high
7.5
CWE
119
Advisory Published
Updated

CVE-2023-20531: Buffer Overflow

First published: Tue Jan 10 2023(Updated: )

Insufficient bound checks in the SMU may allow an attacker to update the SRAM from/to address space to an invalid value potentially resulting in a denial of service.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
AMD EPYC 7H12 Firmware<romepi_1.0.0.c
AMD EPYC 7H12 Firmware
AMD EPYC 7F72<romepi_1.0.0.c
AMD EPYC 7F72 Firmware
AMD EPYC 7F52 Firmware<romepi_1.0.0.c
AMD EPYC 7F52 Firmware
AMD EPYC 7F32 Firmware<romepi_1.0.0.c
AMD EPYC 7F32 Firmware
AMD EPYC 7742 Firmware<romepi_1.0.0.c
AMD EPYC Server
AMD EPYC 7702 Firmware<romepi_1.0.0.c
AMD EPYC 7702P
AMD EPYC 7702p firmware<romepi_1.0.0.c
AMD EPYC Server
AMD EPYC 7662 Firmware<romepi_1.0.0.c
AMD EPYC 7662 Firmware
AMD EPYC 7642 Firmware<romepi_1.0.0.c
AMD EPYC 7642 Firmware
AMD EPYC 7552 Firmware<romepi_1.0.0.c
AMD EPYC 7552 Firmware
AMD EPYC 7542 Firmware<romepi_1.0.0.c
AMD EPYC Server
AMD EPYC 7532 Firmware<romepi_1.0.0.c
AMD EPYC 7532 Firmware
AMD EPYC 7502P Firmware<romepi_1.0.0.c
AMD EPYC 7502P Firmware
AMD EPYC 7502 Firmware<romepi_1.0.0.c
AMD EPYC 7502 firmware
AMD EPYC 7452 Firmware<romepi_1.0.0.c
AMD EPYC Server
Amd Epyc Server Firmware<romepi_1.0.0.c
AMD EPYC 7402 Firmware
AMD EPYC 7402P Firmware<romepi_1.0.0.c
AMD EPYC 7402P Firmware
AMD EPYC Firmware<romepi_1.0.0.c
AMD EPYC 7352 firmware
AMD EPYC 7302P Firmware<romepi_1.0.0.c
AMD EPYC 7302P Firmware
Amd Epyc Server Firmware<romepi_1.0.0.c
AMD EPYC 7302 Firmware
AMD EPYC 7282 Firmware<romepi_1.0.0.c
AMD EPYC 7282 Firmware
AMD EPYC 7272 firmware<romepi_1.0.0.c
AMD EPYC 7272 firmware
AMD EPYC 7262 Firmware<romepi_1.0.0.c
AMD EPYC 7262 Firmware
AMD EPYC 7252 Firmware<romepi_1.0.0.c
AMD EPYC 7252 Firmware
AMD EPYC 7232p firmware<romepi_1.0.0.c
AMD EPYC 7232p firmware
AMD EPYC 7002 Firmware<romepi_1.0.0.c
AMD EPYC Server
AMD EPYC 7003 Firmware<milanpi_1.0.0.5
AMD EPYC 7003 Firmware
AMD EPYC 72F3 Firmware<milanpi_1.0.0.5
AMD EPYC 72F3 Firmware
AMD EPYC Firmware<milanpi_1.0.0.5
AMD EPYC 7313 Firmware
AMD EPYC 7313P Firmware<milanpi_1.0.0.5
AMD EPYC 7313P Firmware
Amd Epyc Server Firmware<milanpi_1.0.0.5
AMD EPYC 7343 Firmware
AMD EPYC 7373X Firmware<milanpi_1.0.0.5
AMD EPYC 7373X Firmware
AMD EPYC 73F3 Firmware<milanpi_1.0.0.5
AMD EPYC 73F3 Firmware
AMD EPYC 7413 Firmware<milanpi_1.0.0.5
AMD EPYC 7413 Firmware
AMD EPYC 7443P Firmware<milanpi_1.0.0.5
AMD EPYC 7443P
AMD EPYC 7443P Firmware<milanpi_1.0.0.5
AMD EPYC 7443P Firmware
Amd Epyc Server Firmware<milanpi_1.0.0.5
AMD EPYC Server
