systems running Microsoft File Transfer Protocol Service (FTP).

What does the update do? 
This update modifies the way that the Microsoft FTP server handles list command operations.

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-2009-2521.

When this security bulletin was issued, had Microsoft received any reports that this vulnerability was being exploited? 
Yes. Microsoft is aware of limited, targeted attacks attempting to exploit the vulnerability.

Does applying this security update help protect customers from the code, 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-2009-2521.

A Vulnerability exists in the FTP Service in Microsoft Internet Information Services (IIS) 5.0, Microsoft Internet Information Services (IIS) 5.1, and Microsoft Internet Information Services (IIS) 6.0. The vulnerability could allow remote code execution (RCE) on systems running FTP Service on IIS 5.0, or denial of service (DoS) on systems running FTP Service on IIS 5.1, IIS 6.0.

To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2009-3023.

Mitigating Factors for IIS FTP Service RCE and DoS Vulnerability - CVE-2009-3023

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:

  • FTP Service is not installed by default on all supported editions of Microsoft Windows 2000, Windows XP, Windows Vista, Windows Server 2003, Windows Server 2008 and Windows 7.
  • Internet Information Services 5.1 on Window XP and Internet Information Services 6.0 on Windows Server 2003 are at reduced risk because these versions were compiled using the /GS compiler option. This does not remove the vulnerability but does make exploitation of the vulnerability more difficult and reduces the impact to a denial of service.
  • Internet Information Services 7.0 is not affected by this vulnerability.

Workarounds for IIS FTP Service RCE and DoS Vulnerability - CVE-2009-3023

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 the FTP service

    Disable the FTP service using one of the following procedures:

    • From the command prompt, enter the following command:

      net stop msftpsvc
    • In the Internet Information Services panel, perform the following steps:

      1. Expand your server and right click on the FTP site.
      2. Click Stop.

    Impact of workaround. You will not be able to transfer files using the FTP service.

    How to undo the workaround.

    Re-enable the FTP service using one of the following procedures:

    • From the command prompt, enter the following command:

      net start msftpsvc
    • In the Internet Information Services panel, perform the following steps:

      1. Expand your server and right click on the FTP site.
      2. Click Start.
  • Deny FTP write access to anonymous users

    This workaround blocks remote code execution attacks from anonymous users. With this workaround, all affected versions of IIS are still vulnerable to denial of service attacks from anonymous users.

    This workaround blocks known exploits and minimizes the impact of any variations of this attack vector. However, this workaround does not render the vulnerability completely inaccessible to exploitation.

    Anonymous users are not granted FTP write access by default. If anonymous write access has been granted on an FTP server, the administrator can modify IIS permissions to prevent anonymous write access. Anonymous users will not be able to cause a remote code execution with this workaround.

    To modify IIS permissions to prevent FTP write access to anonymous users, perform the following steps:

    1. Launch IIS Manager.
    2. Right-click Default FTP Site and point to Properties.
    3. Click the Home Directory tab.
    4. Ensure that Write is deselected.

    Impact of workaround: Anonymous users will not have the ability to publish content on the server using the FTP Service.

    How to undo the workaround.

    1. Launch IIS Manager.
    2. Right-click Default FTP Site and point to Properties.
    3. Click the Home Directory tab.
    4. Ensure that Write is selected.
  • Deny FTP access to anonymous users

    This workaround blocks denial of service attacks from unauthenticated users without a valid user account.

    This workaround blocks known exploits and minimizes the impact of any variations of this attack vector. However, this workaround does not render the vulnerability completely inaccessible to exploitation.

    Anonymous users are not granted FTP write access by default. If anonymous write access has been granted on an FTP server, the administrator can modify IIS permissions to prevent anonymous write access. Anonymous users will not be able to exploit the vulnerability with this workaround.

    To modify IIS permissions to prevent FTP write access to anonymous users, perform the following steps:

    1. Launch IIS Manager.
    2. Right click Default FTP Site and point to Properties.
    3. Click the SecurityAccounts tab.
    4. Ensure that Allow anonymous connections is deselected.

    Impact of Workaround: Anonymous users will not have access to the FTP Service.

    How to undo the workaround.

    1. Launch IIS Manager.
    2. Right click Default FTP Site and point to Properties.
    3. Click the SecurityAccounts tab.
    4. Ensure that Allow anonymous connections is selected.
  • Modify NTFS file system permissions to disallow directory creation by FTP users

    This workaround blocks remote code execution attacks from authenticated users. With this workaround, all affected versions of IIS server are still vulnerable to denial of service attacks from authenticated users.

