What is CVE-2021-23018?

CVE-2021-23018 is a high-severity vulnerability in F5 Nginx_controller, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.4/10. Published 2021-06-01.

How severe is CVE-2021-23018?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in F5 Nginx_controller

CVE-2021-23018

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.

EPSS: 0.005 (42.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

F5 Nginx_controller
N/a Nginx Controller — versions "3.x before 3.4.0"

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

f5sirt@f5.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-23018?: CVE-2021-23018 is a high-severity vulnerability in F5 Nginx_controller, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.4/10. Published 2021-06-01.
How severe is CVE-2021-23018?: High severity. CVSS v3 base score is 7.4 out of 10.