high
7.8
Advisory Published
Updated

CVE-2021-26335

First published: Tue Nov 16 2021(Updated: )

Improper input and range checking in the AMD Secure Processor (ASP) boot loader image header may allow an attacker to use attacker-controlled values prior to signature validation potentially resulting in arbitrary code execution.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
amd epyc 7003
AMD EPYC 7002 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7002
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7001
AMD EPYC 72F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 72F3 Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7313P
AMD EPYC 7313P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7313P
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7343
AMD EPYC 73F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 73F3
AMD EPYC 7413 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7413 Firmware
AMD EPYC 7443 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7443
AMD EPYC 7443P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7443P
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7453
AMD EPYC 74F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 74F3
AMD EPYC 7513 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7513
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7543 Firmware
AMD EPYC 7543P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7543P Firmware
AMD EPYC 75F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 75F3
AMD EPYC 7643 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7643
AMD EPYC 7663 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7663 Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7713
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7713P Firmware
AMD EPYC 7763 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7763 Firmware
AMD EPYC 7232p firmware<romepi-sp3_1.0.0.c
AMD EPYC 7232p firmware
AMD EPYC 7252 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7252 Firmware
AMD EPYC 7262 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7262 Firmware
AMD EPYC 7272 firmware<romepi-sp3_1.0.0.c
AMD EPYC 7272 firmware
AMD EPYC 7282 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7282
Amd Epyc Server Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7302P
AMD EPYC 7302P Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7302P
AMD EPYC 7352 firmware<romepi-sp3_1.0.0.c
AMD EPYC 7352
Amd Epyc Server Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7402
AMD EPYC 7402P Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7402P
AMD EPYC 7452 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7452
Amd Epyc Server Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7502
AMD EPYC 7502P Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7502P
AMD EPYC 7532 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7532
AMD EPYC 7542 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7542
AMD EPYC 7552 Firmware<romepi-sp3_1.0.0.c
AMD EPYC Embedded 7552
AMD EPYC 7642 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7642 Firmware
AMD EPYC 7662 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7662
AMD EPYC 7702 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7702
AMD EPYC 7702 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7702p
AMD EPYC 7742 firmware<romepi-sp3_1.0.0.c
AMD EPYC 7742 firmware
AMD EPYC 7F32 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7F32 Firmware
AMD EPYC 7F52 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7F52
AMD EPYC 7F72 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7F72
AMD EPYC 7251 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7251
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7281 Firmware
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7301 Firmware
AMD EPYC 7351P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7351P Firmware
AMD EPYC 7351P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7351P Firmware
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7401
AMD EPYC 7401P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7401P
AMD EPYC 7451 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7451 Firmware
AMD EPYC 7501 firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7501
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7551 Firmware
AMD EPYC 7551P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7551P Firmware
AMD EPYC 7601 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7601 Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-26335?

    CVE-2021-26335 is rated as a high severity vulnerability due to the potential for arbitrary code execution.

  • How do I fix CVE-2021-26335?

    To fix CVE-2021-26335, update the AMD EPYC firmware to a version that is not vulnerable, specifically those newer than milanpi-sp3_1.0.0.4.

  • What products are affected by CVE-2021-26335?

    CVE-2021-26335 affects AMD EPYC 7003, 7002, and 7001 firmware versions earlier than the specified fixed releases.

  • What type of attack can leverage CVE-2021-26335?

    An attacker can exploit CVE-2021-26335 to execute arbitrary code by providing controlled values prior to signature validation in the AMD Secure Processor.

  • Is CVE-2021-26335 remotely exploitable?

    CVE-2021-26335 requires local access to the system for exploitation, making it less of a risk for remote attacks.

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