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Re: [tor-bugs] #16669 [Tor Check]: check.torproject.org should have WebRTC IPv4 and IPv6 address leak detection to protect Orbot VPN users

#16669: check.torproject.org should have WebRTC IPv4 and IPv6 address leak
detection to protect Orbot VPN users
---------------------------+---------------------
     Reporter:  diafygi    |      Owner:  arlolra
         Type:  defect     |     Status:  new
     Priority:  major      |  Milestone:
    Component:  Tor Check  |    Version:
   Resolution:             |   Keywords:
Actual Points:             |  Parent ID:
       Points:             |
---------------------------+---------------------
Changes (by arlolra):

 * cc: amoghbl1, n8fr8 (added)


Comment:

 Thanks for the research and suggestion.

 Orweb is being replaced by Orfox, a port of Tor Browser for Android. If
 it's susceptible to this leak, that would indeed be pretty major bug. I've
 cc'd the developers to verify that it is not the case.

 > However, the Android's VPN feature doesn't hide the IP addresses from
 WebRTC's STUN requests. This means that Orbot users will still leak their
 IP addresses when using the VPN feature and using a browser with WebRTC
 capabilities.

 I think this is analogous to the desktop situation where the
 recommendation is to use Tor Browser, full stop. It goes to great pains to
 ensure a safe browsing environment, only one of which is preventing proxy
 leaks. While a warning for this particular issue might be nice, a positive
 result on check.tpo should never be take as an indication that all is
 well.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16669#comment:3>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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