[tbb-bugs] #30541 [Applications/Tor Browser]: webgl readPixels FP entropy

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed May 29 11:59:05 UTC 2019

#30541: webgl readPixels FP entropy
 Reporter:  Thorin                               |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-fingerprinting,                  |  Actual Points:
  TorBrowserTeam201905R, GeorgKoppen201905       |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:

Comment (by cypherpunks):

 Replying to [comment:10 Thorin]:
 > ^^ just to be clear, the booleans of each are mismatched
 > - `webgl.disabled` (false = enabled, true=disabled)
 > - `webgl.enable-webgl2`(^^ the reverse)
 > I made sure to use the right combinations
 > **Update**: tested TB 32/64bit (8.5) and TBalpha (9.0a1) 32/64bit on
 Windows (all new vanilla setups), and **cannot** get `webgl2` to say it is
 supported. This is at default settings. I cannot replicate the issue.
 Use Windows 10 VM.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30541#comment:13>
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