[tor-bugs] #5741 [Tor bundles/installation]: TBB proxy bypass: Some DNS requests not going through Tor

Tor Bug Tracker & Wiki torproject-admin at torproject.org
Wed May 2 21:23:45 UTC 2012


#5741: TBB proxy bypass: Some DNS requests not going through Tor
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 Reporter:  cypherpunks               |          Owner:  erinn
     Type:  defect                    |         Status:  new  
 Priority:  blocker                   |      Milestone:       
Component:  Tor bundles/installation  |        Version:       
 Keywords:                            |         Parent:       
   Points:                            |   Actualpoints:       
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Comment(by mikeperry):

 Back to the topic at hand: It looks like
 WebSocketChannel::ApplyForAdmission() is our culprit.

   // Websockets has a policy of 1 session at a time being allowed in the
   // CONNECTING state per server IP address (not hostname)

 What a joke. I'm really tempted to make this always return NS_OK.

 I did a quick audit for other sources of DNS leaks in the rest of the
 Firefox source tree and did not find any (unless there are hardcoded
 platform specific haxx, but it looks like everything runs through
 nsDNSService, which in turn relies on nsHostResolver).

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5741#comment:9>
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