CVE-2023-20522 Denial of service in 2nd Gen EPYC
An attacker with a malicious BIOS can cause a denial of service on AMD EPYC processors due to insufficient input validation in ASP.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-20522?
CVE-2023-20522 is a high-severity denial of service vulnerability in 2nd Gen EPYC, published on 10 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Insufficient input validation in ASP may allow an attacker with a malicious BIOS to potentially cause a denial of service.
Weakness: CWE-20
Which versions are affected by CVE-2023-20522?
It affects 2 products.
Products include Amd Milanpi Firmware, Amd Romepi Firmware.
How do I fix CVE-2023-20522?
No fix has been published for CVE-2023-20522 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-2023-20522 being exploited?
There is no known exploitation of CVE-2023-20522 in the wild and no public exploit code.
Other vulnerabilities in 2nd Gen EPYC
Sources
Also known as GHSA-4434-6fgr-q9c4.