MS15-089: Vulnerability in WebDAV could allow security feature bypass: August 11, 2015

Summary

This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow information disclosure if an attacker forces an encrypted Secure Socket Layer (SSL) 2.0 session and uses a man-in-the-middle (MiTM) attack to decrypt parts of the encrypted traffic. To learn more about the vulnerability, see Microsoft Security Bulletin MS15-089.

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.

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 is 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.

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 MS15-089 that corresponds to the version of Windows that you are running.

More Information

Windows Vista (all editions)Reference table

The following table contains the security update information for this software.

Security update file names

For all supported 32-bit editions of Windows Vista:
Windows6.0-KB3076949-x86.msu

For all supported x64-based editions of Windows Vista:
Windows6.0-KB3076949-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart.

Removal information

WUSA.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 information

See the file information section.

Registry key verification

Note 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 names

For all supported 32-bit editions of Windows Server 2008:
Windows6.0-KB3076949-x86.msu

For all supported x64-based editions of Windows Server 2008:
Windows6.0-KB3076949-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart.

Removal information

WUSA.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 information

See the file information section.

Registry key verification

Note 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 name

For all supported 32-bit editions of Windows 7:
Windows6.1-KB3076949-x86.msu

For all supported x64-based editions of Windows 7:
Windows6.1-KB3076949-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart.

Removal information

To 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 information

See the file information section.

Registry key verification

Note 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 name

For all supported x64-based editions of Windows Server 2008 R2:
Windows6.1-KB3076949-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart.

Removal information

To 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 information

See the file information section.

Registry key verification

Note 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 name

For all supported 32-bit editions of Windows 8:
Windows8-RT-KB3076949-x86.msu

For all supported x64-based editions of Windows 8:
Windows8-RT-KB3076949-x64.msu

For all supported 32-bit editions of Windows 8.1:
Windows8.1-KB3076949-x86.msu

For all supported x64-based editions of Windows 8.1:
Windows8.1-KB3076949-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart.

Removal information

To 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 information

See the file information section.

Registry key verification

Note 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 name

For all supported editions of Windows Server 2012:
Windows8-RT-KB3076949-x64.msu

For all supported editions of Windows Server 2012 R2:
Windows8.1-KB3076949-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart.

Removal information

To 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 information

See the file information section.

Registry key verification

Note A registry key does not exist to validate the presence of this update.

Windows RT and Windows RT 8.1 (all editions)Reference table

The following table contains the security update information for this software.

Deployment

These updates are available through Windows Update only.

Restart requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart.

Removal information

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 information

See the file information section.


File name

SHA1 hash

SHA256 hash

Windows6.1-KB3076949-x86.msu

534060F9BDDB4DBA2C47CD36B9F277369ECD8BEB

9D21818913DBFD1E56C6CBAAEC19F6F67458EE0DE9EE61220E29FC446A66AC78

Windows8.1-KB3076949-arm.msu

BD921E99258E1001ECC3CD023E7651CE43B8EAE8

9357135F6BAEA8A15D53A0A065E42B0E1DE462C917446793A544219190FD4E91

Windows8-RT-KB3076949-arm.msu

D944FAA57AB33A8DA53219CD2DBA411D714A24FA

F04864D34A5161F35E81E5208600C3420EE26EA574C3BCBE9106E21D36F0BFD1

Windows6.1-KB3076949-x86.msu

534060F9BDDB4DBA2C47CD36B9F277369ECD8BEB

9D21818913DBFD1E56C6CBAAEC19F6F67458EE0DE9EE61220E29FC446A66AC78

Windows6.1-KB3076949-x64.msu

13CB56A9879CA98D6644E8357B3FC52C9ACFB785

3359638FE3CF59FF4332B2490339050EAEA2368EA1F64AB21838C6E60DB4165D

Windows8-RT-KB3076949-x86.msu

3E0BA36FDCB0911C66C557C7C1A55877490525DF

0C31DAE892AA39FEF310961CF74C8886AB68E601BD842914C487E7A851C5679F

Windows8-RT-KB3076949-x64.msu

8DADDA02FA80E8F642C9BE33DF88157428AEEC96

A188E2BC097756C475BD73A5EFE2A918483BFB4B7865CCE293DFCBAD94EB21D2

Windows8.1-KB3076949-x86.msu

BAF4582CF62D5627116FB7193A567FB5445CDB00

05A201ABEFC62D07110DCC015FAEBF6B0F329CD2C5334E25A80A147661C5AF27

Windows8.1-KB3076949-x64.msu

B9FAE4CFC9E1B64B612BF9844119ED40747A2DB6

47F67969EC66F81AA6BB305174E63F6283A3CB033AD5A041CFFD40319EB95D0B

Windows8-RT-KB3076949-arm.msu

D944FAA57AB33A8DA53219CD2DBA411D714A24FA

F04864D34A5161F35E81E5208600C3420EE26EA574C3BCBE9106E21D36F0BFD1

Windows8.1-KB3076949-arm.msu

BD921E99258E1001ECC3CD023E7651CE43B8EAE8

9357135F6BAEA8A15D53A0A065E42B0E1DE462C917446793A544219190FD4E91

Windows6.0-KB3076949-x86.msu

BA127E74BA7EDD3863CDE512B855706C807EDB2C

2F2353437CF36625C051DAF991ED9DB7272C1A225F1789B6E643FD4B457B7C07

Windows6.0-KB3076949-x86.msu

BA127E74BA7EDD3863CDE512B855706C807EDB2C

2F2353437CF36625C051DAF991ED9DB7272C1A225F1789B6E643FD4B457B7C07

Windows6.0-KB3076949-x64.msu

70EB7E27870702D8629BD3DF15B353F277398B83

F3930CB112A0783F7AEC3C9458C534F38A80C8398742C475FFBF7C0857C0C7E3

Windows6.0-KB3076949-x64.msu

70EB7E27870702D8629BD3DF15B353F277398B83

F3930CB112A0783F7AEC3C9458C534F38A80C8398742C475FFBF7C0857C0C7E3

Windows6.1-KB3076949-x64.msu

13CB56A9879CA98D6644E8357B3FC52C9ACFB785

3359638FE3CF59FF4332B2490339050EAEA2368EA1F64AB21838C6E60DB4165D

Windows6.1-KB3076949-x64.msu

13CB56A9879CA98D6644E8357B3FC52C9ACFB785

3359638FE3CF59FF4332B2490339050EAEA2368EA1F64AB21838C6E60DB4165D

Windows8-RT-KB3076949-x64.msu

8DADDA02FA80E8F642C9BE33DF88157428AEEC96

A188E2BC097756C475BD73A5EFE2A918483BFB4B7865CCE293DFCBAD94EB21D2

Windows8-RT-KB3076949-x86.msu

3E0BA36FDCB0911C66C557C7C1A55877490525DF

0C31DAE892AA39FEF310961CF74C8886AB68E601BD842914C487E7A851C5679F

Windows8-RT-KB3076949-x64.msu

8DADDA02FA80E8F642C9BE33DF88157428AEEC96

A188E2BC097756C475BD73A5EFE2A918483BFB4B7865CCE293DFCBAD94EB21D2

Windows8-RT-KB3076949-x86.msu

3E0BA36FDCB0911C66C557C7C1A55877490525DF

0C31DAE892AA39FEF310961CF74C8886AB68E601BD842914C487E7A851C5679F

Windows8.1-KB3076949-x64.msu

B9FAE4CFC9E1B64B612BF9844119ED40747A2DB6

47F67969EC66F81AA6BB305174E63F6283A3CB033AD5A041CFFD40319EB95D0B

Windows8.1-KB3076949-x86.msu

BAF4582CF62D5627116FB7193A567FB5445CDB00

05A201ABEFC62D07110DCC015FAEBF6B0F329CD2C5334E25A80A147661C5AF27

Windows8.1-KB3076949-x86.msu

BAF4582CF62D5627116FB7193A567FB5445CDB00

05A201ABEFC62D07110DCC015FAEBF6B0F329CD2C5334E25A80A147661C5AF27

Windows8.1-KB3076949-x64.msu

B9FAE4CFC9E1B64B612BF9844119ED40747A2DB6

47F67969EC66F81AA6BB305174E63F6283A3CB033AD5A041CFFD40319EB95D0B

Windows6.0-KB3076949-x86.msu

BA127E74BA7EDD3863CDE512B855706C807EDB2C

2F2353437CF36625C051DAF991ED9DB7272C1A225F1789B6E643FD4B457B7C07

Windows6.0-KB3076949-x64.msu

70EB7E27870702D8629BD3DF15B353F277398B83

F3930CB112A0783F7AEC3C9458C534F38A80C8398742C475FFBF7C0857C0C7E3



The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.


