MS16-072: Security update for Group Policy: June 14, 2016

Summary
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker launches a man-in-the-middle (MiTM) attack against the traffic passing between a domain controller and the target machine.

To learn more about the vulnerability, see Microsoft Security Bulletin MS16-072.
More information
Important
  • All future security and non-security updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.
  • If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.
Additional information about this security update
The following articles contain additional information about this security update as it relates to individual product versions. The articles may contain known issue information.
  • 3159398 MS16-072: Description of the security update for Group Policy: June 14, 2016
  • 3163017 Cumulative update for Windows 10: June 14, 2016
  • 3163018 Cumulative update for Windows 10 Version 1511 and Windows Server 2016 Technical Preview 4: June 14, 2016
Known issues
MS16-072 changes the security context with which user group policies are retrieved. This by-design behavior change protects customers’ computers from a security vulnerability. Before MS16-072 is installed, user group policies were retrieved by using the user’s security context. After MS16-072 is installed, user group policies are retrieved by using the computer's security context. This issue is applicable for the following KB articles:
  • 3159398 MS16-072: Description of the security update for Group Policy: June 14, 2016
  • 3163017 Cumulative update for Windows 10: June 14, 2016
  • 3163018 Cumulative update for Windows 10 Version 1511 and Windows Server 2016 Technical Preview 4: June 14, 2016
  • 3163016 Cumulative Update for Windows Server 2016 Technical Preview 5: June 14 2016

Symptoms

All user Group Policy, including those that have been security filtered on user accounts or security groups, or both, may fail to apply on domain joined computers.

Cause

This issue may occur if the Group Policy Object is missing the Read permissions for the Authenticated Users group or if you are using security filtering and are missing Read permissions for the domain computers group.

Resolution

To resolve this issue, use the Group Policy Management Console (GPMC.MSC) and follow one of the following steps:
  • Add the Authenticated Users group with Read Permissions on the Group Policy Object (GPO).
  • If you are using security filtering, add the Domain Computers group with read permission.

How to obtain and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, seeGet security updates automatically.

Note For Windows RT 8.1, this update is available through Windows Update only.

Method 2: Microsoft Download Center

You can obtain the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

Click the download link in Microsoft Security Bulletin MS16-072 that corresponds to the version of Windows that you are running.
More information

Security update deployment information

Windows Vista (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file namesFor all supported 32-bit editions of Windows Vista:
Windows6.0-KB3159398-x86.msu
For all supported x64-based editions of Windows Vista:
Windows6.0-KB3159398-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementA system restart is required after you apply this security update.
Removal informationWUSA.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 informationSee Microsoft Knowledge Base Article 3159398
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows Server 2008 (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file namesFor all supported 32-bit editions of Windows Server 2008:
Windows6.0-KB3159398-x86.msu
For all supported x64-based editions of Windows Server 2008:
Windows6.0-KB3159398-x64.msu
For all supported Itanium-based editions of Windows Server 2008:
Windows6.0-KB3159398-ia64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementA system restart is required after you apply this security update.
Removal informationWUSA.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 informationSee Microsoft Knowledge Base Article 3159398
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows 7 (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported 32-bit editions of Windows 7:
Windows6.1-KB3159398-x86.msu
For all supported x64-based editions of Windows 7:
Windows6.1-KB3159398-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementA system restart is required after you apply this security update.
Removal informationTo 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 informationSee Microsoft Knowledge Base Article 3159398
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows Server 2008 R2 (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported x64-based editions of Windows Server 2008 R2:
Windows6.1-KB3159398-x64.msu
For all supported Itanium-based editions of Windows Server 2008 R2:
Windows6.1-KB3159398-ia64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementA system restart is required after you apply this security update.
Removal informationTo 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 informationSee Microsoft Knowledge Base Article 3159398
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows 8.1 (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported 32-bit editions of Windows 8.1:
Windows8.1-KB3159398-x86.msu
For all supported x64-based editions of Windows 8.1:
Windows8.1-KB3159398-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementA system restart is required after you apply this security update.
Removal informationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3159398
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows Server 2012 and Windows Server 2012 R2 (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported editions of Windows Server 2012:
Windows8-RT-KB3159398-x64.msu
For all supported editions of Windows Server 2012 R2:
Windows8.1-KB3159398-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementA system restart is required after you apply this security update.
Removal informationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3159398
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows RT 8.1 (all editions)

Reference Table

The following table contains the security update information for this software.
DeploymentThese updates are available via Windows Update only.
Restart RequirementA system restart is required after you apply this security update.
Removal InformationClick Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File InformationSee Microsoft Knowledge Base Article 3159398

Windows 10 (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported 32-bit editions of Windows 10:
Windows10.0-KB3163017-x86.msu
For all supported x64-based editions of Windows 10:
Windows10.0-KB3163017-x64.msu
For all supported 32-bit editions of Windows 10 Version 1511:
Windows10.0-KB3163018-x86.msu
For all supported x64-based editions of Windows 10 Version 1511:
Windows10.0-KB3163018-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementA system restart is required after you apply this security update.
Removal informationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3163017
See Microsoft Knowledge Base Article 3163018
Registry key verificationNote A registry key does not exist to validate the presence of this update.

How to obtain help and support for this security update

Help for installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help for protecting your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support
malicious attacker exploit
Properties

Article ID: 3163622 - Last Review: 06/16/2016 21:06:00 - Revision: 4.0

Windows 10, Windows 10 Version 1511, Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Standard, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows 8.1 Enterprise, Windows 8.1 Pro, Windows 8.1, Windows RT 8.1, Windows Server 2012 Datacenter, Windows Server 2012 Standard, Windows Server 2012 Essentials, Windows Server 2012 Foundation, Windows Server 2008 R2 Service Pack 1, Windows 7 Service Pack 1, Windows Server 2008 Service Pack 2, Windows Vista Service Pack 2

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