medium
4.7
CWE
1284 190
Advisory Published
Updated

CVE-2021-26347: Integer Overflow

First published: Wed May 11 2022(Updated: )

Failure to validate the integer operand in ASP (AMD Secure Processor) bootloader may allow an attacker to introduce an integer overflow in the L2 directory table in SPI flash resulting in a potential denial of service.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
AMD EPYC 7763 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7763 Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7713P Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7713
AMD EPYC 7663 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7663 Firmware
AMD EPYC 7643 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7643
AMD EPYC 75F3 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 75F3
AMD EPYC 7543P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7543P Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7543 Firmware
AMD EPYC 7513 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7513
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7453
AMD EPYC 74F3 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 74F3
AMD EPYC 7443P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7443P
AMD EPYC 7443 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7443
AMD EPYC 7413 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7413 Firmware
AMD EPYC 73F3 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 73F3
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7343
AMD EPYC 7313P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7313P
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7313P
AMD EPYC 72F3 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 72F3 Firmware
AMD EPYC 7773X Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7773X
AMD EPYC 7473X Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7473X
AMD EPYC 7573X Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7573X
AMD EPYC 7373X Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7373X
AMD EPYC 7002 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7002
AMD EPYC 7232p firmware<romepi-sp3_1.0.0.d
AMD EPYC 7232p firmware
AMD EPYC 7252 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7252 Firmware
AMD EPYC 7262 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7262 Firmware
AMD EPYC 7272 firmware<romepi-sp3_1.0.0.d
AMD EPYC 7272 firmware
AMD EPYC 7282 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7282
Amd Epyc Server Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7302P
AMD EPYC 7302P Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7302P
AMD EPYC 7352 firmware<romepi-sp3_1.0.0.d
AMD EPYC 7352
Amd Epyc Server Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7402
AMD EPYC 7402P Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7402P
AMD EPYC 7452 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7452
Amd Epyc Server Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7502
AMD EPYC 7502P Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7502P
AMD EPYC 7532 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7532
AMD EPYC 7542 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7542
AMD EPYC 7552 Firmware<romepi-sp3_1.0.0.d
AMD EPYC Embedded 7552
AMD EPYC 7642 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7642 Firmware
AMD EPYC 7662 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7662
AMD EPYC 7702 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7702
AMD EPYC 7702 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7702p
AMD EPYC 7742 firmware<romepi-sp3_1.0.0.d
AMD EPYC 7742 firmware
AMD EPYC 7F32 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7F32 Firmware
AMD EPYC 7H12 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7H12
AMD EPYC 7F72 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7F72
AMD EPYC 7F52 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7F52

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-26347?

    CVE-2021-26347 has a severity rating that indicates a potential denial of service risk due to integer overflow vulnerabilities.

  • How do I fix CVE-2021-26347?

    To fix CVE-2021-26347, you should update the affected AMD EPYC firmware to a version above milanpi-sp3_1.0.0.7.

  • Which AMD products are affected by CVE-2021-26347?

    CVE-2021-26347 affects several AMD EPYC firmware versions, primarily those prior to milanpi-sp3_1.0.0.7.

  • What are the potential impacts of CVE-2021-26347?

    The potential impacts of CVE-2021-26347 include system instability and possible service interruptions due to the integer overflow vulnerability.

  • Is there a workaround for CVE-2021-26347?

    Currently, the best workaround for CVE-2021-26347 is to ensure that all affected AMD EPYC systems are updated to the latest firmware version.

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