MS17-008: Description of the security update for Hyper-V: March 14, 2017

Summary

This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an authenticated attacker on a guest operating system runs a specially crafted application that causes the Hyper-V host operating system to execute arbitrary code. Customers who have not enabled the Hyper-V role are not affected.
To learn more about the vulnerability, see Microsoft Security Bulletin MS17-008.

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Important

• 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 Update Catalog

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

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How to obtain help and support for this security update

Help for installing updates: Windows Update FAQ

Security solutions for IT professionals: TechNet Security Support and Troubleshooting

Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure

Local support according to your country: International Support

File InformationFile hash information

File name	SHA1 hash	SHA256 hash
Windows6.0-KB3211306-x64.msu	6C5F30D6C1C17C60AF4B37E28CA3B69E31875D44	0EAD007F90A72240D7445FA1B98CF36000181AD899D000838435B613CFA824A4

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 Vista and Windows Server 2008 file information

Note 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
Hvax64.exe	6.0.6002.18688	651,264	31-Aug-2012	13:52	x64
Hvboot.sys	6.0.6002.18688	108,416	31-Aug-2012	22:01	x64
Hvix64.exe	6.0.6002.18688	672,256	31-Aug-2012	13:52	x64
Virtualization.events.xml	Not applicable	1,384	03-Apr-2009	21:20	Not applicable
Hvax64.exe	6.0.6002.24070	634,368	04-Mar-2017	02:36	x64
Hvboot.sys	6.0.6002.24070	108,264	04-Mar-2017	03:38	x64
Hvix64.exe	6.0.6002.24070	642,048	04-Mar-2017	02:36	x64
Virtualization.events.xml	Not applicable	1,384	07-Mar-2016	23:38	Not applicable
Vmsntfy.dll	6.0.6002.18327	62,464	14-Oct-2010	16:11	x64
Vmswitch.sys	6.0.6002.19747	247,296	04-Mar-2017	02:28	x64
Vmsntfy.dll	6.0.6002.24070	63,488	04-Mar-2017	02:40	x64
Vmswitch.sys	6.0.6002.24070	247,296	04-Mar-2017	02:40	x64