#VU6257 Improper input validation in Windows and Windows Server - CVE-2017-0163

Vulnerability identifier: #VU6257

Vulnerability risk: High

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-0163

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Windows
Operating systems & Components / Operating system
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

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

The vulnerability exists due to improper input validation by Windows Hyper-V Network Switch on a host server. A remote authenticated attacker can run a specially crafted application on a guest operating system and execute arbitrary code on the target system with privileges of the current user.

Successful exploitation of this vulnerability may result in compromise vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Windows: 8.1, 10

Windows Server: 2008 R2 - 2008, 2012 R2 - 2012, 2016 10.0.14393.10

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0163

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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.