[tor-bugs] #11055 [Firefox Patch Issues]: Investigate potential DNS leak on Windows when using SSPI

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Mar 18 14:48:14 UTC 2014


#11055: Investigate potential DNS leak on Windows when using SSPI
--------------------------------------+-----------------------
     Reporter:  gk                    |      Owner:  mikeperry
         Type:  task                  |     Status:  new
     Priority:  normal                |  Milestone:
    Component:  Firefox Patch Issues  |    Version:
   Resolution:                        |   Keywords:
Actual Points:                        |  Parent ID:
       Points:                        |
--------------------------------------+-----------------------
Changes (by gk):

 * priority:  major => normal


Comment:

 Some days ago on #necko:

 Q: Well, the code on https://mxr.mozilla.org/mozilla-
 esr24/source/extensions/auth/nsAuthSSPI.cpp#122 seems to bypass proxy
 settings. Is that correct?
 A: SOCKS is supposed to do that, yes.
 Q: But what if I have remote DNS resolution configured?
 A: Different code.
 Q: What do you mean?

 So, on the Mozilla side they are not worried which may mean (which is very
 likely) I overlooked something while looking at it superficially. Anyway,
 might still be worth investigating although with a lower priority as our
 current patches block all direct DNS requests if a proxy and remote DNS
 resolution is configured.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/11055#comment:1>
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