#VU29817 Input validation error in Windows Server - CVE-2020-1032

Vulnerability identifier: #VU29817

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2020-1032

CWE-ID: CWE-20

Exploitation vector: Local network

Exploit availability: No

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

Vendor: Microsoft

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in Hyper-V RemoteFX vGPU on a host server. A remote authenticated attacker on the local network can run a specially crafted application to execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2008 R2, 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-2020-1032

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.