[tbb-bugs] #21685 [Applications/Tor Browser]: Remote New Tab pages have access to internal browser APIs in Firefox 52

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#21685: Remote New Tab pages have access to internal browser APIs in Firefox 52
-------------------------------------+-------------------------------------
     Reporter:  gk                   |      Owner:  tbb-team
         Type:  defect               |     Status:  new
     Priority:  Medium               |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:  ff52-esr, tbb-7.0-must,
     Severity:  Normal               |  TorBrowserTeam201703
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:  Sponsor4             |
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 It is possible that remote New Tab pages have access to internal browser
 APIs in Firefox 52.

 PreviewProvider Messaging API
 (https://bugzilla.mozilla.org/show_bug.cgi?id=1239119),
 NewTabPrefsProvider Messaging API
 (https://bugzilla.mozilla.org/show_bug.cgi?id=1239118), and
 PlacesProvider Messaging API
 (https://bugzilla.mozilla.org/show_bug.cgi?id=1239116)

 are relevant. The content signature service
 (https://bugzilla.mozilla.org/show_bug.cgi?id=1252882) is important in
 this picture, too.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21685>
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