CVE-2021-38576

CVSS V2 High 7.8 CVSS V3 High 7.5
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.
Overview
  • CVE ID
  • CVE-2021-38576
  • Assigner
  • infosec@edk2.groups.io
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-01-03T22:15:09
  • Last Modified Date
  • 2022-01-13T16:21:04
Weakness Enumerations
CWE URL
NVD-CWE-noinfo http://cwe.mitre.org/data/definitions/NVD-noinfo.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:tianocore:edk2:201808:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:tianocore:edk2:201811:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:tianocore:edk2:201903:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:tianocore:edk2:201905:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:tianocore:edk2:201908:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:tianocore:edk2:201911:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:tianocore:edk2:202002:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:tianocore:edk2:202005:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:tianocore:edk2:202008:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:tianocore:edk2:202011:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:tianocore:edk2:202102:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:tianocore:edk2:202105:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.8
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://bugzilla.tianocore.org/show_bug.cgi?id=3499 Issue Tracking Permissions Required Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-38576
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38576
History
Created Old Value New Value Data Type Notes
2022-05-10 06:37:33 Added to TrackCVE
2022-12-06 05:35:54 2022-01-03T22:15Z 2022-01-03T22:15:09 CVE Published Date updated
2022-12-06 05:35:54 2022-01-13T16:21:04 CVE Modified Date updated
2022-12-06 05:35:54 Analyzed Vulnerability Status updated