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 EDK II | =201808 | |
| Tianocore EDK II | =201811 | |
| Tianocore EDK II | =201903 | |
| Tianocore EDK II | =201905 | |
| Tianocore EDK II | =201908 | |
| Tianocore EDK II | =201911 | |
| Tianocore EDK II | =202002 | |
| Tianocore EDK II | =202005 | |
| Tianocore EDK II | =202008 | |
| Tianocore EDK II | =202011 | |
| Tianocore EDK II | =202102 | |
| Tianocore EDK II | =202105 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
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.
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/last-modified-date
- agent/references
- agent/author
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/tianocore
- canonical/tianocore edk ii
- version/tianocore edk ii/201808
- version/tianocore edk ii/201811
- version/tianocore edk ii/201903
- version/tianocore edk ii/201905
- version/tianocore edk ii/201908
- version/tianocore edk ii/201911
- version/tianocore edk ii/202002
- version/tianocore edk ii/202005
- version/tianocore edk ii/202008
- version/tianocore edk ii/202011
- version/tianocore edk ii/202102
- version/tianocore edk ii/202105