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Re: [tor-bugs] #21792 [Applications/Tor Browser]: Make sure MediaError.message does not aid to fingerprinting

#21792: Make sure MediaError.message does not aid to fingerprinting
-------------------------------------------------+-------------------------
 Reporter:  gk                                   |          Owner:
                                                 |  arthuredelstein
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff52-esr, tbb-fingerprinting,        |  Actual Points:
  tbb-7.0-must-alpha, TorBrowserTeam201704R      |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by cypherpunks):

 Replying to [comment:4 arthuredelstein]:
 > Checking for a MEDIA_ERR_DECODE or MEDIA_ERR_SRC_NOT_SUPPORTED error in
 principle might say something about the user's codecs.
 7.0a3 ends up with
 {{{
 [...] Error playing media:  MediaError { code: 4, message: "" }
 jwplayer.js:4:291
 }}}
 for any media, blocked by NoScript. So, no fingerprinting is available for
 higher than default security levels. `message` field looks like human-
 readable description of `code` field (not implemented by jwplayer yet?).

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21792#comment:10>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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