Win32k Elevation of Privilege Vulnerability

1) Privilege escalation

EUVDB-ID: #VU962

Risk: Medium

CVSSv3.1: 8.1 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2016-3270

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists due to boundary error in the Microsoft Windows kernel-mode driver (Win32k). By running a malicious program on the affected system attackers can execute arbitrary code with SYSTEM privileges.

Successful exploitation of the vulnerability may result in a complete system compromise.

Mitigation

Install updates from Microsoft website.

Vulnerable software versions

Windows: 7 - Vista

Windows Server: 2008 - 2008 R2

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2016-3270

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.