[tor-bugs] #2874 [Tor bundles/installation]: Block or mark Components.interfaces configurable

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#2874: Block or mark Components.interfaces configurable
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 Reporter:  mikeperry                 |          Owner:  mikeperry
     Type:  defect                    |         Status:  new      
 Priority:  normal                    |      Milestone:           
Component:  Tor bundles/installation  |        Version:           
 Keywords:                            |         Parent:  #2871    
   Points:                            |   Actualpoints:           
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 Components.interfaces can be used to fingerprint browser user agent down
 to OS and minor version. This might not be a lot of data for
 fingerprinting (depending on how well we keep users upgraded), but it
 certainly is a concern for targeting exploit payloads against a particular
 OS and version combo.

 Here's an (outdated) PoC: http://pseudo-flaw.net/tor/torbutton
 /fingerprint-firefox.html

 Here's the Firefox bug for this:
 https://bugzilla.mozilla.org/show_bug.cgi?id=429070

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2874>
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