CVE-2021-38576

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 03-01-2022 11:15

Last modified: - 13-01-2022 05:21

Total changes: - 3

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Low

Attack complexity

Network

Attack vector

High

Availability

None

Confidentiality

None

Integrity

None

Privileges required

Unchanged

Scope

None

User interaction

7.5

Base score

3.9

3.6

Exploitability score

Impact score

Verification logic

vendor=tianocore AND product=edk2 AND version=201808

vendor=tianocore AND product=edk2 AND version=201811

vendor=tianocore AND product=edk2 AND version=201903

vendor=tianocore AND product=edk2 AND version=201905

vendor=tianocore AND product=edk2 AND version=201908

vendor=tianocore AND product=edk2 AND version=201911

vendor=tianocore AND product=edk2 AND version=202002

vendor=tianocore AND product=edk2 AND version=202005

vendor=tianocore AND product=edk2 AND version=202008

vendor=tianocore AND product=edk2 AND version=202011

vendor=tianocore AND product=edk2 AND version=202102

vendor=tianocore AND product=edk2 AND version=202105

Reference

https://bugzilla.tianocore.org/show_bug.cgi?id=3499

Keywords

CVE-2021-38576

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2021-38576

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures