CVE-2023-20584 Security feature bypass in AMD EPYC™ 7003 Processors
A compromised hypervisor can bypass SEV-SNP integrity checks via IOMMU faults, allowing guest memory modification on AMD EPYC processors.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-20584?
CVE-2023-20584 is a medium-severity vulnerability in Amd Epyc 72f3 Firmware, published on 13 Aug 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
IOMMU improperly handles certain special address ranges with invalid device table entries (DTEs), which may allow an attacker with privileges and a compromised Hypervisor to induce DTE faults to bypass RMP checks in SEV-SNP, potentially leading to a loss of guest integrity.
Which versions are affected by CVE-2023-20584?
It affects 65 products.
Products include Amd Epyc 7203 Firmware, Amd Epyc 7203p Firmware, Amd Epyc 72f3 Firmware, Amd Epyc 7303 Firmware, Amd Epyc 7303p Firmware, Amd Epyc 7313 Firmware and 59 more.
How do I fix CVE-2023-20584?
Apply the vendor's patch.
Is CVE-2023-20584 being exploited?
There is no known exploitation of CVE-2023-20584 in the wild and no public exploit code.
Other vulnerabilities in Amd Epyc 72f3 Firmware
- CVE-2024-21980 Memory corruption in 3rd Gen AMD EPYC™ Processors
- CVE-2023-20591 Other in AMD EPYC™ 7003 Series Processors
- CVE-2023-20533 Denial of service in 2nd Gen AMD EPYC™ Processors
- CVE-2023-31355 Memory corruption in 3rd Gen AMD EPYC™ Processors
- CVE-2024-21978 Information disclosure in 3rd Gen AMD EPYC™ Processors
Sources
Also known as DEBIAN-CVE-2023-20584, GHSA-7cfh-j5pv-fw3c, UBUNTU-CVE-2023-20584.