[tor-bugs] #32733 [Applications/Tor Browser]: "Find" feature leaks information between Tor Browser and regular Firefox on macOS 10.15.1

[Tor Bug Tracker & Wiki]

#32733: "Find" feature leaks information between Tor Browser and regular Firefox on
macOS 10.15.1
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 Reporter:  mSUIcXNPzcq3idq  |          Owner:  tbb-team
     Type:  defect           |         Status:  new
 Priority:  Medium           |      Component:  Applications/Tor Browser
  Version:                   |       Severity:  Normal
 Keywords:  tbb-9.0-issues   |  Actual Points:
Parent ID:                   |         Points:
 Reviewer:                   |        Sponsor:
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 On my Macbook Pro (running Catalina 10.15.1) I use Firefox (currently v70)
 as my regular browser, and Tor Browser 9.0.2.

 If I use the "find" feature in Tor Browser (i.e. Cmd-F) and look for some
 text in a page I am browsing privately via Tor, then using the same
 feature in normal Firefox is prefilled with the text I just searched for -
 this seems like a potential leak of private (meta-?)data

 Steps to reproduce:

  * Install Firefox on a macOS 10.15.1 system
  * Install Tor Browser Bundle 9.0.2
  * Open Firefox and load "www.google.com"
  * Open Tor Browser and load "www.bing.com"
  * In Tor Browser, press Cmd-F and search for "private text"
  * Change application to Firefox and press Cmd-F
    * You will see that the "search text" field has been filled in with the
 text you just searched for in Tor Browser during an "anonymous" browsing
 session

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32733>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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