Re: [tor-bugs] #2683 [Tor Directory Authority]: authority received unparseable routerstatus entry

["Tor Bug Tracker & Wiki" <torproject-admin@xxxxxxxxxxxxxx>]

#2683: authority received unparseable routerstatus entry
-------------------------------------+--------------------------------------
 Reporter:  arma                     |          Owner:     
     Type:  defect                   |         Status:  new
 Priority:  critical                 |      Milestone:     
Component:  Tor Directory Authority  |        Version:     
 Keywords:                           |         Parent:     
   Points:                           |   Actualpoints:     
-------------------------------------+--------------------------------------
Changes (by rransom):

  * priority:  normal => critical


Comment:

 Replying to [comment:4 arma]:
 > Are we really calling strlen on an arbitrary vote blob we got from the
 network?

 Yes, even though that's the wrong way to determine the length of that
 particular blob.  And worse, we're calling `strlen` on a blob some fuzzer
 handed us ''after we parse it''.

 Unfortunately, I don't see a nice way to check the signature before we
 feed a potential fuzz-bomb through our parser.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2683#comment:5>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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