[tor-bugs] #30537 [Applications/Tor Browser]: WebGL fingerprint is different between Windows versions (and compared to non-Windows OSes)
Tor Bug Tracker & Wiki
blackhole at torproject.org
Tue May 21 14:42:52 UTC 2019
#30537: WebGL fingerprint is different between Windows versions (and compared to
non-Windows OSes)
-------------------------------------------------+-------------------------
Reporter: gk | Owner: tbb-
| team
Type: defect | Status: new
Priority: High | Milestone:
Component: Applications/Tor Browser | Version:
Severity: Normal | Resolution:
Keywords: tbb-fingerprinting, tbb- | Actual Points:
fingerprinting-os |
Parent ID: | Points:
Reviewer: | Sponsor:
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Comment (by cypherpunks):
So, that's due to Firefox doesn't recognize Win 10 renderer:
{{{
D3D11_COMPOSITING Blocklisted; failure code
BLOCKLIST_FEATURE_FAILURE_UNKNOWN_DEVICE_VENDOR
}}}
that changes the fingerprint and triggers:
{{{
Error: WebGL warning: Disallowing antialiased backbuffers due to
blacklisting. canvas.js:180:11
}}}
Forcing MSAA fixes that error, but doesn't change the fingerprint.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30537#comment:10>
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