Win32k Elevation of Privilege Vulnerability

1) Memory corruption in Win32k.sys driver

EUVDB-ID: #VU126

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-3252

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

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.

Mitigation

Install updates from Microsoft website.

Vulnerable software versions

Windows: 7 - Vista

Windows Server: 2008 - 2012 R2

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2016-3252

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.