Bug ID 763001: Web-socket enforcement might lead to a false negative

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,, 14.0.0,,,,,, 14.0.1, 14.1.0,,,,

Fixed In:
15.0.0,,, 13.1.3

Opened: Mar 21, 2019
Severity: 3-Major
Related AskF5 Article:


A request that should be blocked will be passed to server.


Bad requests may be passed to the server


Parse parameters flag in json profile is enabled. Requests are sent in json websocket.


Disable parse parameters flag in json profile

Fix Information

Web-socket enforcement now filters requests as expected.

Behavior Change