[tor-bugs] #1938 [Tor Bridge]: UpdateBridgesFromAuthority dangerous

Tor Bug Tracker & Wiki torproject-admin at torproject.org
Mon Apr 2 15:07:09 UTC 2012


#1938: UpdateBridgesFromAuthority dangerous
------------------------+---------------------------------------------------
 Reporter:  arma        |          Owner:                    
     Type:  task        |         Status:  new               
 Priority:  major       |      Milestone:  Tor: 0.2.3.x-final
Component:  Tor Bridge  |        Version:                    
 Keywords:              |         Parent:                    
   Points:              |   Actualpoints:                    
------------------------+---------------------------------------------------

Comment(by rransom):

 Replying to [comment:8 nickm]:
 > > This should be a simple matter of turning on the ‘perform directory
 request anonymously’ flag when starting a directory-fetch operation from
 the bridge authority
 >
 > So, if we set that flag, and we can't get any circuits because we don't
 have any bridge descriptors yet, would we fall back to asking the bridges
 for their own descriptors, or would we just break?

 If you set that flag when launching requests aimed at the bridge
 authority, and Tor can't build circuits, those requests will fail.  That
 shouldn't interfere with asking the bridges for their own descriptors.

 If you set that flag when launching requests aimed at the bridges
 themselves, and Tor can't build circuits, those requests will fail, and
 Tor will thoroughly break.  So don't do that then.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/1938#comment:9>
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