CVE-2017-6143: F5 BIG-IP Advanced Firewall Manager

Medium severity, CVSS 5.4. EPSS: 0.4% chance of exploitation in the next 30 days.

X509 certificate verification was not correctly implemented in the IP Intelligence Subscription and IP Intelligence feed-list features, and thus the remote server's identity is not properly validated in F5 BIG-IP 12.0.0-12.1.2, 11.6.0-11.6.2, or 11.5.0-11.5.5.

Affected products

• F5 BIG-IP Advanced Firewall Manager: from 11.5.1, up to and including 11.5.5; from 11.6.1, up to and including 11.6.2; from 12.1.0, up to and including 12.1.2
• F5 BIG-IP Application Security Manager: from 11.5.1, up to and including 11.5.5; from 11.6.1, up to and including 11.6.2; after 12.1.0, up to and including 12.1.2

Published 2018-04-13. Last modified 2026-06-17.