critical
9.8
CWE
787 119
Advisory Published
Updated

CVE-2023-20520: Buffer Overflow

First published: Tue May 09 2023(Updated: )

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.

Credit: psirt@amd.com psirt@amd.com

Affected SoftwareAffected VersionHow to fix
All of
AMD EPYC 72F3 Firmware=milanpi_1.0.0.5
AMD EPYC 72F3 Firmware
All of
Amd Epyc Server Firmware=milanpi_1.0.0.5
AMD EPYC 7313P
All of
AMD EPYC 7313P Firmware=milanpi_1.0.0.5
AMD EPYC 7313P
All of
Amd Epyc Server Firmware=milanpi_1.0.0.5
AMD EPYC 7343
All of
AMD EPYC 7373X Firmware=milanpi_1.0.0.5
AMD EPYC 7373X
All of
AMD EPYC 73F3 Firmware=milanpi_1.0.0.5
AMD EPYC 73F3
All of
AMD EPYC 7413 Firmware=milanpi_1.0.0.5
AMD EPYC 7413 Firmware
All of
AMD EPYC 7443 Firmware=milanpi_1.0.0.5
AMD EPYC 7443
All of
AMD EPYC 7443P Firmware=milanpi_1.0.0.5
AMD EPYC 7443P
All of
Amd Epyc Server Firmware=milanpi_1.0.0.5
AMD EPYC 7453
All of
AMD EPYC 7473X Firmware=milanpi_1.0.0.5
AMD EPYC 7473X
All of
AMD EPYC 74F3 Firmware=milanpi_1.0.0.5
AMD EPYC 74F3
All of
AMD EPYC 7513 Firmware=milanpi_1.0.0.5
AMD EPYC 7513
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
All of
AMD EPYC 75F3 Firmware=milanpi_1.0.0.5
AMD EPYC 75F3
All of
AMD EPYC 7643 Firmware=milanpi_1.0.0.5
AMD EPYC 7643
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
All of
AMD EPYC 7713P Firmware=milanpi_1.0.0.5
AMD EPYC 7713P 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
All of
AMD EPYC 7232p firmware=romepi_1.0.0.d
AMD EPYC 7232p firmware
All of
AMD EPYC 7252 Firmware=romepi_1.0.0.d
AMD EPYC 7252 Firmware
All of
AMD EPYC 7262 Firmware=romepi_1.0.0.d
AMD EPYC 7262 Firmware
All of
AMD EPYC 7272 firmware=romepi_1.0.0.d
AMD EPYC 7272 firmware
All of
AMD EPYC 7282 Firmware=romepi_1.0.0.d
AMD EPYC 7282
All of
Amd Epyc Server Firmware=romepi_1.0.0.d
AMD EPYC 7302P
All of
AMD EPYC 7302P Firmware=romepi_1.0.0.d
AMD EPYC 7302P
All of
AMD EPYC 7352 firmware=romepi_1.0.0.d
AMD EPYC 7352
All of
Amd Epyc Server Firmware=romepi_1.0.0.d
AMD EPYC 7402
All of
AMD EPYC 7402P Firmware=romepi_1.0.0.d
AMD EPYC 7402P
All of
AMD EPYC 7452 Firmware=romepi_1.0.0.d
AMD EPYC 7452
All of
Amd Epyc Server Firmware=romepi_1.0.0.d
AMD EPYC 7502
All of
AMD EPYC 7502P Firmware=romepi_1.0.0.d
AMD EPYC 7502P
All of
AMD EPYC 7532 Firmware=romepi_1.0.0.d
AMD EPYC 7532
All of
AMD EPYC 7542 Firmware=romepi_1.0.0.d
AMD EPYC 7542
All of
AMD EPYC 7552 Firmware=romepi_1.0.0.d
AMD EPYC Embedded 7552
All of
AMD EPYC 7642 Firmware=romepi_1.0.0.d
AMD EPYC 7642 Firmware
All of
AMD EPYC 7662 Firmware=romepi_1.0.0.d
AMD EPYC 7662
All of
AMD EPYC 7702 Firmware=romepi_1.0.0.d
AMD EPYC 7702
All of
AMD EPYC 7702 Firmware=romepi_1.0.0.d
AMD EPYC 7702p
All of
AMD EPYC 7742 firmware=romepi_1.0.0.d
AMD EPYC 7742 firmware
All of
AMD EPYC 7F32 Firmware=romepi_1.0.0.d
AMD EPYC 7F32 Firmware
All of
