[tahoe-dev] [tahoe-lafs] #995: It's way too easy to give away write directory caps

tahoe-lafs trac at allmydata.org
Fri Mar 12 17:49:28 PST 2010


#995: It's way too easy to give away write directory caps
-------------------------------------------+--------------------------------
 Reporter:  jsgf                           |           Owner:  nobody   
     Type:  defect                         |          Status:  new      
 Priority:  major                          |       Milestone:  undecided
Component:  unknown                        |         Version:  1.6.0    
 Keywords:  wui usability confidentiality  |   Launchpad_bug:           
-------------------------------------------+--------------------------------
 The WUI makes it too easy to accidentally give away the write directory
 caps for a directory.  The most obvious thing to do - cut'n'paste the URL
 - is the worst thing to do.  If you want to give a RO directory cap to
 someone else, you need to make a fairly explicit extra step to do so.

 I don't know how to address this, but here are some thoughts:

 1. Add an obvious "share this directory" button which pops up a pre-
 selected cuttable RO URL, in order to try and make the right thing the
 most simple and obvious.

 2. Use cookies to maintain some per-session state, and use that state to
 mangle the cap in the URL, to prevent it from being accepted by any other
 web gateway/WUI session.  Unfortunately without some strong crypto in the
 browser this will not prevent the URL from being accidentally shared
 unless the user notices it has been mangled before sending it.

 3. Erm, something else?

-- 
Ticket URL: <http://allmydata.org/trac/tahoe/ticket/995>
tahoe-lafs <http://allmydata.org>
secure decentralized file storage grid


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