Vulnerability in Amd 1st Gen Epyc™ Processors
CVE-2023-20521
TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory content verification, potentially leading to loss of confidentiality or a denial of service.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
EPSS: 0.003 (17.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L.
Affected products
- Amd 1st Gen Epyc™ Processors — versions various
- Amd 2nd Gen Epyc™ Processors — versions various
- Amd 3rd Gen Epyc™ Processors — versions various
- Amd Amd_3015ce
- Amd Amd_3015ce_firmware
- Amd Amd_3015e
- Amd Amd_3015e_firmware
- Amd Epyc™ Embedded 3000 — versions various
- Amd Epyc™ Embedded 7002 — versions various
- Amd Epyc™ Embedded 7003 — versions various
Weakness classification (CWE)
References
- psirt@amd.com (vendor-advisory, Vendor Advisory)
- psirt@amd.com (vendor-advisory, Vendor Advisory)
- psirt@amd.com (vendor-advisory)
Frequently asked questions
- What is CVE-2023-20521?
- CVE-2023-20521 is a low-severity vulnerability in Amd 1st Gen Epyc™ Processors, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 3.3/10. Published 2023-11-14.
- How severe is CVE-2023-20521?
- Low severity. CVSS v3 base score is 3.3 out of 10.