Bug ID 648053: Rewrite plugin may crash on some JavaScript files

Last Modified: May 14, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP APM(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:
13.1.0, 12.1.3

Opened: Feb 28, 2017
Severity: 3-Major
Related AskF5 Article:


Rewrite plugin may crash parsing JavaScript files in US ASCII encoding.


Rewrite plugin may crash parsing this file. No response is sent to client.


JavaScript file in US ASCII encoding (not in UTF-8).


It is possible to change/add 'charset' parameter in response header 'Content-type' to 'UTF-8' by iRule.

Fix Information

Now Portal Access rewrite correctly handles JavaScript data if the web page uses US ASCII encoding.

Behavior Change