CVE-2021-38576

published 2022-01-03

CVE-2021-38576: A BIOS bug in firmware for a particular PC model leaves the Platform authorization value empty. This can be used to permanently brick the TPM in multiple ways…

Priority P3 37 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

A BIOS bug in firmware for a particular PC model leaves the Platform authorization value empty. This can be used to permanently brick the TPM in multiple ways, as well as to non-permanently DoS the system.

Affected

17 ranges

Vendor	Product	Version range	Fixed in
debian	edk2	< edk2 2021.11-1 (bookworm)	edk2 2021.11-1 (bookworm)
tianocore	edk2	—	—
tianocore	edk2	—	—
tianocore	edk2	—	—
tianocore	edk2	—	—
tianocore	edk2	—	—
tianocore	edk2	—	—
tianocore	edk2	—	—
tianocore	edk2	—	—
tianocore	edk2	—	—
tianocore	edk2	—	—
tianocore	edk2	—	—
tianocore	edk2	—	—
tianocore	edk2	>= 0 < 2020.11-2+deb11u3	2020.11-2+deb11u3
tianocore	edk2	>= 0 < 2021.11-1	2021.11-1
tianocore	edk2	>= 0 < 2021.11-1	2021.11-1
tianocore	edk2	>= 0 < 2021.11-1	2021.11-1

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v2.0 7.8 HIGH AV:N/AC:L/Au:N/C:N/I:N/A:C

osv 7.5 HIGH

vendor_debian 7.5 HIGH

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