medium
5.5
CWE
77 20
Advisory Published
Updated

CVE-2021-26321: Command Injection

First published: Tue Nov 16 2021(Updated: )

Insufficient ID command validation in the SEV Firmware may allow a local authenticated attacker to perform a denial of service of the PSP.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
AMD EPYC 7601 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7601 Firmware
AMD EPYC 7551P Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7551P Firmware
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7551 Firmware
AMD EPYC 7501 firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7501
AMD EPYC 7451 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7451 Firmware
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7401
AMD EPYC 7371 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7371 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 7301 Firmware
Amd Epyc Server Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7281 Firmware
AMD EPYC 7261 Firmware<naplespi-sp3_1.0.0.g
AMD Epyc 7261
AMD EPYC 7251 Firmware<naplespi-sp3_1.0.0.g
AMD EPYC 7251
AMD EPYC 7F72 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7F72
AMD EPYC 7F52 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7F52
AMD EPYC 7F32 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7F32 Firmware
AMD EPYC 7H12 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7H12
AMD EPYC 7742 firmware<romepi-sp3_1.0.0.c
AMD EPYC 7742 firmware
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 7662 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7662
AMD EPYC 7642 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7642 Firmware
AMD EPYC 7552 Firmware<romepi-sp3_1.0.0.c
AMD EPYC Embedded 7552
AMD EPYC 7542 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7542
AMD EPYC 7532 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7532
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 7452 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7452
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 7352 firmware<romepi-sp3_1.0.0.c
AMD EPYC 7352
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 7282 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7282
AMD EPYC 7272 firmware<romepi-sp3_1.0.0.c
AMD EPYC 7272 firmware
AMD EPYC 7262 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7262 Firmware
AMD EPYC 7252 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7252 Firmware
AMD EPYC 7232p firmware<romepi-sp3_1.0.0.c
AMD EPYC 7232p firmware
AMD EPYC 7763 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7763 Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7713P Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7713
AMD EPYC 7663 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7663 Firmware
AMD EPYC 7643 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7643
AMD EPYC 75F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 75F3
AMD EPYC 7543P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7543P Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7543 Firmware
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 7453
AMD EPYC 74F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 74F3
AMD EPYC 7443P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7443P
AMD EPYC 7443 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7443
AMD EPYC 7413 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7413 Firmware
AMD EPYC 73F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 73F3
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7343
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 7313P
AMD EPYC 72F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 72F3 Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-26321?

    CVE-2021-26321 has a severity rating classified as high due to its potential to enable local authenticated attackers to cause denial of service.

  • How do I fix CVE-2021-26321?

    To address CVE-2021-26321, users should update the AMD Epyc firmware to the latest version that is not affected by this vulnerability.

  • Who is affected by CVE-2021-26321?

    CVE-2021-26321 affects specific versions of the AMD Epyc firmware including the Epyc 7601, 7551p, 7551, 7501, and others prior to the specified secure versions.

  • What are the consequences of CVE-2021-26321?

    If exploited, CVE-2021-26321 can lead to a denial of service situation where the PSP becomes unresponsive.

  • Is CVE-2021-26321 exploit code available?

    Currently, there is no public exploit code available for CVE-2021-26321, but the vulnerability remains critical for affected systems.

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