Memory corruption in Win32k.sys driver in Windows Server and Windows - CVE-2016-3250

Detailed vulnerability description

The vulnerability allows a local user to obtain elevated privileges.

The vulnerability exists doe to an error in Win32k.sys kernel-mode driver when handling certain objects in memory. A local user can elevate privileges on vulnerable system.

Successful exploitation of this vulnerability will allow a local attacker to executed arbitrary code with SYSTEM privileges.

How to mitigate CVE-2016-3250

To resolve this vulnerability vendor recommends installing the following updates:

Windows Server 2012

Windows Server 2012

Windows RT 8.1

Use Windows Update to obtain patch.

Windows 10

Windows 10 for 32-bit Systems
Windows 10 for x64-based Systems
Windows 10 Version 1511 for 32-bit Systems
Windows 10 Version 1511 for x64-based Systems

Server Core installation option

Windows Server 2012

Sources

• https://technet.microsoft.com/en-us/library/security/MS16-090