Summary
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow denial of service if an authenticated attacker runs a specially crafted application in a virtual machine (VM) session. Notice that the denial of service does not allow an attacker to execute code or elevate user rights on other VMs that are running on the Hyper-V host. However, the issue could cause other VMs on the host not to be manageable in Virtual Machine Manager.
Introduction
Microsoft has released security bulletin MS15-042. To learn more about this security bulletin:
Home users:
https://www.microsoft.com/security/pc-security/updates.aspx Skip the details: Download the updates for your home computer or laptop from the Microsoft Update website now:
IT professionals:
How to obtain help and support for this security update
Help installing updates:
Support for Microsoft Update
Security solutions for IT professionals:
TechNet Security Troubleshooting and Support
Help protect your Windows-based computer from viruses and malware:
Virus Solution and Security Center
Local support according to your country:
International Support
More Information
Known issues in this security update
After you install this security update, you may find that old file location cleanup operations are affected when you run a storage migration of Cluster Shared Volume (CSV). To resolve this issue, install vmms.exe version 6.3.9600.17787, included in update 3037313. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
3037313 Old files are not removed after a migration of virtual machine storage in Windows 8.1 or Windows Server 2012 R2
Security update deployment information
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 x64-based editions of Windows 8.1: Windows8.1-KB3047234-x64.msu |
|---|---|
| Installation switches | See Microsoft Knowledge Base Article 934307 |
| Restart requirement | Yes, you must restart your system after you apply this security update. |
| Removal information | To uninstall an update that is installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, click System and Security, click Windows Update, and 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 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 R2: Windows8.1-KB3047234-x64.msu |
|---|---|
| Installation switches | See Microsoft Knowledge Base Article 934307 |
| Restart requirement | Yes, you must restart your system after you apply this security update. |
| Removal information | To uninstall an update installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, click System and Security, click Windows Update, and 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. |
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 8.1 and Windows Server 2012 R2 file information
For all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Vmms.exe.mui | 6.3.9600.17039 | 861,184 | 04-Mar-2014 | 18:07 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 851,968 | 04-Mar-2014 | 18:06 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 980,992 | 04-Mar-2014 | 17:59 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 997,888 | 04-Mar-2014 | 18:06 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 784,384 | 04-Mar-2014 | 11:29 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 937,984 | 04-Mar-2014 | 18:02 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 815,104 | 04-Mar-2014 | 18:06 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 953,344 | 04-Mar-2014 | 18:07 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 884,736 | 04-Mar-2014 | 18:06 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 921,088 | 04-Mar-2014 | 18:06 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 482,304 | 04-Mar-2014 | 18:06 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 485,376 | 04-Mar-2014 | 18:04 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 834,560 | 04-Mar-2014 | 18:02 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 894,464 | 04-Mar-2014 | 18:03 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 922,112 | 04-Mar-2014 | 18:02 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 871,424 | 04-Mar-2014 | 18:02 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 896,000 | 04-Mar-2014 | 18:02 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 865,280 | 04-Mar-2014 | 18:03 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 855,552 | 04-Mar-2014 | 17:58 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 794,112 | 04-Mar-2014 | 17:58 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 344,064 | 04-Mar-2014 | 17:59 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 360,448 | 04-Mar-2014 | 17:59 | Not Applicable |
| Vmms.exe.mui | 6.3.9600.17039 | 360,448 | 04-Mar-2014 | 17:59 | Not Applicable |
| Rdvgpuinfo.dll | 6.3.9600.17396 | 61,440 | 08-Oct-2014 | 05:58 | x64 |
| Vmms.exe | 6.3.9600.17729 | 13,784,064 | 14-Mar-2015 | 00:18 | x64 |
File hash information
| Package Name | Package Hash SHA1 | Package Hash SHA2 |
|---|---|---|
| Windows8.1-KB3047234-x64.msu | A5F423BBFEFA3E371B7C5F89366D86BC3B58F6C6 | 3A9166396B13491207C199A204D58D27230034A2EA8466A3F891A174AE6A0059 |
| Windows8.1-KB3047234-x64.msu | 25A4C4F35A74FB331416342D757F8D97182345E1 | 77CE6D303DAF1EFB7EB2F5F2A7EE186F875FC2CD1F258D5AAEF75C468E89034B |