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HIGH · 7.8

CVE-2021-26315

When the AMD Platform Security Processor (PSP) boot rom loads, authenticates, and subsequently decrypts an encrypted FW, due to insufficient verification of the integrity of decrypted image, arbitrary...

Vulnerability Description

When the AMD Platform Security Processor (PSP) boot rom loads, authenticates, and subsequently decrypts an encrypted FW, due to insufficient verification of the integrity of decrypted image, arbitrary code may be executed in the PSP when encrypted firmware images are used.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
AmdEpyc 7003 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7003-
AmdEpyc 72F3 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 72F3-
AmdEpyc 7313 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7313-
AmdEpyc 7313P Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7313P-
AmdEpyc 7343 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7343-
AmdEpyc 73F3 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 73F3-
AmdEpyc 7413 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7413-
AmdEpyc 7443 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7443-
AmdEpyc 7443P Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7443P-
AmdEpyc 7453 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7453-

Related Weaknesses (CWE)

CWE-345

References

FAQ

What is CVE-2021-26315?

CVE-2021-26315 is a vulnerability with a CVSS score of 7.8 (HIGH). When the AMD Platform Security Processor (PSP) boot rom loads, authenticates, and subsequently decrypts an encrypted FW, due to insufficient verification of the integrity of decrypted image, arbitrary...

How severe is CVE-2021-26315?

CVE-2021-26315 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-26315?

Check the references section above for vendor advisories and patch information. Affected products include: Amd Epyc 7003 Firmware, Amd Epyc 7003, Amd Epyc 72F3 Firmware, Amd Epyc 72F3, Amd Epyc 7313 Firmware.