Bug ID 590578: False positive "URL error" alerts on URLs with GET parameters

Last Modified: Nov 07, 2022

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

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

Fixed In:
13.0.0, 12.1.2, 12.1.1 HF2, 12.1.1 HF1

Opened: May 01, 2016

Severity: 3-Major


False-positive URL Error alerts are sometimes generated on URLs with GET parameters.


Unwanted alerts in alert server.


Use of URLs with GET parameters.



Fix Information

Hash calculation is done on slightly different URL inputs, causing mismatch.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips