UBUNTU-CVE-2021-38576

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Source
https://ubuntu.com/security/CVE-2021-38576
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-38576.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-38576
Upstream
Published
2022-01-03T22:15:00Z
Modified
2025-09-08T16:47:18Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:16.04:LTS / edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2@0~20160408.ffea0a2c-2ubuntu0.2+esm3?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0~20150106.*

0~20150106.5c2d456b-2

0~20160104.*

0~20160104.c2a892d7-1

0~20160408.*

0~20160408.ffea0a2c-2
0~20160408.ffea0a2c-2ubuntu0.1
0~20160408.ffea0a2c-2ubuntu0.2
0~20160408.ffea0a2c-2ubuntu0.2+esm1
0~20160408.ffea0a2c-2ubuntu0.2+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ovmf",
            "binary_version": "0~20160408.ffea0a2c-2ubuntu0.2+esm3"
        },
        {
            "binary_name": "qemu-efi",
            "binary_version": "0~20160408.ffea0a2c-2ubuntu0.2+esm3"
        }
    ],
    "priority_reason": "edk2 package can't be bricked like real hardware"
}

Ubuntu:Pro:18.04:LTS / edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2@0~20180205.c0d9813c-2ubuntu0.3+esm2?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0~20170911.*

0~20170911.5dfba97c-1

0~20171010.*

0~20171010.234dbcef-1

0~20171027.*

0~20171027.76fd5a66-1

0~20171205.*

0~20171205.a9212288-1

0~20180105.*

0~20180105.0bc94c74-1

0~20180205.*

0~20180205.c0d9813c-1
0~20180205.c0d9813c-2
0~20180205.c0d9813c-2ubuntu0.1
0~20180205.c0d9813c-2ubuntu0.2
0~20180205.c0d9813c-2ubuntu0.3
0~20180205.c0d9813c-2ubuntu0.3+esm1
0~20180205.c0d9813c-2ubuntu0.3+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ovmf",
            "binary_version": "0~20180205.c0d9813c-2ubuntu0.3+esm2"
        },
        {
            "binary_name": "qemu-efi",
            "binary_version": "0~20180205.c0d9813c-2ubuntu0.3+esm2"
        },
        {
            "binary_name": "qemu-efi-aarch64",
            "binary_version": "0~20180205.c0d9813c-2ubuntu0.3+esm2"
        },
        {
            "binary_name": "qemu-efi-arm",
            "binary_version": "0~20180205.c0d9813c-2ubuntu0.3+esm2"
        }
    ],
    "priority_reason": "edk2 package can't be bricked like real hardware"
}

Ubuntu:Pro:20.04:LTS / edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2@0~20191122.bd85bf54-2ubuntu3.6?arch=source&distro=esm-infra/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0~20190606.*

0~20190606.20d2e5a1-2ubuntu1

0~20190828.*

0~20190828.37eef910-3
0~20190828.37eef910-4

0~20191122.*

0~20191122.bd85bf54-1
0~20191122.bd85bf54-1ubuntu1
0~20191122.bd85bf54-2
0~20191122.bd85bf54-2ubuntu1
0~20191122.bd85bf54-2ubuntu2
0~20191122.bd85bf54-2ubuntu3
0~20191122.bd85bf54-2ubuntu3.1
0~20191122.bd85bf54-2ubuntu3.2
0~20191122.bd85bf54-2ubuntu3.3
0~20191122.bd85bf54-2ubuntu3.4
0~20191122.bd85bf54-2ubuntu3.5
0~20191122.bd85bf54-2ubuntu3.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ovmf",
            "binary_version": "0~20191122.bd85bf54-2ubuntu3.6"
        },
        {
            "binary_name": "qemu-efi",
            "binary_version": "0~20191122.bd85bf54-2ubuntu3.6"
        },
        {
            "binary_name": "qemu-efi-aarch64",
            "binary_version": "0~20191122.bd85bf54-2ubuntu3.6"
        },
        {
            "binary_name": "qemu-efi-arm",
            "binary_version": "0~20191122.bd85bf54-2ubuntu3.6"
        }
    ],
    "priority_reason": "edk2 package can't be bricked like real hardware"
}