AMD EPYC 7F52 Firmware=romepi_1.0.0.d
AMD EPYC 7F52
All of
AMD EPYC 7F72 Firmware=romepi_1.0.0.d
AMD EPYC 7F72
All of
AMD EPYC 7H12 Firmware=romepi_1.0.0.d
AMD EPYC 7H12
All of
AMD EPYC 7251 Firmware=naplespi_1.0.0.h
AMD EPYC 7251
All of
AMD EPYC 7261 Firmware=naplespi_1.0.0.h
AMD Epyc 7261
All of
Amd Epyc Server Firmware=naplespi_1.0.0.h
AMD EPYC 7281 Firmware
All of
Amd Epyc Server Firmware=naplespi_1.0.0.h
AMD EPYC 7301 Firmware
All of
AMD EPYC 7351P Firmware=naplespi_1.0.0.h
AMD EPYC 7351P Firmware
All of
AMD EPYC 7351P Firmware=naplespi_1.0.0.h
AMD EPYC 7351P Firmware
All of
AMD EPYC 7371 Firmware=naplespi_1.0.0.h
AMD EPYC 7371 Firmware
All of
Amd Epyc Server Firmware=naplespi_1.0.0.h
AMD EPYC 7401
All of
AMD EPYC 7401P Firmware=naplespi_1.0.0.h
AMD EPYC 7401P
All of
AMD EPYC 7451 Firmware=naplespi_1.0.0.h
AMD EPYC 7451 Firmware
All of
AMD EPYC 7501 firmware=naplespi_1.0.0.h
AMD EPYC 7501
All of
Amd Epyc Server Firmware=naplespi_1.0.0.h
AMD EPYC 7551 Firmware
All of
AMD EPYC 7551P Firmware=naplespi_1.0.0.h
AMD EPYC 7551P Firmware
All of
Amd Epyc Server Firmware=naplespi_1.0.0.h
AMD EPYC 7571
All of
AMD EPYC 7601 Firmware=naplespi_1.0.0.h
AMD EPYC 7601 Firmware
AMD EPYC 72F3 Firmware=milanpi_1.0.0.5
AMD EPYC 72F3 Firmware
Amd Epyc Server Firmware=milanpi_1.0.0.5
AMD EPYC 7313P
AMD EPYC 7313P Firmware=milanpi_1.0.0.5
AMD EPYC 7313P
Amd Epyc Server Firmware=milanpi_1.0.0.5
AMD EPYC 7343
AMD EPYC 7373X Firmware=milanpi_1.0.0.5
AMD EPYC 7373X
AMD EPYC 73F3 Firmware=milanpi_1.0.0.5
AMD EPYC 73F3
AMD EPYC 7413 Firmware=milanpi_1.0.0.5
AMD EPYC 7413 Firmware
AMD EPYC 7443 Firmware=milanpi_1.0.0.5
AMD EPYC 7443
AMD EPYC 7443P Firmware=milanpi_1.0.0.5
AMD EPYC 7443P
Amd Epyc Server Firmware=milanpi_1.0.0.5
AMD EPYC 7453
AMD EPYC 7473X Firmware=milanpi_1.0.0.5
AMD EPYC 7473X
AMD EPYC 74F3 Firmware=milanpi_1.0.0.5
AMD EPYC 74F3
AMD EPYC 7513 Firmware=milanpi_1.0.0.5
AMD EPYC 7513
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
AMD EPYC 75F3 Firmware=milanpi_1.0.0.5
AMD EPYC 75F3
AMD EPYC 7643 Firmware=milanpi_1.0.0.5
AMD EPYC 7643
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
AMD EPYC 7713P Firmware=milanpi_1.0.0.5
AMD EPYC 7713P 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
AMD EPYC 7232p firmware=romepi_1.0.0.d
AMD EPYC 7232p firmware
AMD EPYC 7252 Firmware=romepi_1.0.0.d
AMD EPYC 7252 Firmware
AMD EPYC 7262 Firmware=romepi_1.0.0.d
AMD EPYC 7262 Firmware
AMD EPYC 7272 firmware=romepi_1.0.0.d
AMD EPYC 7272 firmware
AMD EPYC 7282 Firmware=romepi_1.0.0.d
AMD EPYC 7282
Amd Epyc Server Firmware=romepi_1.0.0.d
AMD EPYC 7302P
AMD EPYC 7302P Firmware=romepi_1.0.0.d
AMD EPYC 7302P
AMD EPYC 7352 firmware=romepi_1.0.0.d
AMD EPYC 7352
Amd Epyc Server Firmware=romepi_1.0.0.d
AMD EPYC 7402
AMD EPYC 7402P Firmware=romepi_1.0.0.d
AMD EPYC 7402P
AMD EPYC 7452 Firmware=romepi_1.0.0.d
AMD EPYC 7452
