[tor-bugs] #26146 [Applications/Tor Browser]: Setting `general.useragent.override` does not spoof the platform part anymore in ESR 60 which is confusing

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Sep 13 01:01:44 UTC 2018


#26146: Setting `general.useragent.override` does not spoof the platform part
anymore in ESR 60 which is confusing
-------------------------------------------------+-------------------------
 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_information
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff60-esr, tbb-fingerprinting-os,     |  Actual Points:
  tbb-8.0-issues                                 |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by cypherpunks3):

 Replying to [comment:49 fufufufufufufu]:
 > Replying to [comment:47 arthuredelstein]:
 >> Here is a pure CSS demo for detecting the OS:
 >> https://arthuredelstein.github.io/tordemos/os-detection-font-css.html
 > I have a few extra addons in my Tor Browser (8.0) install, but this
 doesn't work for me even with all of them disabled and JS enabled. It
 simply displays all 3 OS names simultaneously. It makes no network
 requests beyond the initial page loading either.

 This trick is defeated by disabling external fonts, for example enabling
 `noscript.forbidFonts` in NoScript 5, which is something Tor Browser
 should always have done, to hell with the broken sites and their users.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26146#comment:51>
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