CVE-2023-20532 Denial of service in 2nd Gen EPYC
An attacker can cause a denial of service by improperly locking resources due to insufficient input validation in the SMU firmware.
- 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-2023-20532?
CVE-2023-20532 is a medium-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 input validation in the SMU may allow an attacker to improperly lock resources, potentially resulting in a denial of service.
Weakness: CWE-20
Which versions are affected by CVE-2023-20532?
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-2023-20532?
No fix has been published for CVE-2023-20532 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-2023-20532 being exploited?
There is no known exploitation of CVE-2023-20532 in the wild and no public exploit code.
Other vulnerabilities in Amd Epyc 7232p Firmware
Sources
Also known as GHSA-6ghc-mcpm-3hv7.