Amd Epyc Server Firmware=romepi_1.0.0.d
AMD EPYC 7502
AMD EPYC 7502P Firmware=romepi_1.0.0.d
AMD EPYC 7502P
AMD EPYC 7532 Firmware=romepi_1.0.0.d
AMD EPYC 7532
AMD EPYC 7542 Firmware=romepi_1.0.0.d
AMD EPYC 7542
AMD EPYC 7552 Firmware=romepi_1.0.0.d
AMD EPYC Embedded 7552
AMD EPYC 7642 Firmware=romepi_1.0.0.d
AMD EPYC 7642 Firmware
AMD EPYC 7662 Firmware=romepi_1.0.0.d
AMD EPYC 7662
AMD EPYC 7702 Firmware=romepi_1.0.0.d
AMD EPYC 7702
AMD EPYC 7702 Firmware=romepi_1.0.0.d
AMD EPYC 7702p
AMD EPYC 7742 firmware=romepi_1.0.0.d
AMD EPYC 7742 firmware
AMD EPYC 7F32 Firmware=romepi_1.0.0.d
AMD EPYC 7F32 Firmware
AMD EPYC 7F52 Firmware=romepi_1.0.0.d
AMD EPYC 7F52
AMD EPYC 7F72 Firmware=romepi_1.0.0.d
AMD EPYC 7F72
AMD EPYC 7H12 Firmware=romepi_1.0.0.d
AMD EPYC 7H12
AMD EPYC 7251 Firmware=naplespi_1.0.0.h
AMD EPYC 7251
AMD EPYC 7261 Firmware=naplespi_1.0.0.h
AMD Epyc 7261
Amd Epyc Server Firmware=naplespi_1.0.0.h
AMD EPYC 7281 Firmware
Amd Epyc Server Firmware=naplespi_1.0.0.h
AMD EPYC 7301 Firmware
AMD EPYC 7351P Firmware=naplespi_1.0.0.h
AMD EPYC 7351P Firmware
AMD EPYC 7351P Firmware=naplespi_1.0.0.h
AMD EPYC 7351P Firmware
AMD EPYC 7371 Firmware=naplespi_1.0.0.h
AMD EPYC 7371 Firmware
Amd Epyc Server Firmware=naplespi_1.0.0.h
AMD EPYC 7401
AMD EPYC 7401P Firmware=naplespi_1.0.0.h
AMD EPYC 7401P
AMD EPYC 7451 Firmware=naplespi_1.0.0.h
AMD EPYC 7451 Firmware
AMD EPYC 7501 firmware=naplespi_1.0.0.h
AMD EPYC 7501
Amd Epyc Server Firmware=naplespi_1.0.0.h
AMD EPYC 7551 Firmware
AMD EPYC 7551P Firmware=naplespi_1.0.0.h
AMD EPYC 7551P Firmware
Amd Epyc Server Firmware=naplespi_1.0.0.h
AMD EPYC 7571
AMD EPYC 7601 Firmware=naplespi_1.0.0.h
AMD EPYC 7601 Firmware

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Reference Links

Frequently Asked Questions

  • What is CVE-2023-20520 vulnerability about?

    The CVE-2023-20520 vulnerability is about improper access control settings in ASP Bootloader that may allow an attacker to corrupt the return address causing a stack-based buffer overrun potentially leading to arbitrary code execution.

  • What is the severity level of CVE-2023-20520?

    The severity level of CVE-2023-20520 is critical with a CVSS score of 9.8.

  • Which software is affected by CVE-2023-20520?

    The affected software by CVE-2023-20520 includes Amd Epyc 72f3, Amd Epyc 7313, Amd Epyc 7343, and more with specific firmware versions.

  • How can I fix CVE-2023-20520 vulnerability?

    To fix the CVE-2023-20520 vulnerability, it is recommended to apply the security updates provided by the software vendor.

  • Where can I find more information about CVE-2023-20520?

    More information about CVE-2023-20520 can be found at the AMD Product Security Bulletin link: https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001.

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