CVE-2020-12966 Information disclosure in 1st/2nd/3rd Gen AMD EPYC™ Processors
A malicious hypervisor can leak guest data from AMD EPYC processors using SEV-ES or SEV-SNP, requiring a local authenticated attacker.
- 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-2020-12966?
CVE-2020-12966 is a medium-severity vulnerability in Amd Epyc 7232p Firmware, published on 4 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
AMD EPYC™ Processors contain an information disclosure vulnerability in the Secure Encrypted Virtualization with Encrypted State (SEV-ES) and Secure Encrypted Virtualization with Secure Nested Paging (SEV-SNP). A local authenticated attacker could potentially exploit this vulnerability leading to leaking guest data by the malicious hypervisor.
Weakness: CWE-200
Which versions are affected by CVE-2020-12966?
It affects 107 products.
Products include Amd Epyc 7001 Firmware, Amd Epyc 7002 Firmware, Amd Epyc 7003 Firmware, Amd Epyc 7232p Firmware, Amd Epyc 7251 Firmware, Amd Epyc 7252 Firmware and 101 more.
How do I fix CVE-2020-12966?
No fix has been published for CVE-2020-12966 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-12966 being exploited?
There is no known exploitation of CVE-2020-12966 in the wild and no public exploit code.
Other vulnerabilities in Amd Epyc 7232p Firmware
- CVE-2021-26340 A malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to flush the Translation
- CVE-2021-26398 Memory corruption in 1st Gen EPYC
- CVE-2021-26331 Code injection in 1st Gen AMD EPYC™
- CVE-2021-26335 Code injection in Athlon™ Series
- CVE-2023-20578 Race condition in AMD EPYC™ 7001 Processors
Sources
Also known as GHSA-f4c7-7548-33vx.