[tor-bugs] #8864 [Tor]: Hidden service: Suddenly the service does not respond to new connections (INTRODUCE2 cell on intro circ with no corresponding rend_intro_point_t)

[Tor Bug Tracker & Wiki]

#8864: Hidden service: Suddenly the service does not respond to new connections
(INTRODUCE2 cell on intro circ with no corresponding rend_intro_point_t)
-------------------------+-------------------------------------------------
     Reporter:  reiam    |      Owner:
         Type:  defect   |     Status:  needs_review
     Priority:  normal   |  Milestone:  Tor: 0.2.7.x-final
    Component:  Tor      |    Version:  Tor: 0.2.7
   Resolution:           |   Keywords:  tor-hs, 023-backport, 025-triaged,
Actual Points:           |  SponsorR, 027-triaged-1-in
       Points:  unclear  |  Parent ID:
-------------------------+-------------------------------------------------

Comment (by arma):

 Replying to [comment:36 dgoulet]:
 > The IP doesn't know that this circuit is a specific HS with xyz.onion so
 at best it would know "one of the HS in the network" has maybe (could be a
 restart) a new consensus.

 (An intro point can know that it's the intro point for a given hidden
 service, if it has a list of hidden services, fetches their descriptors,
 and sees if the intro point key is in any of them. This is a more active
 adversary but still a reasonable one.)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8864#comment:37>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online