#VU4867 Improper input validation in Windows Server and Windows - CVE-2014-4148

Vulnerability identifier: #VU4867

Vulnerability risk: Critical

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red

CVE-ID: CVE-2014-4148

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

Vulnerable software:
Windows Server
Windows

Software vendor:
Microsoft

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to improper input validation when processing TrueType fonts in kernel-mode driver (win32k.sys). A remote attacker can create a specially crafted font file, place it on a web page, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Install update from vendor's website.

• https://technet.microsoft.com/en-us/library/security/ms14-058