[tor-bugs] #26609 [Applications/Tor Browser]: investigate whether the -moz-windows-accent-color-in-titlebar media query adds a fingerprinting vector

[Tor Bug Tracker & Wiki]

#26609: investigate whether the -moz-windows-accent-color-in-titlebar media query
adds a fingerprinting vector
-------------------------------------------------+-------------------------
 Reporter:  mcs                                  |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-fingerprinting, ff60-esr,        |  Actual Points:
  TorBrowserTeam201808R                          |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------
Changes (by arthuredelstein):

 * status:  new => needs_review
 * keywords:  tbb-fingerprinting, ff60-esr, TorBrowserTeam201808 => tbb-
     fingerprinting, ff60-esr, TorBrowserTeam201808R


Comment:

 This media query is considered a System Metric by Firefox:

 https://dxr.mozilla.org/mozilla-
 esr60/rev/dd52b41d2b775e5c7261ce52795268b7670635fc/layout/style/nsMediaFeatures.cpp#929

 and as such it is already blocked by privacy.resistFingerprinting:
 https://dxr.mozilla.org/mozilla-
 esr60/rev/dd52b41d2b775e5c7261ce52795268b7670635fc/layout/style/nsMediaFeatures.cpp#442

 So I believe this media query is already taken care of.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26609#comment:6>
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