Main Vulnerability Database Vulnerabilities #VU97945

Improper Initialization in 3rd Gen AMD EPYC Processors and 4th Gen AMD EPYC Processors - CVE-2023-20591

Published: October 2, 2024

Vulnerability identifier: #VU97945

CSH Severity: Medium

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2023-20591

CWE-ID: CWE-665

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: AMD

Affected software:
3rd Gen AMD EPYC Processors
4th Gen AMD EPYC Processors

Detailed vulnerability description

The vulnerability allows a malicious guest to compromise the affected system.

The vulnerability exists due to improper initialization of IOMMU during the DRTM event. A malicious guest can read or modify hypervisor memory.

Install updates from vendor's website.