[tbb-bugs] #18782 [Tor Browser]: media tab in Page Info can bypass NoScript

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Apr 12 07:19:25 UTC 2016

#18782: media tab in Page Info can bypass NoScript
 Reporter:  cypherpunks  |          Owner:  tbb-team
     Type:  defect       |         Status:  needs_information
 Priority:  Very High    |      Milestone:
Component:  Tor Browser  |        Version:
 Severity:  Critical     |     Resolution:
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
 Reviewer:               |        Sponsor:
Changes (by cypherpunks):

 * priority:  High => Very High
 * severity:  Major => Critical


 I just downloaded and ran a fresh copy of 5.5.4, en-us, hash
 ebc24ad69a27531dac62c25f939d4028c5494c1759137a3a841e9e32619a3c71, which I
 ran in both private and regular modes, and with security slider set to

 The only things I changed:

  - though it isn't recommended, I ran it as root because reasons;
 basically it is easier on my test system to do that and it was just to run
 it once for the purpose of this test
  - imported some bookmarks

 No addons at all were imported, installed, or adjusted. Visiting the
 website listed in the steps did indeed produce the bug. The IP-looking URL
 was there along with a host of other addresses, all instantly previewable,
 including the media player for that IP-based URL.

 If you are running an unmodified version of the browser, these should be
 your results as well. I have no idea why they aren't.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18782#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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