CVE-2023-20531 Denial of service in 2nd Gen EPYC
Insufficient bound checks in AMD EPYC SMU allow attackers to cause a denial of service by updating SRAM addresses to invalid values.
- 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-2023-20531?
CVE-2023-20531 is a high-severity denial of service vulnerability in Amd Epyc 7232p Firmware, 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 bound checks in the SMU may allow an attacker to update the SRAM from/to address space to an invalid value potentially resulting in a denial of service.
Weakness: CWE-119
Which versions are affected by CVE-2023-20531?
It affects 50 products.
Products include Amd Epyc 7002 Firmware, Amd Epyc 7003 Firmware, Amd Epyc 7232p Firmware, Amd Epyc 7252 Firmware, Amd Epyc 7262 Firmware, Amd Epyc 7272 Firmware and 44 more.
How do I fix CVE-2023-20531?
No fix has been published for CVE-2023-20531 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-2023-20531 being exploited?
There is no known exploitation of CVE-2023-20531 in the wild and no public exploit code.
Other vulnerabilities in Amd Epyc 7232p Firmware
Sources
Also known as GHSA-wpxh-9443-792j.