Improper key usage in AMD EPYC Processors

1) Key management errors

EUVDB-ID: #VU97947

Risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2024-21981

CWE-ID: CWE-320 - Key Management Errors

Exploit availability: No

Description

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

The vulnerability exists due to improper key usage control in AMD Secure Processor (ASP). A local user with arbitrary code execution privilege in ASP can extract ASP cryptographic keys.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

According to vendor's statement this vulnerability will not be fixed.

Vulnerable software versions

1st Gen AMD EPYC Processors: All versions

2nd Gen AMD EPYC Processors: All versions

3rd Gen AMD EPYC Processors: All versions

CPE2.3

• cpe:2.3:h:amd:1st_gen_amd_epyc_processors:*:*:*:*:*:*:*:*...
• cpe:2.3:h:amd:2nd_gen_amd_epyc_processors:*:*:*:*:*:*:*:*...
• cpe:2.3:h:amd:3rd_gen_amd_epyc_processors:*:*:*:*:*:*:*:*...

External links

http://www.amd.com/en/resources/product-security/bulletin/amd-sb-3003.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.