[tor-bugs] #25609 [Core Tor/Tor]: Investigate Tor client retry behavior on failing onions

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#25609: Investigate Tor client retry behavior on failing onions
-------------------------+-------------------------------------------------
     Reporter:  asn      |      Owner:  (none)
         Type:  defect   |     Status:  new
     Priority:  Medium   |  Milestone:  Tor: 0.3.4.x-final
    Component:  Core     |    Version:
  Tor/Tor                |   Keywords:  guard-discovery,
     Severity:  Normal   |  TorBrowserTeam201803
Actual Points:           |  Parent ID:  #20212
       Points:  2        |   Reviewer:
      Sponsor:           |
-------------------------+-------------------------------------------------
 An attacker can cause a Tor client to create many circuits by continuously
 serving a broken/failing onion over and over again.

 We should investigate how many circuits a Tor client is willing to setup
 for an onion with a non-existent descriptor, or an onion that is unwilling
 to rendezvous, and see if this is a security issue.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25609>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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