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[tor-bugs] #27580 [Applications/Tor Browser]: Tor Browser 8.0 lacks fingerprint hiding feature



#27580: Tor Browser 8.0 lacks fingerprint hiding feature
-------------------------------------+-------------------------------------
     Reporter:  aka                  |      Owner:  tbb-team
         Type:  defect               |     Status:  new
     Priority:  Medium               |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:
     Severity:  Critical             |  fingerprint,browser,original,notsecure
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:                       |
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 I recently surfed to https://panopticlick.eff.org/ and looked out for my
 Tor Browser Bundle fingerprint.

 I'm using TBB on my 64-bit Linux machine, so the result was '''Mozilla/5.0
 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0''' instead of
 some kind of "faked" fingerprint that shows that my machine would be a
 Microsoft Windows computer.

 I ran the same test in the previous version of TBB that I had before the
 update procedure gave me the 8.0 version, I didn't had the bug that my
 original browser fingerprint was leaked to the server I was connecting to.

 I downloaded TBB 8.0 also as a fresh instance from torproject.org with
 ''the same'' result.

 This breaks anonymity because a web server knows your real system &
 architecture. I don't know if this is only the case for the Linux variant
 of the browser because I don't have access to Mac OS or Windows machines
 right now. I furthermore only tested the 64 bit variant.

 I hope that this is not one of the new "features" that were included in
 version 8.0 ...

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27580>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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