CVE-2023-20587 Missing authorization in 1st Gen AMD EPYC™ Processors
An attacker can bypass System Management Mode access controls to access SPI flash, potentially leading to arbitrary code execution on AMD EPYC processors.
- 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-2023-20587?
CVE-2023-20587 is a high-severity missing authorization vulnerability in 1st Gen AMD EPYC™ Processors, published on 13 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper Access Control in System Management Mode (SMM) may allow an attacker access to the SPI flash potentially leading to arbitrary code execution.
Weakness: CWE-284
Which versions are affected by CVE-2023-20587?
How do I fix CVE-2023-20587?
No fix has been published for CVE-2023-20587 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2023-20587 being exploited?
There is no known exploitation of CVE-2023-20587 in the wild and no public exploit code.
Sources
Also known as GHSA-3jmf-c2v9-xc39.