[tor-bugs] #7139 [Tor]: Tor involuntarily sets TLS session tickets

Tor Bug Tracker & Wiki torproject-admin at torproject.org
Thu Oct 18 13:16:11 UTC 2012


#7139: Tor involuntarily sets TLS session tickets
-----------------------------------+----------------------------------------
    Reporter:  nextgens            |        Type:  defect                        
      Status:  needs_review        |    Priority:  major                         
   Milestone:  Tor: 0.2.2.x-final  |   Component:  Tor                           
     Version:                      |    Keywords:  tor-relay ssl tls security pfs
      Parent:                      |      Points:                                
Actualpoints:                      |  
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Comment(by nickm):

 Hm.  So, I buy the "more attack surface than necessary" argument as a
 reason to put it in 0.2.3 and later, but I don't think the swapping
 argument necessarily holds water.

 If we're worried about the key material getting used to encrypt tickets
 getting swapped out to disk, we also need to worry about the session key
 material getting swapped out, surely.  If you're swapping and your swap
 isn't encrypted, I don't think you get PFS guarantees.

 I could be missing something crucial there--am I?

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7139#comment:7>
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