[tor-bugs] #16824 [Tor]: coexistence of client and relay processing on same thread poses traffic confirmation risk

Mon Nov 9 01:34:50 UTC 2015

#16824: coexistence of client and relay processing on same thread poses traffic
confirmation risk
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 Reporter:  starlight                    |          Owner:
     Type:  defect                       |         Status:  new
 Priority:  High                         |      Milestone:  Tor:
Component:  Tor                          |  0.2.8.x-final
 Severity:  Normal                       |        Version:  Tor: 0.2.6.10
 Keywords:  PostFreeze027, 027-backport  |     Resolution:
Parent ID:                               |  Actual Points:
  Sponsor:                               |         Points:
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Comment (by starlight):

 What Guard discovery attacks exist that succeed where the adversary does
 not have access to the path between the client and the Guard?  In most
 cases the 4-hop client relay would reside inside a private network (or
 even in the TCP stack of a single server) where accessing client-guard
 traffic is far more difficult than on the open Internet.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16824#comment:15>
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