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HIGH · 7.1

CVE-2021-26370

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...

Vulnerability Description

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.

CVSS Score

7.1

HIGH

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

Affected Products

VendorProductVersions
AmdEpyc 7763 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7763-
AmdEpyc 7713P Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7713P-
AmdEpyc 7713 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7713-
AmdEpyc 7663 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7663-
AmdEpyc 7643 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7643-
AmdEpyc 75F3 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 75F3-
AmdEpyc 7543P Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7543P-
AmdEpyc 7543 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7543-
AmdEpyc 7513 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7513-
AmdEpyc 7453 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7453-

Related Weaknesses (CWE)

CWE-20

References

FAQ

What is CVE-2021-26370?

CVE-2021-26370 is a vulnerability with a CVSS score of 7.1 (HIGH). 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...

How severe is CVE-2021-26370?

CVE-2021-26370 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-2021-26370?

Check the references section above for vendor advisories and patch information. Affected products include: Amd Epyc 7763 Firmware, Amd Epyc 7763, Amd Epyc 7713P Firmware, Amd Epyc 7713P, Amd Epyc 7713 Firmware.