Severity Rating: Important
Revision Note: V2.0 (December 13, 2016): Bulletin publish 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.
Summary: This security update resolves vulnerabilities in Microsoft Windows. The vulnerability could allow elevation of privilege when the Windows Common Log File System (CLFS) driver improperly handles objects in memory. In a local attack scenario, an attacker could exploit these vulnerabilities by running a specially crafted application to take complete control over the affected system. An attacker who successfully exploits this vulnerability could run processes in an elevated context.