CVE-2017-6163: F5 BIG-IP Access Policy Manager

Medium severity, CVSS 5.9. EPSS: 1.7% chance of exploitation in the next 30 days.

In F5 BIG-IP LTM, AAM, AFM, APM, ASM, Link Controller, PEM, PSM software version 12.0.0 to 12.1.2, 11.6.0 to 11.6.1, 11.4.0 to 11.5.4, when a virtual server uses the standard configuration of HTTP/2 or SPDY profile with Client SSL profile, and the client initiates a number of concurrent streams beyond the advertised limit can cause a disruption of service. Remote client initiating stream beyond the advertised limit can cause a disruption of service. The Traffic Management Microkernel (TMM) data plane is exposed to this issue; the control plane is not exposed.

Affected products

  • F5 BIG-IP Access Policy Manager: from 11.5.0, up to and including 11.5.4; version 11.6.0 only; version 11.6.1 only; version 12.0.0 only; version 12.1.0 only; version 12.1.1 only; …
  • F5 BIG-IP Advanced Firewall Manager: from 11.4.0, up to and including 11.5.4; version 11.6.0 only; version 11.6.1 only; version 12.0.0 only; version 12.1.0 only; version 12.1.1 only; …
  • F5 BIG-IP Application Acceleration Manager: from 11.4.0, up to and including 11.5.4; version 11.6.0 only; version 11.6.1 only; version 12.0.0 only; version 12.1.0 only; version 12.1.1 only; …
  • F5 BIG-IP Application Security Manager: from 11.5.0, up to and including 11.5.4; version 11.6.0 only; version 11.6.1 only; version 12.0.0 only; version 12.1.0 only; version 12.1.1 only; …
  • F5 BIG-IP Link Controller: from 11.5.0, up to and including 11.5.4; version 11.6.0 only; version 11.6.1 only; version 12.0.0 only; version 12.1.0 only; version 12.1.1 only; …
  • F5 BIG-IP Local Traffic Manager: from 11.4.0, up to and including 11.5.3; version 11.6.0 only; version 11.6.1 only; version 12.0.0 only; version 12.1.0 only; version 12.1.1 only; …
  • F5 BIG-IP Policy Enforcement Manager: from 11.5.0, up to and including 11.5.4; version 11.6.0 only; version 11.6.1 only; version 12.0.0 only; version 12.1.0 only; version 12.1.1 only; …
  • F5 BIG-IP Protocol Security Module: after 11.4.0, up to and including 11.5.4; version 11.6.0 only; version 11.6.1 only; version 12.0.0 only; version 12.1.0 only; version 12.1.1 only; …

Published 2017-10-27. Last modified 2026-06-17.