MS15-068: Description of the security update for Windows Hyper-V: July 14, 2015

Summary
This security update resolves vulnerabilities in Windows that could allow remote code execution in a host context if a specially crafted application is run by an authenticated and privileged user on a guest virtual machine that is hosted by Hyper-V. An attacker must have valid logon credentials for a guest virtual machine to exploit this vulnerability. To learn more about the vulnerability, see Microsoft Security Bulletin MS15-068.
More information
Important
  • All future security and nonsecurity updates for Windows 8.1 and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your 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.

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 MS15-068 that corresponds to the version of Windows that you are running.
More information

File information

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:
    VersionProductMilestoneService branch
    6.0.6002.18xxxWindows Vista SP2 and Windows Server 2008 SP2SP2GDR
    6.0.6002.23xxxWindows Vista SP2 and Windows Server 2008 SP2SP2LDR
  • 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 x64-based versions of Windows Vista and Windows Server 2008

File nameFile versionFile sizeDateTimePlatform
Vmicvss.dll6.0.6002.19378199,16804-May-201522:33x64
Vmicvss.dll6.0.6002.23684199,16802-May-201515:25x64
Vmicshutdown.dll6.0.6002.19378194,56004-May-201522:33x64
Vmicshutdown.dll6.0.6002.23684194,56002-May-201515:25x64
Vmictimesync.dll6.0.6002.19378197,63204-May-201522:33x64
Vmictimesync.dll6.0.6002.23684197,63202-May-201515:25x64
Vmicheartbeat.dll6.0.6002.19378198,65604-May-201522:33x64
Vmicheartbeat.dll6.0.6002.23684198,65602-May-201515:25x64
Vmickvpexchange.dll6.0.6002.19378259,58404-May-201522:33x64
Vmickvpexchange.dll6.0.6002.23684259,58402-May-201515:25x64

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:
    VersionProductMilestoneService branch
    6.1.7601.18xxxWindows 7 and Windows Server 2008 R2SP1GDR
    6.1.7601.22xxxWindows 7 and Windows Server 2008 R2SP1LDR
  • 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 x64-based versions of Windows 7 and Windows Server 2008 R2

File nameFile versionFile sizeDateTimePlatform
Vmicvss.dll6.1.7601.18844208,38405-May-201520:14x64
Vmicvss.dll6.1.7601.23045208,38405-May-201503:40x64
Vmicshutdown.dll6.1.7601.18844206,84805-May-201520:14x64
Vmicshutdown.dll6.1.7601.23045206,84805-May-201503:40x64
Vmictimesync.dll6.1.7601.18844209,40805-May-201520:14x64
Vmictimesync.dll6.1.7601.23045209,40805-May-201503:40x64
Vmicheartbeat.dll6.1.7601.18844210,43205-May-201520:14x64
Vmicheartbeat.dll6.1.7601.23045210,43205-May-201503:40x64
Vmickvpexchange.dll6.1.7601.18844282,11205-May-201520:14x64
Vmickvpexchange.dll6.1.7601.23045282,11205-May-201503:40x64

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:
    VersionProductMilestoneService branch
    6.2.920 0.16 xxxWindows 8 and Windows Server 2012RTMGDR
    6.2.920 0.20 xxxWindows 8 and Windows Server 2012RTMLDR
  • 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 x64-based versions of Windows 8 and Windows Server 2012

File nameFile versionFile sizeDateTimePlatform
Vmicrdv.dll6.2.9200.17361269,82430-Apr-201516:54x64
Vmicrdv.dll6.2.9200.21473269,82430-Apr-201516:52x64
Vmicvss.dll6.2.9200.17361211,96830-Apr-201517:03x64
Vmicvss.dll6.2.9200.21473211,96830-Apr-201517:01x64
Vmicshutdown.dll6.2.9200.17361238,08030-Apr-201517:03x64
Vmicshutdown.dll6.2.9200.21473238,08030-Apr-201517:01x64
Vmictimesync.dll6.2.9200.17361205,31230-Apr-201517:03x64
Vmictimesync.dll6.2.9200.21473205,31230-Apr-201517:01x64
Vmicheartbeat.dll6.2.9200.17361207,87230-Apr-201517:03x64
Vmicheartbeat.dll6.2.9200.21473207,87230-Apr-201517:01x64
Vmickvpexchange.dll6.2.9200.17361281,60030-Apr-201517:03x64
Vmickvpexchange.dll6.2.9200.21473281,60030-Apr-201517:01x64

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:
    VersionProductMilestoneService branch
    6.3.920 0.16 xxxWindows 8.1 and Windows Server 2012 R2RTMGDR
  • 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 x64-based versions of Windows 8.1 and Windows Server 2012 R2

File nameFile versionFile sizeDateTimePlatform
Vmicrdv.dll6.3.9600.17723154,62409-Mar-201500:20x64
Vmicvss.dll6.3.9600.17723154,62409-Mar-201500:21x64
Vmicshutdown.dll6.3.9600.17723174,59209-Mar-201500:23x64
Vmictimesync.dll6.3.9600.17723145,40809-Mar-201500:23x64
Vmicguestinterface.dll6.3.9600.17723145,92009-Mar-201500:24x64
Vmicheartbeat.dll6.3.9600.17723147,96809-Mar-201500:22x64
Vmickvpexchange.dll6.3.9600.17723206,84809-Mar-201500:25x64

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
update security_patch security_update security bug flaw vulnerability malicious attacker exploit registry unauthenticated buffer overrun overflow specially-formed scope specially-crafted denial of service DoS TSE
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Article ID: 3046339 - Last Review: 07/14/2015 17:26:00 - Revision: 1.0

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 Server 2008 R2 Service Pack 1

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