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HIGH · 7.1

CVE-2021-26408

Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy guest migration potentially resulting in loss of guest's integrity or confidentiality.

Vulnerability Description

Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy guest migration potentially resulting in loss of guest's integrity or confidentiality.

CVSS Score

7.1

HIGH

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

Affected Products

VendorProductVersions
AmdEpyc 7002 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7002-
AmdEpyc 7001 Firmware< naplespi-sp3_1.0.0.g
AmdEpyc 7001-
AmdEpyc 7232P Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7232P-
AmdEpyc 7252 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7252-
AmdEpyc 7262 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7262-
AmdEpyc 7272 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7272-
AmdEpyc 7282 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7282-
AmdEpyc 7302 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7302-
AmdEpyc 7302P Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7302P-
AmdEpyc 7352 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7352-

References

FAQ

What is CVE-2021-26408?

CVE-2021-26408 is a vulnerability with a CVSS score of 7.1 (HIGH). Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy guest migration potentially resulting in loss of guest's integrity or confidentiality.

How severe is CVE-2021-26408?

CVE-2021-26408 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-26408?

Check the references section above for vendor advisories and patch information. Affected products include: Amd Epyc 7002 Firmware, Amd Epyc 7002, Amd Epyc 7001 Firmware, Amd Epyc 7001, Amd Epyc 7232P Firmware.