CVE-2018-15319: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 1.9% chance of exploitation in the next 30 days.

On BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.1.1, or 12.1.0-12.1.3.6, malicious requests made to virtual servers with an HTTP profile can cause the TMM to restart. The issue is exposed with the non-default "normalize URI" configuration options used in iRules and/or BIG-IP LTM policies.

Affected products

  • F5 BIG-IP Access Policy Manager: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2
  • F5 BIG-IP Advanced Firewall Manager: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2
  • F5 BIG-IP Analytics: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2
  • F5 BIG-IP Application Acceleration Manager: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2
  • F5 BIG-IP Domain Name System: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2
  • F5 BIG-IP Edge Gateway: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2
  • F5 BIG-IP Fraud Protection Service: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2
  • F5 BIG-IP Global Traffic Manager: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2
  • F5 BIG-IP Link Controller: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2
  • F5 BIG-IP Local Traffic Manager: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2
  • F5 BIG-IP Policy Enforcement Manager: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2
  • F5 BIG-IP Protocol Security Module: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2
  • F5 BIG-IP Webaccelerator: from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.1.1.1; from 14.0.0, up to and including 14.0.0.2

Published 2018-10-31. Last modified 2026-06-17.