CVE-2021-40327

CVSS V2 Low 2.6 CVSS V3 Medium 5.9
Description
Trusted Firmware-M (TF-M) 1.4.0, when Profile Small is used, has incorrect access control. NSPE can access a secure key (held by the Crypto service) based solely on knowledge of its key ID. For example, there is no authorization check associated with the relationship between a caller and a key owner.
Overview
  • CVE ID
  • CVE-2021-40327
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-01-13T16:15:07
  • Last Modified Date
  • 2022-01-25T14:35:47
Weakness Enumerations
CWE URL
CWE-862 http://cwe.mitre.org/data/definitions/862.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:trustedfirmware:trusted_firmware-m:1.4.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:H/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • HIGH
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 2.6
  • Severity
  • LOW
  • Exploitability Score
  • 4.9
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 5.9
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.2
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/ Patch Vendor Advisory
https://developer.arm.com/support/arm-security-updates Third Party Advisory
https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/profile_small_key_id_encoding_vulnerability.html Patch Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-40327
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40327
History
Created Old Value New Value Data Type Notes
2022-05-10 06:36:19 Added to TrackCVE
2022-12-06 06:22:59 2022-01-13T16:15Z 2022-01-13T16:15:07 CVE Published Date updated
2022-12-06 06:23:00 2022-01-25T14:35:47 CVE Modified Date updated
2022-12-06 06:23:00 Analyzed Vulnerability Status updated