Windows Vista and Windows Server 2008 file information

  • The files that apply to a specific product, milestone (SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.0.6002.18xxx

    Windows Vista SP2 and Windows Server 2008 SP2

    SP2

    GDR

    6.0.6002.23xxx

    Windows Vista SP2 and Windows Server 2008 SP2

    SP2

    LDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

For all supported x86-based versions of Windows Vista and Windows Server 2008

File name

File version

File size

Date

Time

Platform

Webclnt.dll

6.0.6002.19433

199,680

01-Jul-2015

15:57

x86

Webclnt.dll

6.0.6002.23739

199,680

01-Jul-2015

15:31

x86

For all supported x64-based versions of Windows Vista and Windows Server 2008

File name

File version

File size

Date

Time

Platform

Webclnt.dll

6.0.6002.19433

218,112

01-Jul-2015

15:43

x64

Webclnt.dll

6.0.6002.23739

218,624

01-Jul-2015

15:24

x64

Webclnt.dll

6.0.6002.19433

199,680

01-Jul-2015

15:57

x86

Webclnt.dll

6.0.6002.23739

199,680

01-Jul-2015

15:31

x86

Windows 7 and Windows Server 2008 R2 file information

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.1.7601.18xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    GDR

    6.1.7601.22xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    LDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Davclnt.dll

6.1.7601.18912

82,432

01-Jul-2015

20:30

x86

Davclnt.dll

6.1.7601.23115

87,552

01-Jul-2015

17:52

x86

Webclnt.dll

6.1.7601.18912

206,848

01-Jul-2015

20:30

x86

Webclnt.dll

6.1.7601.23115

209,920

01-Jul-2015

17:52

x86

For all supported x64-based versions of Windows 7 and Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Davclnt.dll

6.1.7601.18912

102,912

01-Jul-2015

20:48

x64

Davclnt.dll

6.1.7601.23115

109,056

01-Jul-2015

18:20

x64

Webclnt.dll

6.1.7601.18912

260,096

01-Jul-2015

20:49

x64

Webclnt.dll

6.1.7601.23115

264,704

01-Jul-2015

18:21

x64

Davclnt.dll

6.1.7601.18912

82,432

01-Jul-2015

20:30

x86

Davclnt.dll

6.1.7601.23115

87,552

01-Jul-2015

17:52

x86

Webclnt.dll

6.1.7601.18912

206,848

01-Jul-2015

20:30

x86

Webclnt.dll

6.1.7601.23115

209,920

01-Jul-2015

17:52

x86

Windows 8 and Windows Server 2012 file information

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.2.920 0.16 xxx

    Windows 8 and Windows Server 2012

    RTM

    GDR

    6.2.920 0.20 xxx

    Windows 8 and Windows Server 2012

    RTM

    LDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

For all supported x86-based versions of Windows 8

File name

File version

File size

Date

Time

Platform

Davclnt.dll

6.2.9200.17428

86,016

01-Jul-2015

11:41

x86

Davclnt.dll

6.2.9200.21538

86,016

01-Jul-2015

10:54

x86

Webclnt.dll

6.2.9200.17428

198,656

01-Jul-2015

11:42

x86

Webclnt.dll

6.2.9200.21538

199,168

01-Jul-2015

10:55

x86

For all supported x64-based versions of Windows 8 and Windows Server 2012

File name

File version

File size

Date

Time

Platform

Davclnt.dll

6.2.9200.17428

104,448

01-Jul-2015

12:58

x64

Davclnt.dll

6.2.9200.21538

104,448

01-Jul-2015

11:39

x64

Webclnt.dll

6.2.9200.17428

227,328

01-Jul-2015

13:00

x64

Webclnt.dll

6.2.9200.21538

227,840

01-Jul-2015

11:41

x64

Davclnt.dll

6.2.9200.17428

86,016

01-Jul-2015

11:41

x86

Davclnt.dll

6.2.9200.21538

86,016

01-Jul-2015

10:54

x86

Davclnt.dll

6.2.9200.17428

86,016

01-Jul-2015

11:41

x86

Davclnt.dll

6.2.9200.21538

86,016

01-Jul-2015

10:54

x86

Webclnt.dll

6.2.9200.17428

198,656

01-Jul-2015

11:42

x86

Webclnt.dll

6.2.9200.21538

199,168

01-Jul-2015

10:55

x86

Windows 8.1 and Windows Server 2012 R2 file information

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.3.920 0.16 xxx

    Windows 8.1 and Windows Server 2012 R2

    RTM

    GDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.


For all supported x86-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Davclnt.dll

6.3.9600.17923

87,040

01-Jul-2015

21:35

x86

Webclnt.dll

6.3.9600.17923

198,656

01-Jul-2015

21:37

x86

For all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Davclnt.dll

6.3.9600.17923

104,448

01-Jul-2015

22:16

x64

Webclnt.dll

6.3.9600.17923

228,864

01-Jul-2015

22:19

x64

Davclnt.dll

6.3.9600.17923

87,040

01-Jul-2015

21:35

x86

Davclnt.dll

6.3.9600.17923

87,040

01-Jul-2015

21:35

x86

Webclnt.dll

6.3.9600.17923

198,656

01-Jul-2015

21:37

x86


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