[tor-bugs] #33541 [Applications/Tor Browser]: fingerprinting: zoom.min/maxPercent should be fixed at 100

Fri Mar 6 09:13:49 UTC 2020

#33541: fingerprinting: zoom.min/maxPercent should be fixed at 100
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 Reporter:  cypherpunks  |          Owner:  tbb-team
     Type:  defect       |         Status:  new
 Priority:  High         |      Component:  Applications/Tor Browser
  Version:               |       Severity:  Normal
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
 Reviewer:               |        Sponsor:
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 Pressing Ctrl +/- results in detected window resolution different from
 1000x1000 (test with
 https://ghacksuserjs.github.io/TorZillaPrint/TorZillaPrint.html#screen)
 which is a way to easier fingerprinting.

 To avoid this `zoom.minPercent` and `zoom.maxPercent` must be set to 100.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33541>
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