Home/CVE/Intra-cluster communication does not use TLS. The services within the NGINX Controller 3.x before 3.4.0 namespace are us
CVE

CVE-2021-23018

Intra-cluster communication does not use TLS. The services within the NGINX Controller 3.x before 3.4.0 namespace are us

Intra-cluster communication does not use TLS. The services within the NGINX Controller 3.x before 3.4.0 namespace are using cleartext protocols inside the cluster.

HIGH · CVSS 7.4 EPSS 0.0022
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-319Cleartext Transmission of Sensitive Information
CWE-319Cleartext Transmission of Sensitive Information
▤

Affected Products & Versions

1
f5 nginx controller>= 3.0.0 and <= 3.4.0
▣

Scoring & Timeline

7.4
HIGH · CVSS v3.1 · f5sirt@f5.com
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 NVD01 Jun 2021 · 12:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://support.f5.com/csp/article/K97002210Vendor Advisory
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