#VU103603 Improper Verification of Cryptographic Signature in AMD products - CVE-2024-56161

Vulnerability identifier: #VU103603

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2024-56161

CWE-ID: CWE-347

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
1st Gen AMD EPYC Processors
2nd Gen AMD EPYC Processors
3rd Gen AMD EPYC Processors
4th Gen AMD EPYC Processors
AMD EPYC Embedded 7002
AMD EPYC Embedded 7003
AMD EPYC Embedded 9004

Software vendor:
AMD

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper verification of cryptographic signature in AMD CPU ROM microcode patch loader. A local privileged user can load a malicious CPU microcode and escalate privileges on the system.

Install updates from vendor's website.

• https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3019.html