CVE-2021-26371 Information disclosure in 1st Gen AMD EPYC™ Processors
A malicious application can exploit a bootloader flaw to expose ASP memory to userspace, leading to information disclosure on affected AMD 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-2021-26371?
CVE-2021-26371 is a medium-severity vulnerability in Amd Epyc 7232p Firmware, published on 9 May 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A compromised or malicious ABL or UApp could send a SHA256 system call to the bootloader, which may result in exposure of ASP memory to userspace, potentially leading to information disclosure.
Which versions are affected by CVE-2021-26371?
It affects 128 products.
Products include Amd Amd 3015ce Firmware, Amd Amd 3015e Firmware, Amd Epyc 7001 Firmware, Amd Epyc 7002 Firmware, Amd Epyc 7003 Firmware, Amd Epyc 7232p Firmware and 122 more.
How do I fix CVE-2021-26371?
No fix has been published for CVE-2021-26371 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-26371 being exploited?
There is no known exploitation of CVE-2021-26371 in the wild and no public exploit code.
Other vulnerabilities in Amd Epyc 7232p Firmware
- CVE-2021-26365 Information disclosure in Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock”
- CVE-2020-12930 Privilege escalation in AMD Radeon RX 5000 Series & PRO W5000 Series
- CVE-2020-12931 Privilege escalation in AMD Radeon RX 5000 Series & PRO W5000 Series
- CVE-2021-26392 Memory corruption in AMD Radeon RX 5000 Series & PRO W5000 Series
- CVE-2021-26354 Memory corruption in 2nd Gen AMD EPYC™ Processors
Sources
Also known as GHSA-283q-cf8c-x432.