Microsoft Security Bulletin MS16-139 - Important

Security Update for Windows Kernel (3199720)

Published: November 8, 2016 | Updated: December 13, 2016

Version: 2.0

Executive Summary

This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker runs a specially crafted application to access sensitive information. A locally authenticated attacker could attempt to exploit this vulnerability by running a specially crafted application. An attacker can gain access to information not intended to be available to the user by using this method.

This security update is rated Important for Microsoft Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2 (and Server Core). For more information, see the Affected Software and Vulnerability Severity Ratings section.

The security update addresses the vulnerability by helping to ensure the kernel API correctly enforces access controls applied to this information.

For more information about the vulnerability, see the Vulnerability Information section. For more information about this update, see Microsoft Knowledge Base Article 3199720.

Affected Software and Vulnerability Severity Ratings

The following software versions or editions are affected. Versions or editions that are not listed are either past their support life cycle or are not affected. To determine the support life cycle for your software past version or edition, see Microsoft Support Lifecycle.

The severity ratings indicated for each affected software assume the potential maximum impact of the vulnerability. For information regarding the likelihood, within 30 days of this security bulletin’s release, of the exploitability of the vulnerability in relation to its severity rating and security impact, please see the Exploitability Index in the November bulletin summary.

^[1]Beginning with the October 2016 release, Microsoft is changing the update servicing model for Windows 7, Windows Server 2008 R2, Windows 8.1, Windows Server 2012, and Windows Server 2012 R2. For more information, please see this Microsoft TechNet article.

*The Updates Replaced column shows only the latest update in any chain of superseded updates. For a comprehensive list of updates replaced, go to the Microsoft Update Catalog, search for the update KB number, and then view update details (updates replaced information is provided on the PackageDetails tab).

Vulnerability Information

Windows Kernel Elevation of Privilege Vulnerability - CVE-2016-7216

An elevation of privilege vulnerability exists in the way that the Windows Kernel API enforces permissions. An attacker who successfully exploited the vulnerability could gain access to information that is not intended for the user.

To exploit the vulnerability a locally-authenticated attacker could run a specially crafted application.

The security update addresses the vulnerability by helping to ensure that the Windows Kernel API properly enforces permissions.

The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list:

Mitigating Factors

Microsoft has not identified any mitigating factors for this vulnerability.

Workarounds

Microsoft has not identified any workarounds for this vulnerability.

Security Update Deployment

For Security Update Deployment information, see the Microsoft Knowledge Base article referenced in the Executive Summary.

Acknowledgments

Microsoft recognizes the efforts of those in the security community who help us protect customers through coordinated vulnerability disclosure. See Acknowledgments for more information.

Disclaimer

The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

Revisions

• V1.0 (November 8, 2016): Bulletin published.
• V2.0 (December 13, 2016): Revised bulletin to announce the following updates have been rereleased with a detection change that addresses a supersedence issue that certain customers experienced when attempting to install the November Security Only updates.
  • Security Only update 3197867 for all supported releases of Windows 7 and Windows Server 2008 R2. For more information, see Microsoft Knowledge Base Article 3197867.
  • Monthly Rollup 3197868 for all supported releases of Windows 7 and Windows Server 2008 R2. For more information, see Microsoft Knowledge Base Article 3197868.
  • Security Only update 3197876 for Windows Server 2012. For more information, see Microsoft Knowledge Base Article 3197876.
  • Monthly Rollup 3197877 for Windows Server 2012. For more information, see Microsoft Knowledge Base Article 3197877.
  • Security Only update 3197873 for Windows 8.1 and Windows Server 2012 R2. For more information, see Microsoft Knowledge Base Article 3197873.
  • Monthly Rollup 3197874 for Windows 8.1 and Windows Server 2012 R2. For more information, see Microsoft Knowledge Base Article 3197874.
• These are detection changes only. There were no changes to the update files. Customers who have already successfully installed any of these updates do not need to take any action. For more information, see the Microsoft Knowledge Base article for the respective update.

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