[tor-bugs] #13155 [Tor]: I can use an extend cell to remotely determine whether two relays have a connection open

[Tor Bug Tracker & Wiki]

#13155: I can use an extend cell to remotely determine whether two relays have a
connection open
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     Reporter:  arma    |      Owner:
         Type:  defect  |     Status:  new
     Priority:  normal  |  Milestone:  Tor: 0.2.???
    Component:  Tor     |    Version:
   Resolution:          |   Keywords:
Actual Points:          |  Parent ID:
       Points:          |
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Comment (by cypherpunks):

 Information leaked by this and similar bugs was used to ((http://ercim-
 news.ercim.eu/en90/special/torscan-deanonymizing-connections-using-
 topology-leaks tracing long-lived connections))
 (((https://eprint.iacr.org/2012/432.pdf pdf))).
 It's #6799 bug related.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13155#comment:4>
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