[tor-bugs] #2709 [Tor Relay]: Relays can trick authorities into assigning the hsdir flag early

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#2709: Relays can trick authorities into assigning the hsdir flag early
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 Reporter:  Sebastian  |          Owner:                    
     Type:  defect     |         Status:  needs_review      
 Priority:  normal     |      Milestone:  Tor: 0.2.2.x-final
Component:  Tor Relay  |        Version:                    
 Keywords:             |         Parent:                    
   Points:             |   Actualpoints:                    
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Comment(by nickm):

 I wonder whether this ought to use MTBF or WFU instead of mere uptime.
 WFU seems a little better: we want a node that will "probably be up and
 reachable", not "one that _has_ been up a long time."

 But merging a fix here seems like a basically good idea.  The DoS attack
 in question would take a bit of doing to mount (it's not just a matter of
 "announce a high uptime" but also "predict the future location in the ring
 of a hidden service you don't like, get yourself put close to it in the
 ring during that time, and run a set of nodes that are at a bare minimum
 Running and Valid with proper identity keys."  Nonetheless, let's not
 leave the window open too long.

 This approach will require a change to section 3.3 of dir-spec.txt, which
 was apparently incorrect before.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2709#comment:2>
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