Re: [tor-bugs] #9072 [Tor]: #9063 enables Guard discovery in about an hour by websites

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

#9072: #9063 enables Guard discovery in about an hour by websites
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    Reporter:  arma    |       Owner:                     
        Type:  defect  |      Status:  reopened           
    Priority:  major   |   Milestone:  Tor: 0.2.4.x-final 
   Component:  Tor     |     Version:  Tor: 0.2.4.13-alpha
  Resolution:          |    Keywords:                     
      Parent:          |      Points:                     
Actualpoints:          |  
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Comment(by andrea):

 Replying to [comment:11 nickm_mobile]:
 > Here are a few sketch oom-killer algorithms.  Let's try to find flaws in
 them and find something better.
 >
 > Algorithm 1.
 > 1) have a max number of allocated cells configured.
 > 2) when that number is reached, consider all circuits and kill those
 with the longest queues until we are at X% of the limit.

 Making sure I understand this correctly: this is better than the max queue
 length version because the maximum is controlled by the amount of memory
 available globally, so the queue fill has to be much, much larger to force
 a circuit kill needed for the potential exploit?

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9072#comment:29>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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