Home/CVE/A flaw in the TETRA authentication procecure allows a MITM adversary that can predict the MS challenge RAND2 to set sess
CVE

CVE-2022-24400

A flaw in the TETRA authentication procecure allows a MITM adversary that can predict the MS challenge RAND2 to set sess

A flaw in the TETRA authentication procecure allows a MITM adversary that can predict the MS challenge RAND2 to set session key DCK to zero.

HIGH · CVSS 7.5 EPSS 0.00158
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-639Authorization Bypass Through User-Controlled Key
CWE-807Reliance on Untrusted Inputs in a Security Decision
▤

Affected Products & Versions

1
midnightblue tetra\all versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cert@ncsc.nl
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Oct 2023 · 10:15 AM
CVSS VectorCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://tetraburst.com/Vendor Advisory
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