Bug ID 1366153: "Illegal repeated header violation" is added with blocking enabled, after upgrading to v16+ from earlier versions

Last Modified: Dec 05, 2024

Affected Product(s):
BIG-IP ASM, Install/Upgrade(all modules)

Known Affected Versions:
17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4

Fixed In:
17.1.2

Opened: Oct 04, 2023

Severity: 3-Major

Symptoms

"Illegal repeated header violation" is added with blocking enabled, after upgrading to v16+ from earlier versions.

Impact

False positives after upgrading.

Conditions

Upgrading from pre-v16 to post-v16.

Workaround

After upgrading, review violation reports and disable "Illegal repeated header violation" as needed.

Fix Information

Learn/Alarm/Blocking of "Illegal repeated header violation" are set all disabled after upgrading from versions where the violation did not exist.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips