medium
6.5
CWE
20
Advisory Published
Updated

CVE-2023-20527: Input Validation

First published: Tue Jan 10 2023(Updated: )

Improper syscall input validation in the ASP Bootloader may allow a privileged attacker to read memory out-of-bounds, potentially leading to 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
AMD EPYC 7F72 Firmware<romepi_1.0.0.c
AMD EPYC 7F72
AMD EPYC 7F52 Firmware<romepi_1.0.0.c
AMD EPYC 7F52
AMD EPYC 7F32 Firmware<romepi_1.0.0.c
AMD EPYC 7F32 Firmware
AMD EPYC 7742 firmware<romepi_1.0.0.c
AMD EPYC 7742 firmware
AMD EPYC 7702 Firmware<romepi_1.0.0.c
AMD EPYC 7702p
AMD EPYC 7702 Firmware<romepi_1.0.0.c
AMD EPYC 7702
AMD EPYC 7662 Firmware<romepi_1.0.0.c
AMD EPYC 7662
AMD EPYC 7642 Firmware<romepi_1.0.0.c
AMD EPYC 7642 Firmware
AMD EPYC 7552 Firmware<romepi_1.0.0.c
AMD EPYC Embedded 7552
AMD EPYC 7542 Firmware<romepi_1.0.0.c
AMD EPYC 7542
AMD EPYC 7532 Firmware<romepi_1.0.0.c
AMD EPYC 7532
AMD EPYC 7502P Firmware<romepi_1.0.0.c
AMD EPYC 7502P
Amd Epyc Server Firmware<romepi_1.0.0.c
AMD EPYC 7502
AMD EPYC 7452 Firmware<romepi_1.0.0.c
AMD EPYC 7452
Amd Epyc Server Firmware<romepi_1.0.0.c
AMD EPYC 7402
AMD EPYC 7402P Firmware<romepi_1.0.0.c
AMD EPYC 7402P
AMD EPYC 7352 firmware<romepi_1.0.0.c
AMD EPYC 7352
AMD EPYC 7302P Firmware<romepi_1.0.0.c
AMD EPYC 7302P
Amd Epyc Server Firmware<romepi_1.0.0.c
AMD EPYC 7302P
AMD EPYC 7282 Firmware<romepi_1.0.0.c
AMD EPYC 7282
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 7002
Amd Epyc Server Firmware<milanpi_1.0.0.5
amd epyc 7003
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 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 Server Firmware<milanpi_1.0.0.5
amd epyc 7743
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 Server Firmware<naplespi_1.0.0.g
AMD EPYC 7001
AMD EPYC 7251 Firmware<naplespi_1.0.0.g
AMD EPYC 7251
AMD EPYC 7261 Firmware<naplespi_1.0.0.g
AMD Epyc 7261
Amd Epyc Server Firmware<naplespi_1.0.0.g
AMD EPYC 7281 Firmware
Amd Epyc Server Firmware<naplespi_1.0.0.g
AMD EPYC 7301 Firmware
AMD EPYC 7351P Firmware<naplespi_1.0.0.g
AMD EPYC 7351P Firmware
AMD EPYC 7371 Firmware<naplespi_1.0.0.g
AMD EPYC 7371 Firmware
Amd Epyc Server Firmware<naplespi_1.0.0.g
AMD EPYC 7401
AMD EPYC 7401P Firmware<naplespi_1.0.0.g
AMD EPYC 7401P
AMD EPYC 7451 Firmware<naplespi_1.0.0.g
AMD EPYC 7451 Firmware
AMD EPYC 7501 firmware<naplespi_1.0.0.g
AMD EPYC 7501
Amd Epyc Server Firmware<naplespi_1.0.0.g
AMD EPYC 7551 Firmware
AMD EPYC 7551P Firmware<naplespi_1.0.0.g
AMD EPYC 7551P Firmware
AMD EPYC 7601 Firmware<naplespi_1.0.0.g
AMD EPYC 7601 Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-20527?

    CVE-2023-20527 is considered a high-severity vulnerability due to its potential to allow a privileged attacker to read memory out-of-bounds.

  • How do I fix CVE-2023-20527?

    To remediate CVE-2023-20527, apply the latest firmware updates provided by AMD for affected Epyc processors.

  • Which AMD Epyc firmware versions are affected by CVE-2023-20527?

    CVE-2023-20527 affects several AMD Epyc firmware versions, specifically those using romepi_1.0.0.c and certain others that need verification.

  • What potential impacts can CVE-2023-20527 have?

    The impact of CVE-2023-20527 includes possible denial-of-service conditions due to unauthorized memory access.

  • Is CVE-2023-20527 related to privilege escalation?

    CVE-2023-20527 can be exploited by a privileged attacker, which indirectly relates to privilege escalation concerns.

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