AMD EPYC 74F3 Firmware<milanpi_1.0.0.5
AMD EPYC 74F3 Firmware
AMD EPYC 7513 Firmware<milanpi_1.0.0.5
AMD EPYC 7513 Firmware
Amd Epyc Server Firmware<milanpi_1.0.0.5
AMD EPYC 7543 Firmware
AMD EPYC 7543P Firmware<milanpi_1.0.0.5
AMD EPYC 7543P Firmware
AMD EPYC 7573X Firmware<milanpi_1.0.0.5
AMD EPYC 7573X Firmware
AMD EPYC 75F3 Firmware<milanpi_1.0.0.5
AMD EPYC 75F3 Firmware
AMD EPYC 7643P Firmware<milanpi_1.0.0.5
AMD EPYC 7643 Firmware
AMD EPYC 7663 Firmware<milanpi_1.0.0.5
AMD EPYC 7663 Firmware
AMD EPYC 7713P Firmware<milanpi_1.0.0.5
AMD EPYC 7713 Firmware
AMD EPYC 7713P Firmware<milanpi_1.0.0.5
AMD EPYC 7713P Firmware
AMD EPYC 7743 Firmware<milanpi_1.0.0.5
AMD EPYC 7743 Firmware
AMD EPYC 7763 Firmware<milanpi_1.0.0.5
AMD EPYC 7763 Firmware
AMD EPYC 7773X Firmware<milanpi_1.0.0.5
AMD EPYC 7773X Firmware
All of
AMD EPYC 7H12 Firmware<romepi_1.0.0.c
AMD EPYC 7H12 Firmware
All of
AMD EPYC 7F72<romepi_1.0.0.c
AMD EPYC 7F72 Firmware
All of
AMD EPYC 7F52 Firmware<romepi_1.0.0.c
AMD EPYC 7F52 Firmware
All of
AMD EPYC 7F32 Firmware<romepi_1.0.0.c
AMD EPYC 7F32 Firmware
All of
AMD EPYC 7742 Firmware<romepi_1.0.0.c
AMD EPYC Server
All of
AMD EPYC 7702 Firmware<romepi_1.0.0.c
AMD EPYC 7702P
All of
AMD EPYC 7702p firmware<romepi_1.0.0.c
AMD EPYC Server
All of
AMD EPYC 7662 Firmware<romepi_1.0.0.c
AMD EPYC 7662 Firmware
All of
AMD EPYC 7642 Firmware<romepi_1.0.0.c
AMD EPYC 7642 Firmware
All of
AMD EPYC 7552 Firmware<romepi_1.0.0.c
AMD EPYC 7552 Firmware
All of
AMD EPYC 7542 Firmware<romepi_1.0.0.c
AMD EPYC Server
All of
AMD EPYC 7532 Firmware<romepi_1.0.0.c
AMD EPYC 7532 Firmware
All of
AMD EPYC 7502P Firmware<romepi_1.0.0.c
AMD EPYC 7502P Firmware
All of
AMD EPYC 7502 Firmware<romepi_1.0.0.c
AMD EPYC 7502 firmware
All of
AMD EPYC 7452 Firmware<romepi_1.0.0.c
AMD EPYC Server
All of
Amd Epyc Server Firmware<romepi_1.0.0.c
AMD EPYC 7402 Firmware
All of
AMD EPYC 7402P Firmware<romepi_1.0.0.c
AMD EPYC 7402P Firmware
All of
AMD EPYC Firmware<romepi_1.0.0.c
AMD EPYC 7352 firmware
All of
AMD EPYC 7302P Firmware<romepi_1.0.0.c
AMD EPYC 7302P Firmware
All of
Amd Epyc Server Firmware<romepi_1.0.0.c
AMD EPYC 7302 Firmware
All of
AMD EPYC 7282 Firmware<romepi_1.0.0.c
AMD EPYC 7282 Firmware
All of
AMD EPYC 7272 firmware<romepi_1.0.0.c
AMD EPYC 7272 firmware
All of
AMD EPYC 7262 Firmware<romepi_1.0.0.c
AMD EPYC 7262 Firmware
All of
AMD EPYC 7252 Firmware<romepi_1.0.0.c
AMD EPYC 7252 Firmware
All of
AMD EPYC 7232p firmware<romepi_1.0.0.c
AMD EPYC 7232p firmware
All of
AMD EPYC 7002 Firmware<romepi_1.0.0.c
AMD EPYC Server
All of
