SB2024100223 - Improper access control in AMD EPYC Processors
Published: October 2, 2024
Security Bulletin ID
SB2024100223
CSH Severity
Low
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper access control (CVE-ID: CVE-2021-26387)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 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
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 not aware of any official remediation provided by the vendor.