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

Tor Bug Tracker & Wiki blackhole at torproject.org
Mon May 20 18:56:13 UTC 2019

#30541: webgl readPixels FP entropy
 Reporter:  Thorin                   |          Owner:  tbb-team
     Type:  defect                   |         Status:  new
 Priority:  Medium                   |      Component:  Applications/Tor
                                     |  Browser
  Version:                           |       Severity:  Normal
 Keywords:  tbb-fingerprinting,      |  Actual Points:
  tbb-fingerprinting-os              |
Parent ID:                           |         Points:
 Reviewer:                           |        Sponsor:
 **readPixels** is not covered by RFP (see
 https://bugzilla.mozilla.org/show_bug.cgi?id=1428034 ) and using my tests
 [1], on windows I get entropy. Not sure if unique or just OS.

 - Windows 7 32bit
 - Windows 7 64bit
 - Windows10 64bit

 It seems to be consistent on Linux, and Mac i have no idea: here's some
 - Mint Cinnamon 32/64bit `not supported`
 - Ubuntu GNOME
 - Debian GNOME
 - Mac 10.14

 So besides windows OS entropy, theres at least two buckets for Linux?

 gk said
 > Interestingly, I get your macOS one on one of my Linux boxes.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30541>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

More information about the tbb-bugs mailing list