MS15-122: Security update for Kerberos to address security feature bypass: November 10, 2015

Summary
This security update resolves a security feature bypass in Microsoft Windows. An attacker could bypass Kerberos authentication on a computer and decrypt drives that have BitLocker enabled. The bypass can be exploited only if the computer has BitLocker enabled without a PIN or USB key, the computer is domain joined, and the attacker has physical access to the computer.

To learn more about the vulnerability, see Microsoft Security Bulletin MS15-122.
More information
Important
  • All future security and nonsecurity 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.
More information about this security update
The following articles contain more information about this security update as it relates to individual product versions. The articles may contain known issue information.
  • 3101246 MS15-122: Description of the security update for Windows Kerberos: November 10, 2015
  • 3105213 Cumulative update for Windows 10: November 10, 2015
  • 3105211 Cumulative update for Windows 10 Version 1511: November 10, 2015
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, see Get security updates automatically.

Note For Windows RT and 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 MS15-122 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-KB3101246-x86.msu

For all supported x64-based editions of Windows Vista:
Windows6.0-KB3101246-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 that is installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates, and then select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3101246
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-KB3101246-x86.msu

For all supported x64-based editions of Windows Server 2008:
Windows6.0-KB3101246-x64.msu

For all supported Itanium-based editions of Windows Server 2008:
Windows6.0-KB3101246-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 that is installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates, and then select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3101246
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-KB3101246-x86.msu

For all supported x64-based editions of Windows 7:
Windows6.1-KB3101246-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 that is installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, and then click System and Security. Under Windows Update, click View installed updates, and then select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3101246
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-KB3101246-x64.msu

For all supported Itanium-based editions of Windows Server 2008 R2:
Windows6.1-KB3101246-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 that is installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, and then click System and Security. Under Windows Update, click View installed updates, and then select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3101246
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows 8 and 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:
Windows8-RT-KB3101246-x86.msu

For all supported x64-based editions of Windows 8:
Windows8-RT-KB3101246-x64.msu

For all supported 32-bit editions of Windows 8.1:
Windows8.1-KB3101246-x86.msu

For all supported x64-based editions of Windows 8.1:
Windows8.1-KB3101246-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 that is installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, click System and Security, and then click Windows Update. Under See also, click Installed updates, and then select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3101246
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-KB3101246-x64.msu

For all supported editions of Windows Server 2012 R2:
Windows8.1-KB3101246-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 that is installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, click System and Security, and then click Windows Update. Under See also, click Installed updates, and then select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3101246
Registry key verificationNote A registry key does not exist to validate the presence of this update.


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-KB3105213-x86.msu

For all supported x64-based editions of Windows 10:
Windows10.0-KB3105213-x64.msu

For all supported 32-bit editions of Windows 10 Version 1511:
Windows10.0-KB3105211-x86.msu

For all supported x64-based editions of Windows 10 Version 1511:
Windows10.0-KB3105211-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 that is installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, click System and Security, and then click Windows Update. Under See also, click Installed updates, and then select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3105213
Registry key verificationNote A registry key does not exist to validate the presence of this update.

