[tor-bugs] #34008 [Applications/Tor Browser]: User may choose to leave on page after using New Identity

Mon Apr 27 06:51:51 UTC 2020

#34008: User may choose to leave on page after using New Identity
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 Reporter:  cypherpunks               |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Very High                 |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Critical                  |     Resolution:
 Keywords:                            |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by Thorin):

 I don't know about if the above scenario will cause a "leak" or potential
 ID'ing, but since  Firefox is not closed, I doubt any sanitizing is done.
 `dom.disable_beforeunload` = `true` will disable "Confirm you want to
 leave" dialogs. It is default `false` in Firefox and Tor Browser.

 [1] https://developer.mozilla.org/en-
 US/docs/Web/API/Window/beforeunload_event

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/34008#comment:2>
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