[tor-bugs] #11935 [Firefox Patch Issues]: Strange fallback font behavior on Mac and Windows (was: TorBrowser Fonts Leaking....)

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#11935: Strange fallback font behavior on Mac and Windows
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     Reporter:  mt2014                |      Owner:  mikeperry
         Type:  defect                |     Status:  closed
     Priority:  normal                |  Milestone:
    Component:  Firefox Patch Issues  |    Version:
   Resolution:  invalid               |   Keywords:  tbb-fingerprinting
Actual Points:                        |  Parent ID:
       Points:                        |
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Changes (by mikeperry):

 * cc: mcs, brade (removed)
 * keywords:   => tbb-fingerprinting
 * priority:  critical => normal


Old description:

> why torbrowser still leaking fonts list?
> check here:
> stayinvisible.com

New description:

 On stayinvisible.com, for some reason our font patch is causing Windows
 and Mac builds to report that they have *all* the fonts installed, where
 as Linux the test properly stops detecting fonts after our limit is
 reached.

 This could be because something about TBB is simply causing the fallback
 fonts on Mac and Windows to be different than what they expect. Possible
 OS fingerprinting issue, or deeper bug?

 In either case, this is not ridiculously serious, but is worth
 investigating.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/11935#comment:9>
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