    This workaround blocks known exploits and minimizes the impact of any variations of this attack vector. However, this workaround does not render the vulnerability completely inaccessible to exploitation.

    An administrator can modify NTFS file system permissions on the root directories of FTP sites hosted on a server to disallow creation of directories by FTP users. This modification still allows FTP users to upload files to existing directories. Authenticated and unauthenticated users will not be able to cause a remote code execution with this workaround.

    As administrator, perform the following steps to remove directory creation privileges from the Users group. If you have a configured FTP user or custom group to manage your FTP users, replace the Users group in Step 5 below with these custom identities.

    1. Browse to the root directory of your FTP site. By default this is in %systemroot%\inetpub\ftproot.
    2. Right-click the directory and select Properties.
    3. Click the Security tab and click Advanced.
    4. Click Change Permissions.
    5. Select the Users group and click Edit.
    6. Deselect Create Folders/Append Data.

    Impact of Workaround: FTP users will not be able to create directories through the FTP Service. FTP users will still be able to upload files to existing directories through the FTP Service.

    How to undo the workaround.

    1. Browse to the root directory of your FTP site. By default this is in %systemroot%\inetpub\ftproot.
    2. Right-click the directory and select Properties.
    3. Click the Security tab and click Advanced.
    4. Click Change Permissions.
    5. Select the Users group and click Edit.
    6. Select Create Folders/Append Data.
  • Upgrade to FTP Service 7.5

    FTP Service 7.5 is available for Internet Information Services 7.0. This version of FTP Service is not affected by the vulnerabilities described in this bulletin. See the following sites on Download Center:

    Impact of workaround: FTP sites will need to be migrated from FTP Service 6.0 to FTP Service 7.5.

FAQ for IIS FTP Service RCE and DoS Vulnerability - CVE-2009-3023

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

This is a remote code execution vulnerability on systems running Microsoft Windows 2000 Service Pack 4 and a denial of service vulnerability on all of the other affected platforms. An attacker who successfully exploited this vulnerability in IIS 5.0 on Microsoft Windows 2000 Service Pack 4 could cause remote code execution in the context of LocalSystem. An attacker who successfully exploited this vulnerability on IIS 5.1 and IIS 6.0 could cause the IIS FTP service to stop and become unresponsive.

What causes the vulnerability? 
This vulnerability is caused by the way that the Microsoft FTP service in IIS handles list commands.

What might an attacker use the vulnerability to do? 
An attacker with access to the FTP Service could use this vulnerability to cause a stack-based overrun that could allow execution of arbitrary code in the context of the LocalSystem account on systems running IIS 5.0, or denial of service on affected systems running IIS 5.1 or IIS 6.0. In configurations of FTP Service where anonymous authentication is allowed, the attacker need not be authenticated for exploitation to occur. For more information on the LocalSystem account, see the MSDN article, LocalSystem Account.

How could an attacker exploit the vulnerability? 
An anonymous or authenticated user with access to the FTP service could send FTP NLST commands causing memory corruption and remote code execution on systems running IIS 5.0 on Microsoft Windows 2000 and denial of service on systems running IIS 5.1 or IIS 6.0 on other platforms.

What systems are primarily at risk from the vulnerability? 
Server systems running Microsoft File Transfer Protocol Service (FTP).

What does the update do? 
This update modifies the way that the Microsoft FTP server handles list command operations.

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-2009-3023.

When this security bulletin was issued, had Microsoft received any reports that this vulnerability was being exploited? 
Yes. Microsoft is aware of limited, targeted attacks attempting to exploit the vulnerability.

Does applying this security update help protect customers from the code, 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-2009-3023.

Update Information

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. The Microsoft TechNet Security Web site provides additional information about security in Microsoft products.

Security updates are available from Microsoft Update and Windows Update. Security updates are also available from the Microsoft Download Center. 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. 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.

Note Microsoft discontinued support for Office Update and the Office Update Inventory Tool as of August 1, 2009. To continue getting the latest updates for Microsoft Office products, use Microsoft Update. For more information, see About Microsoft Office Update: Frequently Asked Questions.

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.

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.

The following table provides the MBSA detection summary for this security update.

