[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):

 Reviewing the patch:

   * I want to clarify the changes file to specify the attack a little more
 accurately.
   * I want to avoid a the possibility of negative uptimes.

 I've pushed a tweak to a hsdir_assignment branch in my public repository.

 Another security measure: perhaps the authorities should simply not allow
 more than N identities per IP per time-unit.  If a router is frequently
 changing its identity, it's probably up to no good.  Worth writing a
 proposal there.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2709#comment:3>
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