Bug ID 1107041: The header ISTL-INFINITE-LOOP might get forwarded to origin server

Last Modified: Apr 28, 2025

Affected Product(s):
BIG-IP LTM(all modules)

Fixed In:
17.1.0

Opened: May 17, 2022

Severity: 3-Major

Symptoms

The internal header ISTL-INFINITE-LOOP is forwarded to the origin server.

Impact

Origin server receives internal header 'ISTL-INFINITE-LOOP header'.

Conditions

- Bot Defense profile is in use. - Interstitial endpoint is configured.

Workaround

None

Fix Information

The header ISTL-INFINITE-LOOP is removed from request before forwarding to the origin server.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips