medium
4.6
CWE
20
Advisory Published
Updated

CVE-2023-20526: Input Validation

First published: Tue Nov 14 2023(Updated: )

Insufficient input validation in the ASP Bootloader may enable a privileged attacker with physical access to expose the contents of ASP memory potentially leading to a loss of confidentiality.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
All of
Amd Epyc Server Firmware<naplespi_1.0.0.h
AMD EPYC 7001 Firmware
All of
AMD EPYC 7251 Firmware<naplespi_1.0.0.h
AMD EPYC 7251 Firmware
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 Server
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 7351 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 7401P Firmware<naplespi_1.0.0.h
AMD EPYC 7401 Firmware
All of
AMD EPYC 7401P Firmware<naplespi_1.0.0.h
AMD EPYC 7401P Firmware
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 Server
All of
AMD EPYC 7551P 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 7601 Firmware<naplespi_1.0.0.h
AMD EPYC 7601 Firmware
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 Firmware
All of
Amd Epyc Server Firmware<romepi_1.0.0.d
AMD EPYC 7302 Firmware
All of
AMD EPYC 7302P Firmware<romepi_1.0.0.d
AMD EPYC 7302P Firmware
All of
AMD EPYC Firmware<romepi_1.0.0.d
AMD EPYC 7352 firmware
All of
Amd Epyc Server Firmware<romepi_1.0.0.d
AMD EPYC 7402 Firmware
All of
AMD EPYC 7402P Firmware<romepi_1.0.0.d
AMD EPYC 7402P Firmware
All of
AMD EPYC 7452 Firmware<romepi_1.0.0.d
AMD EPYC Server
All of
AMD EPYC 7502 Firmware<romepi_1.0.0.d
AMD EPYC 7502 firmware
All of
AMD EPYC 7502P Firmware<romepi_1.0.0.d
AMD EPYC 7502P Firmware
All of
AMD EPYC 7532 Firmware<romepi_1.0.0.d
AMD EPYC 7532 Firmware
All of
AMD EPYC 7542 Firmware<romepi_1.0.0.d
AMD EPYC Server
All of
AMD EPYC 7552 Firmware<romepi_1.0.0.d
AMD EPYC 7552 Firmware
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 Firmware
All of
AMD EPYC 7702p firmware<romepi_1.0.0.d
AMD EPYC Server
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 Server
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 Firmware
All of
AMD EPYC 7F72<romepi_1.0.0.d
AMD EPYC 7F72 Firmware
All of
AMD EPYC 7H12 Firmware<romepi_1.0.0.d
AMD EPYC 7H12 Firmware
All of
AMD EPYC 7763 Firmware<milanpi_1.0.0.5
AMD EPYC 7763 Firmware
All of
AMD EPYC 7713P Firmware<milanpi_1.0.0.5
AMD EPYC 7713P Firmware
All of
AMD EPYC 7713P Firmware<milanpi_1.0.0.5
AMD EPYC 7713 Firmware
All of
AMD EPYC 7663P Firmware<milanpi_1.0.0.5
AMD EPYC 7663P Firmware
All of
AMD EPYC 7663 Firmware<milanpi_1.0.0.5
AMD EPYC 7663 Firmware
All of
AMD EPYC Firmware<milanpi_1.0.0.5
AMD EPYC 7643P Firmware
All of
AMD EPYC 7773X Firmware<milanpi_1.0.0.5
AMD EPYC 7773X Firmware
All of
AMD EPYC 7643P Firmware<milanpi_1.0.0.5
AMD EPYC 7643 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 7543P Firmware<milanpi_1.0.0.5
AMD EPYC 7543P Firmware
All of
Amd Epyc Server Firmware<milanpi_1.0.0.5
AMD EPYC 7543 Firmware
All of
AMD EPYC 7513 Firmware<milanpi_1.0.0.5
AMD EPYC 7513 Firmware
All of
AMD EPYC 7473X Firmware<milanpi_1.0.0.5
AMD EPYC 7473X 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 7443P Firmware<milanpi_1.0.0.5
AMD EPYC 7443P Firmware
All of
AMD EPYC 7443P Firmware<milanpi_1.0.0.5
AMD EPYC 7443P
All of
AMD EPYC 7413 Firmware<milanpi_1.0.0.5
AMD EPYC 7413 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 Server Firmware<milanpi_1.0.0.5
AMD EPYC 7343 Firmware
All of
AMD EPYC 7313P Firmware<milanpi_1.0.0.5
AMD EPYC 7313P Firmware
All of
AMD EPYC Firmware<milanpi_1.0.0.5
AMD EPYC 7313 Firmware
All of
AMD EPYC 7303P Firmware<milanpi_1.0.0.5
AMD EPYC 7303P
All of
AMD EPYC 7303 Firmware<milanpi_1.0.0.5
AMD EPYC 7303 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 7203P Firmware
All of
AMD EPYC 7203 Firmware<milanpi_1.0.0.5
AMD EPYC 7203 Firmware
All of
AMD Ryzen Threadripper 2990WX<summitpi-sp3r2_1.1.0.7
AMD Ryzen Threadripper 2990WX
All of
AMD Ryzen Threadripper 2970WX Firmware<summitpi-sp3r2_1.1.0.7
AMD Ryzen Threadripper 2970WX Firmware
All of
AMD Ryzen Threadripper 2950X Firmware<summitpi-sp3r2_1.1.0.7
AMD Ryzen Threadripper 2950X Firmware
All of
AMD Ryzen Threadripper 2920X<summitpi-sp3r2_1.1.0.7
AMD Ryzen Threadripper 2920X Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-20526?

    CVE-2023-20526 is classified as a potentially high severity vulnerability due to the risk of unauthorized memory access by a privileged attacker.

  • How do I fix CVE-2023-20526?

    To remediate CVE-2023-20526, users should apply the latest firmware updates provided by AMD for affected AMD EPYC and Ryzen Threadripper models.

  • Who is affected by CVE-2023-20526?

    CVE-2023-20526 affects various AMD EPYC 7001 series processors and Ryzen Threadripper models with specific firmware versions.

  • What kind of attack does CVE-2023-20526 enable?

    CVE-2023-20526 enables a physical attacker with privileged access to potentially expose sensitive information from ASP memory.

  • Is there a workaround for CVE-2023-20526?

    Currently, there are no known workarounds for CVE-2023-20526 other than applying firmware updates.

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