1249645 - Firefox keeps listening on UDP port 50625 when WebIDE is closed

Status: NEW

(DevTools :: about:debugging, defect, P3)

Description

[onitake]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:44.0) Gecko/20100101 Firefox/44.0 Iceweasel/44.0
Build ID: 20160127021244

Steps to reproduce:

Open the WebIDE window from within Firefox, then close it.


Actual results:

Before opening WebIDE, Firefox does not listen on any ports, neither TCP nor UDP.
After opening it, a listener on UDP port 50625 is installed, presumably for device discovery or remote debugging.

This listener does not go away when closing the window.


Expected results:

The listener should not be enabled without the user's knowledge, as it may be a security risk. I did not find any information on what it used for exactly.

There should be an option to disable the listener completely.

At the very least, it should be closed as soon as the user closes the WebIDE GUI. This is not the case.

Comment 1

[J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)]

It listens for device pings, to discover nearby devices for debugging.  Not really a security risk, but I agree it would be better to clean it up.

Comment 2

[Julian Descottes [:jdescottes]]

About:debugging bug triage. Filter on TRIAGE-JD201705

Temporarily setting P3 to bugs migrated from webide to cleanup the triage for about:debugging.