What is the vulnerability ID for this BIOS bug?

The vulnerability ID for this BIOS bug is CVE-2021-38576.

What is the severity level of CVE-2021-38576?

The severity level of CVE-2021-38576 is high with a CVSS score of 7.5.

How does this BIOS bug affect the system?

This BIOS bug can be used to permanently brick the TPM in multiple ways and can also non-permanently DoS the system.

Which PC models are affected by this BIOS bug?

This BIOS bug affects a particular PC model.

Is there a fix available for CVE-2021-38576?

Please refer to the reference link for information on available fixes for CVE-2021-38576.

Vulnerability/
CVE-2021-38576

high

7.8

3/1/2022

13/1/2022

CVE-2021-38576

First published: Mon Jan 03 2022(Updated: )

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.

Credit: infosec@edk2.groups.io

Affected Software	Affected Version	How to fix
Tianocore EDK2	=201808
Tianocore EDK2	=201811
Tianocore EDK2	=201903
Tianocore EDK2	=201905
Tianocore EDK2	=201908
Tianocore EDK2	=201911
Tianocore EDK2	=202002
Tianocore EDK2	=202005
Tianocore EDK2	=202008
Tianocore EDK2	=202011
Tianocore EDK2	=202102
Tianocore EDK2	=202105

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Reference Links

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

Frequently Asked Questions

What is the vulnerability ID for this BIOS bug?
The vulnerability ID for this BIOS bug is CVE-2021-38576.
What is the severity level of CVE-2021-38576?
The severity level of CVE-2021-38576 is high with a CVSS score of 7.5.
How does this BIOS bug affect the system?
This BIOS bug can be used to permanently brick the TPM in multiple ways and can also non-permanently DoS the system.
Which PC models are affected by this BIOS bug?
This BIOS bug affects a particular PC model.
Is there a fix available for CVE-2021-38576?
Please refer to the reference link for information on available fixes for CVE-2021-38576.

collector/nvd-index
agent/references
agent/severity
agent/author
agent/tags
agent/event
agent/type
agent/description
agent/first-publish-date
agent/last-modified-date
agent/softwarecombine
vendor/tianocore
canonical/tianocore edk2
version/tianocore edk2/201808
version/tianocore edk2/201811
version/tianocore edk2/201903
version/tianocore edk2/201905
version/tianocore edk2/201908
version/tianocore edk2/201911
version/tianocore edk2/202002
version/tianocore edk2/202005
version/tianocore edk2/202008
version/tianocore edk2/202011
version/tianocore edk2/202102
version/tianocore edk2/202105

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