#VU97952 Improper access control in AMD products - CVE-2021-26387
Published: October 2, 2024
Vulnerability identifier: #VU97952
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-26387
CWE-ID: CWE-284
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
1st Gen AMD EPYC Processors
2nd Gen AMD EPYC Processors
3rd Gen AMD EPYC Processors
4th Gen AMD EPYC Processors
Software vendor:
AMD
AMD
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper access restrictions in ASP kernel. A local privileged user with access to AMD signing keys and the BIOS menu or UEFI shell can map DRAM regions in protected areas.
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
The vendor is not planning to release security fixes to address this vulnerability.