CVE-2021-38576 — EDK II vulnerability

5 documents5 sources

Severity

7.5HIGHNVD

EPSS

0.3%

top 50.94%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Tianocore Edk2 Tianocore EDK II

Timeline

PublishedJan 3

Latest updateJan 4

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶Debiantianocore/edk2< 2020.11-2+deb11u3+3

▶NVDtianocore/edk212 versions+11

▶CVEListV5tianocore/edk_iiedk2-stable202105, edk2-stable202102, edk2-stable202011, edk2-stable202008, edk2-stable202005, edk2-stable202002, edk2-stable201911, edk2-stable201908, edk2-stable201905, edk2-stable201903, edk2-stable201811, edk2-stable201808

🔴Vulnerability Details

GHSA

GHSA-h53v-fr53-7vvj: A BIOS bug in firmware for a particular PC model leaves the Platform authorization value empty↗2022-01-04

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OSV

CVE-2021-38576: A BIOS bug in firmware for a particular PC model leaves the Platform authorization value empty↗2022-01-03

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CVEList

CVE-2021-38576: A BIOS bug in firmware for a particular PC model leaves the Platform authorization value empty↗2022-01-03

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📋Vendor Advisories

Debian

CVE-2021-38576: edk2 - A BIOS bug in firmware for a particular PC model leaves the Platform authorizati...↗2021

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