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

2015-07-14T00:00:00
ID KB3046359
Type mskb
Reporter Microsoft
Modified 2015-07-14T17:25:39

Description

<html><body><p>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.</p><h2>Summary</h2><div class="kb-summary-section section"> 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 <a href="https://technet.microsoft.com/library/security/ms15-068" id="kb-link-2" target="_self">Microsoft Security Bulletin MS15-068</a>. </div><h2>More Information</h2><div class="kb-moreinformation-section section"><span class="text-base">Important </span><ul class="sbody-free_list"><li>All future security and nonsecurity updates for Windows 8.1 and Windows Server 2012 R2 require update <a href="https://support.microsoft.com/en-us/help/2919355" id="kb-link-3" target="_self">2919355</a> to be installed. We recommend that you install update <a href="https://support.microsoft.com/en-us/help/2919355" id="kb-link-4" target="_self">2919355</a> on your Windows 8.1-based or Windows Server 2012 R2-based computer so that you receive future updates. </li><li>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 <a href="https://technet.microsoft.com/en-us/library/hh825699" id="kb-link-5" target="_self">Add language packs to Windows</a>.<br/></li></ul></div><h2>How to obtain and install the update</h2><div class="kb-resolution-section section"><a class="bookmark" id="obtaintheupdate"></a><h3 class="sbody-h3">Method 1: Windows Update</h3><div class="kb-collapsible kb-collapsible-expanded">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 <br/><a href="https://www.microsoft.com/security/pc-security/updates.aspx" id="kb-link-7" target="_self">Get security updates automatically</a>. <br/><br/><br/><br/></div><div class="faq-section" faq-section=""><div class="faq-panel"><div class="faq-panel-heading" faq-panel-heading=""><span class="link-expand-image"><span class="faq-chevron win-icon win-icon-ChevronUpSmall"></span></span><span class="bold btn-link link-expand-text"><span class="bold btn-link">Method 2: Microsoft Download Center</span></span></div><div class="faq-panel-body" faq-panel-body=""><span><div class="kb-collapsible kb-collapsible-collapsed">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.<br/><br/>Click the download link in <a href="https://technet.microsoft.com/library/security/ms15-068" id="kb-link-8" target="_self">Microsoft Security Bulletin MS15-068</a> that corresponds to the version of Windows that you are running. <br/> <br/><br/></div><br/></span></div></div></div></div><h2>More Information</h2><div class="kb-moreinformation-section section"><div class="faq-section" faq-section=""><div class="faq-panel"><div class="faq-panel-heading" faq-panel-heading=""><span class="link-expand-image"><span class="faq-chevron win-icon win-icon-ChevronUpSmall"></span></span><span class="bold btn-link link-expand-text"><span class="bold btn-link">File information<br/></span></span></div><div class="faq-panel-body" faq-panel-body=""><span><div class="kb-collapsible kb-collapsible-collapsed"> <br/>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.<br/><br/> <br/><br/><br/><h3 class="sbody-h3">Windows 8.1 and Windows Server 2012 R2 file information<br/></h3><div class="kb-collapsible kb-collapsible-collapsed"><ul class="sbody-free_list"><li>The files that apply to a specific product, milestone (RTM, SP<strong class="sbody-strong">n</strong>), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:<br/><br/><div class="table-responsive"><table class="sbody-table table"><tr class="sbody-tr"><th class="sbody-th"><span class="text-base">Version</span></th><th class="sbody-th"><span class="text-base">Product</span></th><th class="sbody-th"><span class="text-base">Milestone</span></th><th class="sbody-th"><span class="text-base">Service branch</span></th></tr><tr class="sbody-tr"><td class="sbody-td">6.3.920 <span class="text-base">0.16</span> xxx</td><td class="sbody-td">Windows 8.1 and Windows Server 2012 R2</td><td class="sbody-td">RTM</td><td class="sbody-td">GDR</td></tr></table></div></li><li>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.</li></ul><span class="text-base">Note</span> The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.<br/><br/><br/> <br/><br/><h4 class="sbody-h4">For all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2</h4><div class="table-responsive"><table class="sbody-table table"><tr class="sbody-tr"><th class="sbody-th">File name</th><th class="sbody-th">File version</th><th class="sbody-th">File size</th><th class="sbody-th">Date</th><th class="sbody-th">Time</th><th class="sbody-th">Platform</th></tr><tr class="sbody-tr"><td class="sbody-td">Storvsp.sys</td><td class="sbody-td">6.3.9600.17723</td><td class="sbody-td">67,584</td><td class="sbody-td">09-Mar-2015</td><td class="sbody-td">02:02</td><td class="sbody-td">x64</td></tr><tr class="sbody-tr"><td class="sbody-td">Storvsp.sys</td><td class="sbody-td">6.3.9600.17723</td><td class="sbody-td">67,584</td><td class="sbody-td">09-Mar-2015</td><td class="sbody-td">02:02</td><td class="sbody-td">x64</td></tr></table></div></div><br/></div></span></div></div></div><div class="faq-section" faq-section=""><div class="faq-panel"><div class="faq-panel-heading" faq-panel-heading=""><span class="link-expand-image"><span class="faq-chevron win-icon win-icon-ChevronUpSmall"></span></span><span class="bold btn-link link-expand-text"><span class="bold btn-link">How to obtain help and support for this security update</span></span></div><div class="faq-panel-body" faq-panel-body=""><span><div class="kb-collapsible kb-collapsible-collapsed">Help for installing updates: <a href="https://support.microsoft.com/ph/6527" id="kb-link-9" target="_self">Support for Microsoft Update</a><br/><br/>Security solutions for IT professionals: <a href="https://technet.microsoft.com/security/bb980617.aspx" id="kb-link-10" target="_self">TechNet Security Troubleshooting and Support</a><br/><br/>Help for protecting your Windows-based computer from viruses and malware: <a href="https://support.microsoft.com/contactus/cu_sc_virsec_master" id="kb-link-11" target="_self">Virus Solution and Security Center</a><br/><br/>Local support according to your country: <a href="https://support.microsoft.com/common/international.aspx" id="kb-link-12" target="_self">International Support</a></div><br/></span></div></div></div></div></body></html>