[tbb-bugs] #8725 [Applications/Tor Browser]: resource:// URIs leak information

Tor Bug Tracker & Wiki blackhole at torproject.org
Mon Jun 27 12:12:19 UTC 2016


#8725: resource:// URIs leak information
-------------------------------------------------+-------------------------
 Reporter:  holizz                               |          Owner:  tbb-
     Type:  defect                               |  team
 Priority:  Very High                            |         Status:
Component:  Applications/Tor Browser             |  needs_review
 Severity:  Major                                |      Milestone:
 Keywords:  tbb-fingerprinting, tbb-rebase-      |        Version:
  regression, tbb-testcase, tbb-firefox-patch,   |     Resolution:
  TorBrowserTeam201606R                          |  Actual Points:
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by gk):

 Replying to [comment:32 arthuredelstein]:
 > I also made a test to see if I could use redirects from content to load
 resource:// or chrome:// URIs into <script> elements:
 >
 > https://arthuredelstein.github.io/tordemos/resource-locale.html
 >
 > In unpatched Firefox or TorBrowser, the redirects fail and the following
 error is shown in the Browser Console:
 > {{{
 > Security Error: Content at https://arthuredelstein.github.io/tordemos
 /resource-locale.html may not load or link to
 jar:file:///Applications/Firefox.app/Contents/Resources/browser/omni.ja!/defaults/preferences
 /webide-prefs.js.
 > Security Error: Content at https://arthuredelstein.github.io/tordemos
 /resource-locale.html may not load or link to
 jar:file:///Applications/Firefox.app/Contents/Resources/browser/omni.ja!/chrome/browser/content/browser/browser.xul.
 > }}}

 Yes, I am not concerned with redirects breaking due to security errors. I
 have not tested this but not including cross-origin loads might help here.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8725#comment:34>
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