medium
5.5
CWE
668
Advisory Published
Updated

CVE-2021-26343

First published: Tue Jan 10 2023(Updated: )

Insufficient validation in ASP BIOS and DRTM commands may allow malicious supervisor x86 software to disclose the contents of sensitive memory which may result in information disclosure.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
Amd Epyc 7003 Firmware<milanpi_1.0.0.3
Amd Epyc 7003
Amd Epyc 72f3 Firmware<milanpi_1.0.0.3
Amd Epyc 72f3
Amd Epyc 7313 Firmware<milanpi_1.0.0.3
Amd Epyc 7313
Amd Epyc 7313p Firmware<milanpi_1.0.0.3
Amd Epyc 7313p
Amd Epyc 7343 Firmware<milanpi_1.0.0.3
Amd Epyc 7343
Amd Epyc 7373x Firmware<milanpi_1.0.0.3
Amd Epyc 7373x
Amd Epyc 73f3 Firmware<milanpi_1.0.0.3
Amd Epyc 73f3
Amd Epyc 7413 Firmware<milanpi_1.0.0.3
Amd Epyc 7413
Amd Epyc 7443 Firmware<milanpi_1.0.0.3
Amd Epyc 7443
Amd Epyc 7443p Firmware<milanpi_1.0.0.3
Amd Epyc 7443p
Amd Epyc 7453 Firmware<milanpi_1.0.0.3
Amd Epyc 7453
Amd Epyc 74f3 Firmware<milanpi_1.0.0.3
Amd Epyc 74f3
Amd Epyc 7513 Firmware<milanpi_1.0.0.3
Amd Epyc 7513
Amd Epyc 7543 Firmware<milanpi_1.0.0.3
Amd Epyc 7543
Amd Epyc 7543p Firmware<milanpi_1.0.0.3
Amd Epyc 7543p
Amd Epyc 7573x Firmware<milanpi_1.0.0.3
Amd Epyc 7573x
Amd Epyc 75f3 Firmware<milanpi_1.0.0.3
Amd Epyc 75f3
Amd Epyc 7643 Firmware<milanpi_1.0.0.3
Amd Epyc 7643
Amd Epyc 7663 Firmware<milanpi_1.0.0.3
Amd Epyc 7663
Amd Epyc 7713 Firmware<milanpi_1.0.0.3
Amd Epyc 7713
Amd Epyc 7713p Firmware<milanpi_1.0.0.3
Amd Epyc 7713p
Amd Epyc 7743 Firmware<milanpi_1.0.0.3
Amd Epyc 7743
Amd Epyc 7763 Firmware<milanpi_1.0.0.3
Amd Epyc 7763
Amd Epyc 7773x Firmware<milanpi_1.0.0.3
Amd Epyc 7773x

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-26343?

    CVE-2021-26343 is a vulnerability that allows malicious supervisor x86 software to disclose the contents of sensitive memory, resulting in information disclosure.

  • Which software is affected by CVE-2021-26343?

    The Amd Epyc 7003 Firmware versions up to exclusive milanpi_1.0.0.3 and Amd Epyc 72f3, 7313, 7313p, 7343, 7373x, 73f3, 7413, 7443, 7443p, 7453, 74f3, 7513, 7543, 7543p, 7573x, 75f3, 7643, 7663, 7713, 7713p, 7743, 7763, and 7773x are vulnerable to this vulnerability.

  • What is the severity of CVE-2021-26343?

    The severity of CVE-2021-26343 is medium with a CVSS score of 5.5.

  • How can I fix CVE-2021-26343?

    To fix CVE-2021-26343, it is recommended to apply the relevant security patches provided by AMD.

  • Where can I find more information about CVE-2021-26343?

    You can find more information about CVE-2021-26343 on the AMD Product Security Bulletin at https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032.

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