[tor-bugs] #2872 [Tor Browser]: Limit the fonts available in TorBrowser

[Tor Bug Tracker & Wiki]

#2872: Limit the fonts available in TorBrowser
----------------------------+-----------------------------------------------
    Reporter:  mikeperry    |       Owner:  mikeperry                                      
        Type:  enhancement  |      Status:  reopened                                       
    Priority:  major        |   Milestone:  TorBrowserBundle 2.3.x-stable                  
   Component:  Tor Browser  |     Version:                                                 
  Resolution:               |    Keywords:  backport-to-mozilla, MikePerryIteration20111225
      Parent:  #2871        |      Points:  8                                              
Actualpoints:  10           |  
----------------------------+-----------------------------------------------
Changes (by cypherpunks):

  * status:  closed => reopened
  * resolution:  fixed =>


Comment:

 Does not work for me with the latest TBB. On three different test systems
 (Linux and two different Windows versions) there are three different sets
 of fonts.

 How to reproduce:
 Enable javascript. Go to ip-check.info start the test once with TBB on
 Linux and once with TBB on Windows.

 Result:
 Windows 1: about 180 fonts
 Windows 2: about 40 fonts
 Linux: about 20 fonts
 (they can not only see the number, but the exact list)

 Expected result:
 Windows 1 fonts = Windows 2 fonts = Linux fonts

 Suggested solution:
 Reply with only 3 fonts.
 monospace, serif, times new roman

 Who done implemented already:
 I am not a big fan of JonDo, but in this case they done it better. Go to
 https://anonymous-proxy-servers.net/en/jondofox.html and download JonDoFox
 for free. You can test it without proxy. Right click on JondoButton (like
 TorButton) and choose no proxy. Then go to ip-check.info - only 3 fonts.
 Perhaps look at their source code for a tip.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2872#comment:21>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online