[tor-bugs] #18829 [Tor Browser]: Media Preview in Page Info may not meet TBB expectations for media handling

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#18829: Media Preview in Page Info may not meet TBB expectations for media handling
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     Reporter:  cypherpunks  |      Owner:  tbb-team
         Type:  task         |     Status:  new
     Priority:  Medium       |  Milestone:
    Component:  Tor Browser  |    Version:
     Severity:  Normal       |   Keywords:
Actual Points:               |  Parent ID:
       Points:               |   Reviewer:
      Sponsor:               |
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 Media Preview seems to allow what should be disabled via internal
 settings, and may not be under the same controls as other parts of the
 browser.

 Examples with gstreamer at #18782; an additional test was performed using
 the internal setting for disabling images (permissions.default.image) and
 they still showed up in Media preview. Not just in the Address section as
 URLs, but as actual displayed pictures. Any need for eliminating tracking
 pixels, for instance, might be subverted by this.

 The objective here is to check where Page Info/Media Preview's settings
 are, whether they are under the control of settings at all, and most
 importantly to find out if anything they do can contradict user-
 intended/expected levels of security.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18829>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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