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

Affected SoftwareAffected VersionHow to fix
Amd Epyc 72f3 Firmware=milanpi_1.0.0.5
Amd Epyc 72f3
Amd Epyc 7313 Firmware=milanpi_1.0.0.5
Amd Epyc 7313
Amd Epyc 7313p Firmware=milanpi_1.0.0.5
Amd Epyc 7313p
Amd Epyc 7343 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
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 7453 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 7543 Firmware=milanpi_1.0.0.5
Amd Epyc 7543
Amd Epyc 7543p Firmware=milanpi_1.0.0.5
Amd Epyc 7543p
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
Amd Epyc 7713 Firmware=milanpi_1.0.0.5
Amd Epyc 7713
Amd Epyc 7713p Firmware=milanpi_1.0.0.5
Amd Epyc 7713p
Amd Epyc 7763 Firmware=milanpi_1.0.0.5
Amd Epyc 7763
Amd Epyc 7773x Firmware=milanpi_1.0.0.5
Amd Epyc 7773x
Amd Epyc 7232p Firmware=romepi_1.0.0.d
Amd Epyc 7232p
Amd Epyc 7252 Firmware=romepi_1.0.0.d
Amd Epyc 7252
Amd Epyc 7262 Firmware=romepi_1.0.0.d
Amd Epyc 7262
Amd Epyc 7272 Firmware=romepi_1.0.0.d
Amd Epyc 7272
Amd Epyc 7282 Firmware=romepi_1.0.0.d
Amd Epyc 7282
Amd Epyc 7302 Firmware=romepi_1.0.0.d
Amd Epyc 7302
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 7402 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 7502 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 7552
Amd Epyc 7642 Firmware=romepi_1.0.0.d
Amd Epyc 7642
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 7702p Firmware=romepi_1.0.0.d
Amd Epyc 7702p
Amd Epyc 7742 Firmware=romepi_1.0.0.d
Amd Epyc 7742
Amd Epyc 7f32 Firmware=romepi_1.0.0.d
Amd Epyc 7f32
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 7281 Firmware=naplespi_1.0.0.h
Amd Epyc 7281
Amd Epyc 7301 Firmware=naplespi_1.0.0.h
Amd Epyc 7301
Amd Epyc 7351 Firmware=naplespi_1.0.0.h
Amd Epyc 7351
Amd Epyc 7351p Firmware=naplespi_1.0.0.h
Amd Epyc 7351p
Amd Epyc 7371 Firmware=naplespi_1.0.0.h
Amd Epyc 7371
Amd Epyc 7401 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
Amd Epyc 7501 Firmware=naplespi_1.0.0.h
Amd Epyc 7501
Amd Epyc 7551 Firmware=naplespi_1.0.0.h
Amd Epyc 7551
Amd Epyc 7551p Firmware=naplespi_1.0.0.h
Amd Epyc 7551p
Amd Epyc 7571 Firmware=naplespi_1.0.0.h
Amd Epyc 7571
Amd Epyc 7601 Firmware=naplespi_1.0.0.h
Amd Epyc 7601

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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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