[tor-bugs] #15646 [Tor Browser]: KeyboardEvent may allow fingerprinting of keyboard layout

[Tor Bug Tracker & Wiki]

#15646: KeyboardEvent may allow fingerprinting of keyboard layout
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     Reporter:           |      Owner:  arthuredelstein
  cypherpunks            |     Status:  needs_revision
         Type:  defect   |  Milestone:
     Priority:  major    |    Version:
    Component:  Tor      |   Keywords:  ff38-esr, tbb-fingerprinting, tbb-5
  Browser                |  .0a-highrisk, TorBrowserTeam201508,
   Resolution:           |  GeorgKoppen201507R
Actual Points:           |  Parent ID:
       Points:           |
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Comment (by mikeperry):

 Replying to [comment:38 mikeperry]:
 > Replying to [comment:37 arthuredelstein]:
 > > Replying to [comment:34 mikeperry]:
 > > > When using google docs with 5.0a4, I am unable to use hotkeys to
 switch tabs. I suspect this patch may be at fault?
 > > >
 > > > I don't recall having this issue with 5.0a3...
 > >
 > > What key combination and OS did you use here?
 >
 > Gnome on Linux. Alt+<num> while in the text edit window of a google doc.
 This just causes <num> to appear instead of switching tabs.

 I just double-checked, and the alt+<num> breakage was absent in 5.0a3, but
 backspace was still broken in 5.0a3. Both keys work fine in 4.5.3. For
 some reason, backspace and alt+<num> are only broken from within Google
 Docs. All other web editors/pads I've tested do not have any issues.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15646#comment:39>
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