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HIGH · 7.2

CVE-2021-26344

An out of bounds memory write when processing the AMD PSP1 Configuration Block (APCB) could allow an attacker with access the ability to modify the BIOS image, and the ability to sign the resulting im...

Vulnerability Description

An out of bounds memory write when processing the AMD PSP1 Configuration Block (APCB) could allow an attacker with access the ability to modify the BIOS image, and the ability to sign the resulting image, to potentially modify the APCB block resulting in arbitrary code execution.

CVSS Score

7.2

HIGH

CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
AmdEpyc 7203 Firmware< milanpi_1.0.0.5
AmdEpyc 7203-
AmdEpyc 7203P Firmware< milanpi_1.0.0.5
AmdEpyc 7203P-
AmdEpyc 72F3 Firmware< milanpi_1.0.0.5
AmdEpyc 72F3-
AmdEpyc 7303 Firmware< milanpi_1.0.0.5
AmdEpyc 7303-
AmdEpyc 7303P Firmware< milanpi_1.0.0.5
AmdEpyc 7303P-
AmdEpyc 7313 Firmware< milanpi_1.0.0.5
AmdEpyc 7313-
AmdEpyc 7313P Firmware< milanpi_1.0.0.5
AmdEpyc 7313P-
AmdEpyc 7343 Firmware< milanpi_1.0.0.5
AmdEpyc 7343-
AmdEpyc 73F3 Firmware< milanpi_1.0.0.5
AmdEpyc 73F3-
AmdEpyc 7373X Firmware< milanpi_1.0.0.5
AmdEpyc 7373X-

Related Weaknesses (CWE)

CWE-787

References

FAQ

What is CVE-2021-26344?

CVE-2021-26344 is a vulnerability with a CVSS score of 7.2 (HIGH). An out of bounds memory write when processing the AMD PSP1 Configuration Block (APCB) could allow an attacker with access the ability to modify the BIOS image, and the ability to sign the resulting im...

How severe is CVE-2021-26344?

CVE-2021-26344 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-26344?

Check the references section above for vendor advisories and patch information. Affected products include: Amd Epyc 7203 Firmware, Amd Epyc 7203, Amd Epyc 7203P Firmware, Amd Epyc 7203P, Amd Epyc 72F3 Firmware.