[tor-bugs] #14917 [Tor]: Client's choice of rend point can leak info about hidden service's guard relay

[Tor Bug Tracker & Wiki]

#14917: Client's choice of rend point can leak info about hidden service's guard
relay
-------------------------+-------------------------------------------------
     Reporter:  arma     |      Owner:
         Type:  defect   |     Status:  assigned
     Priority:  normal   |  Milestone:  Tor: 0.2.7.x-final
    Component:  Tor      |    Version:  Tor: 0.2.7
   Resolution:           |   Keywords:  SponsorR, tor-hs, 027-triaged-1-in,
Actual Points:           |  SponsorU
       Points:  medium   |  Parent ID:
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Comment (by arma):

 Trigger a warning and fail the circuit? Or trigger a warning and do the
 four hop circuit as described above? I assume you mean the former. But
 isn't having only one EntryNode the safest, best recommendation we can
 have for when you're setting EntryNodes? Especially in the scenario where
 you run that relay or know its operator.

 I worry that we're warning people away from what might actually be the
 best recommended behavior for some of them.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/14917#comment:9>
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