AMD EPYC 7003 Firmware<milanpi_1.0.0.5
AMD EPYC 7003 Firmware
All of
AMD EPYC 72F3 Firmware<milanpi_1.0.0.5
AMD EPYC 72F3 Firmware
All of
AMD EPYC Firmware<milanpi_1.0.0.5
AMD EPYC 7313 Firmware
All of
AMD EPYC 7313P Firmware<milanpi_1.0.0.5
AMD EPYC 7313P Firmware
All of
Amd Epyc Server Firmware<milanpi_1.0.0.5
AMD EPYC 7343 Firmware
All of
AMD EPYC 7373X Firmware<milanpi_1.0.0.5
AMD EPYC 7373X Firmware
All of
AMD EPYC 73F3 Firmware<milanpi_1.0.0.5
AMD EPYC 73F3 Firmware
All of
AMD EPYC 7413 Firmware<milanpi_1.0.0.5
AMD EPYC 7413 Firmware
All of
AMD EPYC 7443P Firmware<milanpi_1.0.0.5
AMD EPYC 7443P
All of
AMD EPYC 7443P Firmware<milanpi_1.0.0.5
AMD EPYC 7443P Firmware
All of
Amd Epyc Server Firmware<milanpi_1.0.0.5
AMD EPYC Server
All of
AMD EPYC 74F3 Firmware<milanpi_1.0.0.5
AMD EPYC 74F3 Firmware
All of
AMD EPYC 7513 Firmware<milanpi_1.0.0.5
AMD EPYC 7513 Firmware
All of
Amd Epyc Server Firmware<milanpi_1.0.0.5
AMD EPYC 7543 Firmware
All of
AMD EPYC 7543P Firmware<milanpi_1.0.0.5
AMD EPYC 7543P Firmware
All of
AMD EPYC 7573X Firmware<milanpi_1.0.0.5
AMD EPYC 7573X Firmware
All of
AMD EPYC 75F3 Firmware<milanpi_1.0.0.5
AMD EPYC 75F3 Firmware
All of
AMD EPYC 7643P Firmware<milanpi_1.0.0.5
AMD EPYC 7643 Firmware
All of
AMD EPYC 7663 Firmware<milanpi_1.0.0.5
AMD EPYC 7663 Firmware
All of
AMD EPYC 7713P Firmware<milanpi_1.0.0.5
AMD EPYC 7713 Firmware
All of
AMD EPYC 7713P Firmware<milanpi_1.0.0.5
AMD EPYC 7713P Firmware
All of
AMD EPYC 7743 Firmware<milanpi_1.0.0.5
AMD EPYC 7743 Firmware
All of
AMD EPYC 7763 Firmware<milanpi_1.0.0.5
AMD EPYC 7763 Firmware
All of
AMD EPYC 7773X Firmware<milanpi_1.0.0.5
AMD EPYC 7773X Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-20531?

    CVE-2023-20531 is considered to have a high severity due to the potential for denial of service caused by insufficient bound checks in the SMU.

  • How do I fix CVE-2023-20531?

    To fix CVE-2023-20531, update the firmware to at least version romepi_1.0.0.c for affected AMD Epyc systems.

  • What systems are vulnerable to CVE-2023-20531?

    CVE-2023-20531 affects specific AMD Epyc firmware versions including romepi_1.0.0.c for various Epyc models.

  • What could an attacker exploit in CVE-2023-20531?

    An attacker could exploit CVE-2023-20531 to manipulate SRAM address space, potentially leading to system instability.

  • Has AMD released any advisories for CVE-2023-20531?

    Yes, AMD has issued a security bulletin regarding CVE-2023-20531, detailing the vulnerability and recommended actions.

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