Software MBSA 2.1
Microsoft Windows 2000 Service Pack 4Yes
Windows XP Service Pack 2 and Windows XP Service Pack 3Yes
Windows XP Professional x64 Edition Service Pack 2Yes
Windows Server 2003 Service Pack 2Yes
Windows Server 2003 x64 Edition Service Pack 2Yes
Windows Server 2003 with SP2 for Itanium-based SystemsYes
Windows Vista, Windows Vista Service Pack 1, and Windows Vista Service Pack 2Yes
Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and Windows Vista x64 Edition Service Pack 2Yes
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2Yes
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2Yes
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2Yes

For more information about MBSA 2.1, see MBSA 2.1 Frequently Asked Questions.

Windows Server Update Services

By using Windows Server Update Services (WSUS), administrators can 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. For more information about how to deploy this security update using Windows Server Update Services, visit the Windows Server Update Services Web site.

Systems Management Server

The following table provides the SMS detection and deployment summary for this security update.

SoftwareSMS 2.0SMS 2003 with SUITSMS 2003 with ITMUConfiguration Manager 2007
Microsoft Windows 2000 Service Pack 4YesYesYesYes
Windows XP Service Pack 2 and Windows XP Service Pack 3YesYesYesYes
Windows XP Professional x64 Edition Service Pack 2NoNoYesYes
Windows Server 2003 Service Pack 2YesYesYesYes
Windows Server 2003 x64 Edition Service Pack 2NoNoYesYes
Windows Server 2003 with SP2 for Itanium-based SystemsNoNoYesYes
Windows Vista, Windows Vista Service Pack 1, and Windows Vista Service Pack 2NoNoSee Note for Windows Vista and Windows Server 2008 belowYes
Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and Windows Vista x64 Edition Service Pack 2NoNoSee Note for Windows Vista and Windows Server 2008 belowYes
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2NoNoSee Note for Windows Vista and Windows Server 2008 belowYes
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2NoNoSee Note for Windows Vista and Windows Server 2008 belowYes
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2NoNoSee Note for Windows Vista and Windows Server 2008 belowYes

For SMS 2.0 and SMS 2003, the Security Update Inventory Tool (SUIT) can be used by SMS to detect security updates. See also Downloads for Systems Management Server 2.0.

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, see SMS 2003 Inventory Tool for Microsoft Updates. For more information about SMS scanning tools, see SMS 2003 Software Update Scanning Tools. See also Downloads for Systems Management Server 2003.

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.

Note for Windows Vista and Windows Server 2008 Microsoft Systems Management Server 2003 with Service Pack 3 includes support for Windows Vista and Windows Server 2008 manageability.

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

For more detailed information, see Microsoft Knowledge Base Article 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 components included with Application Compatibility Toolkit.

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.

Affected Software

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

Windows 2000 (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 may be included in a future update rollup
Deployment
Installing without user interventionWindows2000-kb975254-x86-enu /quiet
Installing without restartingWindows2000-kb975254-x86-enu /norestart
Update log filekb975254.log
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?Yes, you must restart your system after you apply this security update
HotPatchingNot applicable
Removal Information Use Add or Remove Programs tool in Control Panel or the Spuninst.exe utility located in the %Windir%\$NTUninstallKB975254$\Spuninst folder
File Information See Microsoft Knowledge Base Article 975254
Registry Key Verification HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows 2000\SP5\KB975254\Filelist

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, 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.

This security update supports the following setup switches.

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

Removing the Update

This security update supports the following setup switches.

Supported Spuninst.exe Switches
SwitchDescription
/help Displays the command-line options.
Setup Modes
/passive Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart Does not restart when installation has completed.
/forcerestart Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x] Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart 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 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 interventionFor Windows XP Service Pack 2 and Windows XP Service Pack 3:
Windowsxp-kb975254-x86-enu /quiet
For Windows XP Professional x64 Edition Service Pack 2:
WindowsServer2003.WindowsXP-kb975254-x64-enu /quiet
Installing without restartingFor Windows XP Service Pack 2 and Windows XP Service Pack 3:
Windowsxp-kb975254-x86-enu /norestart
For Windows XP Professional x64 Edition Service Pack 2:
WindowsServer2003.WindowsXP-kb975254-x64-enu /norestart
Update log fileKB975254.log
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?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.
HotPatchingNot applicable
Removal Information Use Add or Remove Programs tool in Control Panel or the Spuninst.exe utility located in the %Windir%\$NTUninstallKB975254$\Spuninst
File Information See Microsoft Knowledge Base Article 975254
Registry Key Verification For all supported 32-bit editions of Windows XP:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP\SP4\KB975254\Filelist
For all supported x64-based editions of Windows XP:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP Version 2003\SP3\KB975254\Filelist

Note For supported versions of Windows XP Professional x64 Edition, this security update is the same as supported versions of the Windows Server 2003 x64 Edition security 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.

