CVE-2023-20528 Information disclosure in 2nd Gen EPYC
A physical attacker can exfiltrate SMU memory contents via the I2C bus due to insufficient input validation, compromising confidentiality.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-20528?
CVE-2023-20528 is a low-severity vulnerability in Amd Epyc 7232p Firmware, published on 10 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Insufficient input validation in the SMU may allow a physical attacker to exfiltrate SMU memory contents over the I2C bus potentially leading to a loss of confidentiality.
Weakness: CWE-20
Which versions are affected by CVE-2023-20528?
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-2023-20528?
No fix has been published for CVE-2023-20528 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-20528 being exploited?
There is no known exploitation of CVE-2023-20528 in the wild and no public exploit code.
Other vulnerabilities in Amd Epyc 7232p Firmware
Sources
Also known as GHSA-5m5x-4x7x-6499.