CVE-2020-12946 Denial of service in Athlon™ Series

High 7.1 Published 16 Nov 2021 Updated 17 Sep 2024

Insufficient input validation in AMD TPM firmware allows attackers to cause denial of service and integrity loss.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-12946?

CVE-2020-12946 is a high-severity denial of service vulnerability in Amd Epyc 7232p Firmware, published on 16 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Insufficient input validation in ASP firmware for discrete TPM commands could allow a potential loss of integrity and denial of service.

Weakness: CWE-20

Which versions are affected by CVE-2020-12946?

It affects 44 products.

Products include Amd Epyc 7232p Firmware, Amd Epyc 7252 Firmware, Amd Epyc 7262 Firmware, Amd Epyc 7272 Firmware, Amd Epyc 7282 Firmware, Amd Epyc 72f3 Firmware and 38 more.

How do I fix CVE-2020-12946?

No fix has been published for CVE-2020-12946 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-12946 being exploited?

There is no known exploitation of CVE-2020-12946 in the wild and no public exploit code.

All Amd Epyc 7232p Firmware vulnerabilities

Sources

Also known as GHSA-9736-4h38-7mqc.