MS15-105: Vulnerability in Hyper-V could allow security feature bypass: September 8, 2015

2017-01-07T22:29:12
ID KB3091287
Type mskb
Reporter Microsoft
Modified 2015-09-08T17:19:01

Description

<html><body><p>Resolves a vulnerability in Windows that could allow security feature bypass if an attacker runs a specially crafted application that could cause Windows Hyper-V to apply access control list (ACL) configuration settings incorrectly.</p><h2>Summary</h2><div class="kb-summary-section section">This security update resolves a vulnerability in Windows that could allow security feature bypass if an attacker runs a specially crafted application that could cause Windows Hyper-V to apply access control list (ACL) configuration settings incorrectly. Customers who have not enabled the Hyper-V role are not affected.<br/><br/> To learn more about the vulnerability, see <a href="https://technet.microsoft.com/library/security/ms15-105" id="kb-link-2" target="_self">Microsoft Security Bulletin MS15-105</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>More information about this security update</h2><div class="kb-moreinformation-section section">The following articles contain more information about this security update as it relates to individual product versions. The articles may contain known issue information. <ul class="sbody-free_list"><li><a href="https://support.microsoft.com/help/3087088" id="kb-link-6" target="_self">3087088</a> MS15-105: Description of the security update for Hyper-V: September 8, 2015<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-8" target="_self">Get security updates automatically</a>. <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/ms15-105" id="kb-link-9" target="_self">Microsoft Security Bulletin MS15-105</a> that corresponds to the version of Windows that you are running. <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">Security update deployment information</span></span></div><div class="faq-panel-body" faq-panel-body=""><span><div class="kb-collapsible kb-collapsible-collapsed"><h4 class="sbody-h4">Windows 8.1 (Pro and Enterprise editions)<br/></h4><span class="text-base">Reference Table</span><br/><br/>The following table contains the security update information for this software.<br/><div class="table-responsive"><table class="sbody-table table"><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Security update file name</span></td><td class="sbody-td">For all supported x64-based editions of Windows 8.1:<br/><span class="text-base">Windows8.1-KB3087088-x64.msu</span></td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Installation switches</span></td><td class="sbody-td">See <a href="https://support.microsoft.com/help/934307" id="kb-link-10" target="_self">Microsoft Knowledge Base Article 934307</a></td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Restart requirement</span></td><td class="sbody-td">A system restart is required after you apply this security update.</td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Removal information</span></td><td class="sbody-td">To uninstall an update installed by WUSA, use the <span class="text-base">/Uninstall</span> setup switch or click <span class="text-base">Control Panel</span>, click <span class="text-base">System and Security</span>, click <span class="text-base">Windows Update</span>, and then under See also, click <span class="text-base">Installed updates</span> and select from the list of updates.</td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">File information</span></td><td class="sbody-td">See <a href="https://support.microsoft.com/help/3087088" id="kb-link-11" target="_self">Microsoft Knowledge Base Article 3087088</a></td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Registry key verification</span></td><td class="sbody-td"><span class="text-base">Note</span> A registry key does not exist to validate the presence of this update.</td></tr></table></div><h4 class="sbody-h4">Windows Server 2012 R2 (all editions)<br/></h4><span class="text-base">Reference Table</span><br/><br/>The following table contains the security update information for this software.<br/><div class="table-responsive"><table class="sbody-table table"><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Security update file name</span></td><td class="sbody-td">For all supported editions of Windows Server 2012 R2:<br/><span class="text-base">Windows8.1-KB3087088-x64.msu</span></td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Installation switches</span></td><td class="sbody-td">See <a href="https://support.microsoft.com/help/934307" id="kb-link-12" target="_self">Microsoft Knowledge Base Article 934307</a></td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Restart requirement</span></td><td class="sbody-td">A system restart is required after you apply this security update.</td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Removal information</span></td><td class="sbody-td">To uninstall an update installed by WUSA, use the <span class="text-base">/Uninstall</span> setup switch or click <span class="text-base">Control Panel</span>, click <span class="text-base">System and Security</span>, click <span class="text-base">Windows Update</span>, and then under See also, click <span class="text-base">Installed updates</span> and select from the list of updates.</td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">File information</span></td><td class="sbody-td">See <a href="https://support.microsoft.com/help/3087088" id="kb-link-13" target="_self">Microsoft Knowledge Base Article 3087088</a></td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Registry key verification</span></td><td class="sbody-td"><span class="text-base">Note</span> A registry key does not exist to validate the presence of this update.</td></tr></table></div><h4 class="sbody-h4">Windows 10 (all editions)<br/></h4><span class="text-base">Reference Table</span><br/><br/>The following table contains the security update information for this software.<br/><div class="table-responsive"><table class="sbody-table table"><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Security update file name</span></td><td class="sbody-td">For all supported x64-based editions of Windows 10:<br/><span class="text-base">Windows10.0-KB3081455-x64.msu</span></td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Installation switches</span></td><td class="sbody-td">See <a href="https://support.microsoft.com/help/934307" id="kb-link-14" target="_self">Microsoft Knowledge Base Article 934307</a></td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Restart requirement</span></td><td class="sbody-td">A system restart is required after you apply this security update.</td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Removal information</span></td><td class="sbody-td">To uninstall an update installed by WUSA, use the <span class="text-base">/Uninstall</span> setup switch or click <span class="text-base">Control Panel</span>, click <span class="text-base">System and Security</span>, click <span class="text-base">Windows Update</span>, and then under See also, click <span class="text-base">Installed updates</span> and select from the list of updates.</td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">File information</span></td><td class="sbody-td">See <a href="https://support.microsoft.com/help/3081455" id="kb-link-15" target="_self">Microsoft Knowledge Base Article 3081455</a></td></tr><tr class="sbody-tr"><td class="sbody-td"><span class="text-base">Registry key verification</span></td><td class="sbody-td"><span class="text-base">Note</span> A registry key does not exist to validate the presence of this update.</td></tr></table></div></div><br/></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">File hash information</span></span></div><div class="faq-panel-body" faq-panel-body=""><span><div class="kb-collapsible kb-collapsible-collapsed"><div class="table-responsive"><table class="sbody-table table"><tr class="sbody-tr"><th class="sbody-th">File name</th><th class="sbody-th">SHA1 hash</th><th class="sbody-th">SHA256 hash</th></tr><tr class="sbody-tr"><td class="sbody-td">Windows8.1-KB3087088-x64.msu</td><td class="sbody-td">68477794F86C2B770DF459674934FFC79F7D91F4</td><td class="sbody-td">3FD0619F7A570454BCB3EB17C8B5428C1C821545DBB435B491F0E88D1BBD9820</td></tr><tr class="sbody-tr"><td class="sbody-td">Windows8.1-KB3087088-x64.msu</td><td class="sbody-td">68477794F86C2B770DF459674934FFC79F7D91F4</td><td class="sbody-td">3FD0619F7A570454BCB3EB17C8B5428C1C821545DBB435B491F0E88D1BBD9820</td></tr><tr class="sbody-tr"><td class="sbody-td">Windows8.1-KB3087088-x64.msu</td><td class="sbody-td">68477794F86C2B770DF459674934FFC79F7D91F4</td><td class="sbody-td">3FD0619F7A570454BCB3EB17C8B5428C1C821545DBB435B491F0E88D1BBD9820</td></tr></table></div></div><br/></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-16" 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-17" 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-18" 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-19" target="_self">International Support</a></div><br/></span></div></div></div></div></body></html>