Buffer overflow in Amd 1st Gen Epyc™
CVE-2023-20520
Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potentially leading to arbitrary code execution.
Vulnerability class: Buffer Overflow
EPSS: 0.008 (52.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Amd 1st Gen Epyc™ — versions various
- Amd 2nd Gen Epyc™ — versions various
- Amd 3rd Gen Epyc™ — versions various
- Amd Epyc_7232p
- Amd Epyc_7232p_firmware — versions romepi_1.0.0.d
- Amd Epyc_7251
- Amd Epyc_7251_firmware — versions naplespi_1.0.0.h
- Amd Epyc_7252
- Amd Epyc_7252_firmware — versions romepi_1.0.0.d
- Amd Epyc_7261
Weakness classification (CWE)
References
- psirt@amd.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-20520?
- CVE-2023-20520 is a critical-severity vulnerability in Amd 1st Gen Epyc™, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-05-09.
- How severe is CVE-2023-20520?
- Critical severity. CVSS v3 base score is 9.8 out of 10.