high
7.1
CWE
20
Advisory Published
Updated

CVE-2021-26370: Input Validation

First published: Tue May 10 2022(Updated: )

Improper validation of destination address in SVC_LOAD_FW_IMAGE_BY_INSTANCE and SVC_LOAD_BINARY_BY_ATTRIB in a malicious UApp or ABL may allow an attacker to overwrite arbitrary bootloader memory with SPI ROM contents resulting in a loss of integrity and availability.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
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
AMD EPYC 7773X Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7773X
AMD EPYC 7473X Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7473X
AMD EPYC 7573X Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7573X
AMD EPYC 7373X Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7373X
AMD EPYC 7002 Firmware<romepi-sp3_1.0.0.c
AMD EPYC 7002
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 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

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-26370?

    CVE-2021-26370 is classified as a medium severity vulnerability due to its potential to allow an attacker to overwrite arbitrary bootloader memory.

  • How do I fix CVE-2021-26370?

    To fix CVE-2021-26370, update the affected AMD EPYC firmware to the latest version that is not vulnerable.

  • What products are affected by CVE-2021-26370?

    CVE-2021-26370 affects multiple AMD EPYC firmware versions that are below milanpi-sp3_1.0.0.4.

  • What can an attacker achieve with CVE-2021-26370?

    An attacker exploiting CVE-2021-26370 may achieve unauthorized access and modification of the bootloader memory, leading to a loss of system integrity and availability.

  • When was CVE-2021-26370 disclosed?

    CVE-2021-26370 was publicly disclosed as part of AMD's Product Security Bulletin on October 2021.

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