File hash information

Package NamePackage Hash SHA 1Package Hash SHA 2
Windows6.1-KB3101246-x86.msu8DBBFF07ACFD2527E11278C5244FFFB3A5AB98D251EB2BC6E50939F0EF629EDE02F9EA7B94FB3DF0BECF258011B26F5FFB060AA5
Windows6.1-KB3101246-x64.msuDD54CDBAE8A78634F7811D532BB33B7651D8BCA0BB033BB00FE625BD14E051E5781DB531FC8DDE4E4AE1A8BE60769274C7C207E2
Windows8-RT-KB3101246-x86.msu029C4F3EEB37C6C3F23EB4759A25D961B1412072190DF15FFB4882897009043C87D913D965E045ADF34E0EBAE0DF7F82C9BD51F2
Windows8-RT-KB3101246-x64.msu471AE473E52E44F080B8F10A4D9A419619EA04B0C4FD66EB48CEB202EF464978DC5E2EA9E7A2B683C2C9BF987A8CFA9B1C950483
Windows8.1-KB3101246-x86.msu78B558E3B8D6BDD3B51266AB35A2821FCE96AEA6E0B9B83E78A0E1561FC9E85E7E1F567269DA8CB59C46064E090F904EC697FF5D
Windows8.1-KB3101246-x64.msu7C07350E0AAB83DD9DE6EE64404CD87AC3787B696E25F6AB83604AEC497D3BCB38705E196A93D7BC10E27ED491D7DD04236B434C
Windows8-RT-KB3101246-arm.msuE2A8ABB2CFC35641B6FFECBD9C2D6185B72D36CAB3EF599DDEAF261EBA624895C46438B67AB21E8C55005D678B78B31A070CC295
Windows8.1-KB3101246-arm.msuBD94F5C9A9C630510ED61902873A550ABD284D69E412D04C3E639D00264D8410E9B0884CA6F324639E8DA9F99DD6F78C6B3F0637
Windows6.0-KB3101246-x86.msu20B408C5A33759B02342F0BA608D320938B5DC87454D38872FEB4B308A9AAF3CC74525C55394CF0453B2B58AC88853AB3FA4E4D5
Windows6.0-KB3101246-x86.msu20B408C5A33759B02342F0BA608D320938B5DC87454D38872FEB4B308A9AAF3CC74525C55394CF0453B2B58AC88853AB3FA4E4D5
Windows6.0-KB3101246-ia64.msu38B1C93A2D2BF3F271719F48EF672AF29EF89B9C4713B645576D6EC3168307AB7AA036F8BE2008C9185BFBB3CC4A528C48553BA6
Windows6.0-KB3101246-x64.msuABF282EAADA0775D26BC4D789A1EE431EC40B917BFB736C090C7D31F895808920A2D488C19C0F362993606941CD07C63D16F6D38
Windows6.0-KB3101246-x64.msuABF282EAADA0775D26BC4D789A1EE431EC40B917BFB736C090C7D31F895808920A2D488C19C0F362993606941CD07C63D16F6D38
Windows6.1-KB3101246-ia64.msu45A5B90000D364B2B8CB60305A57F7327FFB62CCCCB92A571D1B70E5FD684FF9E2426F1A7E7DADD7B5259ACEF07D608F51CC9459
Windows6.1-KB3101246-x64.msuDD54CDBAE8A78634F7811D532BB33B7651D8BCA0BB033BB00FE625BD14E051E5781DB531FC8DDE4E4AE1A8BE60769274C7C207E2
Windows6.1-KB3101246-x64.msuDD54CDBAE8A78634F7811D532BB33B7651D8BCA0BB033BB00FE625BD14E051E5781DB531FC8DDE4E4AE1A8BE60769274C7C207E2
Windows8-RT-KB3101246-x64.msu471AE473E52E44F080B8F10A4D9A419619EA04B0C4FD66EB48CEB202EF464978DC5E2EA9E7A2B683C2C9BF987A8CFA9B1C950483
Windows8-RT-KB3101246-x64.msu471AE473E52E44F080B8F10A4D9A419619EA04B0C4FD66EB48CEB202EF464978DC5E2EA9E7A2B683C2C9BF987A8CFA9B1C950483
Windows8.1-KB3101246-x64.msu7C07350E0AAB83DD9DE6EE64404CD87AC3787B696E25F6AB83604AEC497D3BCB38705E196A93D7BC10E27ED491D7DD04236B434C
Windows8.1-KB3101246-x64.msu7C07350E0AAB83DD9DE6EE64404CD87AC3787B696E25F6AB83604AEC497D3BCB38705E196A93D7BC10E27ED491D7DD04236B434C
Windows6.0-KB3101246-x86.msu20B408C5A33759B02342F0BA608D320938B5DC87454D38872FEB4B308A9AAF3CC74525C55394CF0453B2B58AC88853AB3FA4E4D5
Windows6.0-KB3101246-x64.msuABF282EAADA0775D26BC4D789A1EE431EC40B917BFB736C090C7D31F895808920A2D488C19C0F362993606941CD07C63D16F6D38

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
Vlastnosti

ID článku: 3105256 - Poslední kontrola: 11/10/2015 18:12:00 - Revize: 1.0

Windows 10, 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 8 Enterprise, Windows 8 Pro, Windows 8, Windows RT, 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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