MS16-114: Description of the security update for Windows SMBv1 Server: September 13, 2016

Applies To
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 Datacenter Windows Server 2012 Standard Windows Server 2012 Standard Windows Server 2012 Essentials Windows Server 2012 Foundation Windows Server 2012 Foundation Windows Server 2008 R2 Service Pack 1 Windows Server 2008 R2 Datacenter Windows Server 2008 R2 Enterprise Windows Server 2008 R2 Standard Windows Server 2008 R2 Web Edition Windows Server 2008 R2 Foundation Windows 7 Service Pack 1 Windows 7 Ultimate Windows 7 Enterprise Windows 7 Professional Windows 7 Home Premium Windows 7 Home Basic Windows 7 Starter Windows Server 2008 Service Pack 2 Windows Server 2008 Datacenter Windows Server 2008 Enterprise Windows Server 2008 Standard Windows Server 2008 Web Edition Windows Server 2008 Foundation Windows Server 2008 for Itanium-Based Systems Windows Vista Service Pack 2 Windows Vista Ultimate Windows Vista Enterprise Windows Vista Business Windows Vista Home Premium Windows Vista Home Basic Windows Vista Starter

Summary

This security update resolves a vulnerability in Microsoft Windows. On Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2 operating systems, the vulnerability could allow remote code execution if an authenticated attacker sends specially crafted packets to an affected Microsoft Server Message Block 1.0 (SMBv1) Server. The vulnerability does not impact other SMB Server versions. Although later operating systems are affected, the potential impact is denial of service.

To learn more about the vulnerability, see Microsoft Security Bulletin MS16-114.

More Information

Nonsecurity fixes that are included in this security update

  • When you try to access a domain DFS namespace (such as \\contoso.com\SYSVOL) from a computer that is configured to require mutual authentication (by using the UNC Hardened Access feature), a 0xE3 Stop error may occur on the selected domain controller if the selected domain controller is running Windows Server 2008 and has security update 3161561 installed, and the SmbServerNameHardeningLevel registry entry is configured to a nonzero value on the server.
  • You may receive a Stop 07xE error in SMB when you run many copy operations on the server-side.

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.

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 8.1, this update is available through Windows Update only.

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Method 3: 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 MS16-114 that corresponds to the version of Windows that you are running.

More Information

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

File Information

File hash information
File name SHA1 hash SHA256 hash
Windows8.1-KB3177186-x86.msu 80602984B34110886BFF51EDB1F4222FF3B1CF9B ADF0C5136DCA787F6019023DD9C46F55DADA3CCB0F7F6484B8C13C3421F13A7A
Windows8.1-KB3177186-arm.msu D94A70BBFFC60BA6B81B343108989FFCD9115744 020D50C6202CE8792327A986C982502CF13F3A83C707244E9FCC8E8ECFD81F9B
Windows6.1-KB3177186-ia64.msu B596DBEA5EB80EE3080DE3F2F65662025DC3C7B9 DA53BBF40359B559D6F2F025E898D4D0534703AE04B1E9937A91CC1E22573551
Windows6.1-KB3177186-x86.msu 960DE3A99AF2325BC43EEBA8437049672C77B69C F6D61A038EA4C091136AC06BD8CF12F7E605ACC4C36DB471D259206D935FDAC7
Windows6.1-KB3177186-x64.msu 90E086893DF2AF9FBE85831705C3FD4DC5141390 58E0CD6C82EA2B82C80B6560283BEB2B1E76080C6B155B3D3A1DEAACB636D77C
Windows8.1-KB3177186-x64.msu 2366E07F485AE12A2237EB5BDCC5D1809C85484D ED648BF1FE40D5C3C7FEC8499F5288430578119A4925E04826FBF733A68579FF
Windows6.0-KB3177186-ia64.msu 8343BAC77E336553023691D2185CECB7067C0D1A 5D2350F64501DBFC27DDEE448AAFD5F4BDDF3C0C83249E717210CFD5A857CE08
Windows8-RT-KB3177186-x64.msu AAD2183DA056282D38E44F19F107DB4F2A3B7011 78748EB0C1F59D15FEA721495DB827F1F9C20D6381CE12C5774EA6ED3AFB11A4
Windows6.0-KB3177186-x86.msu D0ECEBB986CA7D75F625200180F4B44D9C0F2015 8531DDE49D54A19678B66285F7BA5E2770B81D1DBF587E5A80F9202A171A46AB
Windows6.0-KB3177186-x64.msu 8E700FB6BF1381BBA00E9FAB535B92F0D0B55EAE F148E1F9C851B24CDBBCD5A1CC71C604662BED8EB6DA338D6B53C3539955DC64

      

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2 file information

Notes

  • 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
    6.3.960 0.16 xxx Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 RTM GDR
    6.3.960 0.17 xxx Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 RTM GDR
    6.3.960 0.18 xxx Windows RT 8.1, 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.

