Bug ID 556357: iRule URLCAT query for URL longer than 256 characters causes crash

Last Modified: Sep 13, 2023

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

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.1.0, 12.0.0 HF3

Opened: Nov 05, 2015

Severity: 3-Major


If an URLCAT query originates from iRule and requires a cloud lookup, it may result in a crash.


TMM may crash.


iRule URLCAT for very long (greater than 256 characters) URL and the URL is not present in local databases.


Limit the string length of URL in iRule to a maximum of 256 characters.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips