CVE-2023-20578 Race condition in AMD EPYC™ 7001 Processors
A TOCTOU race condition in AMD SMM allows attackers with ring0 privileges to modify buffers, potentially leading to arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-20578?
CVE-2023-20578 is a high-severity vulnerability in Amd Epyc 7232p Firmware, published on 13 Aug 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A TOCTOU (Time-Of-Check-Time-Of-Use) in SMM may allow an attacker with ring0 privileges and access to the BIOS menu or UEFI shell to modify the communications buffer potentially resulting in arbitrary code execution.
Weakness: CWE-367
Which versions are affected by CVE-2023-20578?
It affects 105 products.
Products include Amd Epyc 7001 Firmware, Amd Epyc 7203 Firmware, Amd Epyc 7203p Firmware, Amd Epyc 7232p Firmware, Amd Epyc 7251 Firmware, Amd Epyc 7252 Firmware and 99 more.
How do I fix CVE-2023-20578?
No fix has been published for CVE-2023-20578 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-20578 being exploited?
There is no known exploitation of CVE-2023-20578 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-2020-12988 Denial of service in 1st/2nd/3rd Gen AMD EPYC™ Processors
Sources
Also known as GHSA-3phx-v48r-rmwc.