Bug ID 653014: Apply Policy failure if an custom Blocking Page is configured with an underscore in the header name

Last Modified: Sep 13, 2023

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

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3

Fixed In:
13.1.0, 13.0.1, 12.1.3

Opened: Mar 23, 2017

Severity: 2-Critical

Symptoms

An issue was introduced when dealing with custom Blocking pages containing an HTTP Header that has an underscore in the name.

Impact

Set Active fails

Conditions

A custom Blocking page is defined containing an HTTP Header that has an underscore in the name.

Workaround

Use hyphens instead of underscores in the header name.

Fix Information

Underscores in HTTP Headers in Blocking Response pages are handled correctly.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips