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

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed May 29 12:34:15 UTC 2019

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

 * status:  needs_review => closed
 * resolution:   => fixed


 Replying to [comment:12 acat]:
 > Patch looks good to me too, tested on Linux. One small note: you could
 use `nsContentUtils::ResistFingerprinting(aCallerType)`, which already has
 the `aCallerType != CallerType::System` check.

 Thanks, that's a good suggestions. I've pushed `bug_30541_v3`
 to my public repo. And merged/cherry-picked the result to `tor-
 browser-60.7.0esr-9.0-1` (commit e462f9d9eb505b5e724ec64a52280c70210cf5eb)
 and `tor-browser-60.7.0esr-8.5-1` (commit

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30541#comment:14>
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