[tbb-bugs] #17175 [Tor Browser]: Site is able to detect locale in some way

[Tor Bug Tracker & Wiki]

#17175: Site is able to detect locale in some way
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 Reporter:  cypherpunks  |          Owner:  tbb-team
     Type:  defect       |         Status:  new
 Priority:  critical     |      Milestone:
Component:  Tor Browser  |        Version:
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
  Sponsor:               |
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 Today I tried to search Google using localized Tor Browser. And I was VERY
 SURPRISED to see localized search results (though the page was in
 English). Some time after that I was far more surprised to see the page
 being redirected to the localized Google domain. I examined the headers
 using devtools and I haven't seen any signs of my locale in them. I
 examined the path, the exit node is not in my country. How could they
 detect it? This should be investigated and fixed.

 I use TBB 5.0.3.

 The settings are:
 extensions.torbutton.spoof_language;en-us, en
 extensions.torbutton.spoof_english;true
 extensions.torbutton.spoof_locale;en-US
 javascript.default_locale;en-US
 intl.accept_languages;en-US, en
 javascript.enabled;true
 noscript.global;false
 capability.policy.maonoscript.sites;about: about:addons about:blocked
 about:certerror about:config about:crashes about:home about:memory
 about:neterror about:plugins about:preferences about:privatebrowsing
 about:sessionrestore about:srcdoc about:support blob: chrome: mediasource:
 moz-safe-about: resource:

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17175>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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