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, 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.

This security update supports the following setup switches.

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

Removing the Update

This security update supports the following setup switches.

Supported Spuninst.exe Switches
SwitchDescription
/help Displays the command-line options.
Setup Modes
/passive Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart Does not restart when installation has completed
/forcerestart Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x] Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart 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 interventionFor all supported 32-bit editions of Windows Server 2003:
Windowsserver2003-kb975254-x86-enu /quiet
For all supported x64-based editions of Windows Server 2003:
Windowsserver2003.WindowsXP-KB975254-x64-enu /quiet
For all supported Itanium-based editions of Windows Server 2003:
Windowsserver2003-KB975254-ia64-enu /quiet
Installing without restartingFor all supported 32-bit editions of Windows Server 2003:
Windowsserver2003-kb975254-x86-enu /norestart
For all supported x64-based editions of Windows Server 2003:
Windowsserver2003.WindowsXP-KB975254-x64-enu /norestart
For all supported Itanium-based editions of Windows Server 2003:
Windowsserver2003-KB975254-ia64-enu /norestart
Update log fileKB975254.log
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?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.
HotPatchingThis security update does not support HotPatching. For more information about HotPatching, see Microsoft Knowledge Base Article 897341.
Removal Information Use Add or Remove Programs tool in Control Panel or the Spuninst.exe utility located in the %Windir%\$NTUninstallKB975254$\Spuninst folder
File Information See Microsoft Knowledge Base Article 975254
Registry Key Verification HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Server 2003\SP3\KB975254\Filelist

Deployment Information

Installing the Update

When you install this security update, 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 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.

This security update supports the following setup switches.

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

Removing the Update

This security update supports the following setup switches.

Supported Spuninst.exe Switches
SwitchDescription
/help Displays the command-line options.
Setup Modes
/passive Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart Does not restart when installation has completed.
/forcerestart Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x] Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart 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 interventionFor all supported 32-bit editions of Windows Vista:
Windows6.0-KB975254-x86 /quiet

For all supported x64-based editions of Windows Vista:
Windows6.0-KB975254-x64 /quiet
Installing without restartingFor all supported 32-bit editions of Windows Vista:
Windows6.0-KB975254-x86 /quiet /norestart

For all supported x64-based editions of Windows Vista:
Windows6.0-KB975254-x64 /quiet /norestart
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?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.
HotPatchingNot 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 975254
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.

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/?, /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 Start Search.
    2. When the file appears under Programs, right-click on the file name and click Properties.
    3. Under the General tab, compare the file size with the file information tables provided in the bulletin KB article.
    4. You may also click on the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
    5. Finally, you may also click on 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 interventionFor all supported 32-bit editions of Windows Server 2008:
Windows6.0-KB975254-x86 /quiet

For all supported x64-based editions of Windows Server 2008:
Windows6.0-KB975254-x64 /quiet

For all supported Itanium-based editions of Windows Server 2008:
Windows6.0-KB975254-ia64 /quiet
Installing without restartingFor all supported 32-bit editions of Windows Server 2008:
Windows6.0-KB975254-x86 /quiet /norestart

For all supported x64-based editions of Windows Server 2008:
Windows6.0-KB975254-x64 /quiet /norestart

For all supported Itanium-based editions of Windows Server 2008:
Windows6.0-KB975254-ia64 /quiet /norestart
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?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.
HotPatchingNot 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 975254
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.

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/?, /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 Start Search.
    2. When the file appears under Programs, right-click on the file name and click Properties.
    3. Under the General tab, compare the file size with the file information tables provided in the bulletin KB article.
    4. You may also click on the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
    5. Finally, you may also click on 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

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 13, 2009): Bulletin published.
  • V1.1 (October 19, 2009): Removed the acknowledgments section. Corrected the affected software and severity tables to reclassify Windows XP Professional x64 Edition Service Pack 2 as running IIS 6.0.

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

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