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

For all supported x86-based versions

File name File version File size Date Time Platform
Srvnet.sys 6.3.9600.18431 186,880 03-Aug-2016 17:07 x86
Srv.sys 6.3.9600.18432 336,896 04-Aug-2016 14:17 x86
Srv2.sys 6.3.9600.18431 562,176 03-Aug-2016 17:07 x86

For all supported ARM-based versions

File name File version File size Date Time Platform
Srvnet.sys 6.3.9600.18431 174,592 03-Aug-2016 16:45 Not applicable
Srv.sys 6.3.9600.18432 306,176 04-Aug-2016 14:16 Not applicable
Srv2.sys 6.3.9600.18431 521,216 03-Aug-2016 16:45 Not applicable

For all supported x64-based versions

File name File version File size Date Time Platform
Srvnet.sys 6.3.9600.18431 243,712 03-Aug-2016 18:05 x64
Srv.sys 6.3.9600.18432 416,768 04-Aug-2016 14:17 x64
Srv2.sys 6.3.9600.18431 675,328 03-Aug-2016 18:06 x64

Windows 7 and Windows Server 2008 R2 file information

Notes

  • 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
    6.1.760 1.18xxx Windows 7 or Windows Server 2008 R2 SP1 GDR
    6.1.760 1.23 xxx Windows 7 or 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.

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

For all supported ia64-based versions

File name File version File size Date Time Platform
Srvnet.sys 6.1.7601.23517 351,232 12-Aug-2016 16:13 IA-64
Srv.sys 6.1.7601.23517 1,028,096 12-Aug-2016 16:14 IA-64
Srv2.sys 6.1.7601.23517 798,720 12-Aug-2016 16:13 IA-64

For all supported x86-based versions

File name File version File size Date Time Platform
Srvnet.sys 6.1.7601.23517 116,224 12-Aug-2016 16:21 x86
Srv.sys 6.1.7601.23517 310,784 12-Aug-2016 16:21 x86
Srv2.sys 6.1.7601.23517 313,856 12-Aug-2016 16:21 x86

For all supported x64-based versions

File name File version File size Date Time Platform
Srvnet.sys 6.1.7601.23517 168,960 12-Aug-2016 16:26 x64
Srv.sys 6.1.7601.23517 464,896 12-Aug-2016 16:26 x64
Srv2.sys 6.1.7601.23517 405,504 12-Aug-2016 16:26 x64

Windows Vista and Windows Server 2008 file information

Notes

  • 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
    6.0.600 2.19xxx Windows Vista or Windows Server 2008 SP2 GDR
    6.0.600 2.23xxx Windows Vista or Windows Server 2008 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.

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

For all supported ia64-based versions

File name File version File size Date Time Platform
Netevent.dll 6.0.6002.19673 17,920 03-Aug-2016 15:35 IA-64
Netevent.dll 6.0.6002.24000 17,920 03-Aug-2016 20:57 IA-64
Srvnet.sys 6.0.6002.19673 297,984 03-Aug-2016 14:20 IA-64
Srvnet.sys 6.0.6002.24000 297,984 03-Aug-2016 20:03 IA-64
Srv.sys 6.0.6002.19673 966,144 03-Aug-2016 14:20 IA-64
Srv.sys 6.0.6002.24000 968,192 03-Aug-2016 20:03 IA-64
Srv2.sys 6.0.6002.19673 468,480 03-Aug-2016 14:20 IA-64
Srv2.sys 6.0.6002.24000 474,624 03-Aug-2016 20:03 IA-64
Netevent.dll 6.0.6002.19673 17,920 03-Aug-2016 15:45 x86
Netevent.dll 6.0.6002.24000 17,920 03-Aug-2016 21:04 x86

For all supported x86-based versions

File name File version File size Date Time Platform
Netevent.dll 6.0.6002.19673 17,920 03-Aug-2016 15:45 x86
Netevent.dll 6.0.6002.24000 17,920 03-Aug-2016 21:04 x86
Srvnet.sys 6.0.6002.19673 103,936 03-Aug-2016 14:20 x86
Srvnet.sys 6.0.6002.24000 103,936 03-Aug-2016 20:04 x86
Srv.sys 6.0.6002.19673 304,128 03-Aug-2016 14:21 x86
Srv.sys 6.0.6002.24000 304,640 03-Aug-2016 20:05 x86
Srv2.sys 6.0.6002.19673 146,432 03-Aug-2016 14:20 x86
Srv2.sys 6.0.6002.24000 147,968 03-Aug-2016 20:04 x86

For all supported x64-based versions

File name File version File size Date Time Platform
Netevent.dll 6.0.6002.19673 17,920 03-Aug-2016 16:23 x64
Netevent.dll 6.0.6002.24000 17,920 03-Aug-2016 21:27 x64
Srvnet.sys 6.0.6002.19673 147,456 03-Aug-2016 14:40 x64
Srvnet.sys 6.0.6002.24000 147,968 03-Aug-2016 20:25 x64
Srv.sys 6.0.6002.19673 451,072 03-Aug-2016 14:41 x64
Srv.sys 6.0.6002.24000 450,048 03-Aug-2016 20:25 x64
Srv2.sys 6.0.6002.19673 176,128 03-Aug-2016 14:40 x64
Srv2.sys 6.0.6002.24000 178,176 03-Aug-2016 20:25 x64
Netevent.dll 6.0.6002.19673 17,920 03-Aug-2016 15:45 x86
Netevent.dll 6.0.6002.24000 17,920 03-Aug-2016 21:04 x86

Windows Server 2012 file information

Notes

  • 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 0.17xxx Windows 8, Windows RT, or Windows Server 2012 RTM GDR
    6.2.920 0.21xxx Windows 8, Windows RT, or 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.

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

For all supported x64-based versions

File name File version File size Date Time Platform
Srvnet.sys 6.2.9200.21954 250,880 11-Aug-2016 19:56 x64
Srv.sys 6.2.9200.21954 421,376 11-Aug-2016 19:58 x64
Srv2.sys 6.2.9200.21954 673,792 11-Aug-2016 19:58 x64