[tor-bugs] #12682 [Firefox Patch Issues]: Tor Browser's HTML5 canvas fingerprinting dialogue could use a "Revoke" button

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed Jul 23 01:45:45 UTC 2014


#12682: Tor Browser's HTML5 canvas fingerprinting dialogue could use a "Revoke"
button
--------------------------------------------+---------------------------
 Reporter:  isis                            |          Owner:  mikeperry
     Type:  enhancement                     |         Status:  new
 Priority:  normal                          |      Milestone:
Component:  Firefox Patch Issues            |        Version:
 Keywords:  tbb-usability,tbb-linkabillity  |  Actual Points:
Parent ID:                                  |         Points:
--------------------------------------------+---------------------------
 Currently when a website tries to access an HTML5 canvas, Tor Browser
 displays a little XUL dialogue near the URL bar which asks if you would
 like to give permission for that site to access the canvas. The options
 are "Allow in the Future", "Never Allow", and "Not Now". To see an
 example, just go [https://github.com/isislovecruft look at someone's
 Github profile] or [https://pad.riseup.net/p/Lb57JrCmVzBt view one of
 Riseup's Etherpads].

 The problem is that after users pick one of these choices, the permission
 is stored via the `NSIPermissionsManager` and is only accessible to an end
 user by going to `about:permissions`. There really should be an easier way
 to access this, and at the very least, users should be able to easily
 revoke permissions later.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12682>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online


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