#26609 closed defect (fixed)

investigate whether the -moz-windows-accent-color-in-titlebar media query adds a fingerprinting vector

Reported by: mcs Owned by: tbb-team
Priority: High Milestone:
Component: Applications/Tor Browser Version:
Severity: Normal Keywords: tbb-fingerprinting, ff60-esr, TorBrowserTeam201808R
Cc: arthuredelstein Actual Points:
Parent ID: Points:
Reviewer: Sponsor:

Description

As of Firefox 56, support was added for a -moz-windows-accent-color-in-titlebar media query. We should determine whether this adds a fingerprinting vector and what to do about it if it does. See:
https://bugzilla.mozilla.org/show_bug.cgi?id=1379938

Child Tickets

Change History (7)

comment:1 Changed 15 months ago by mcs

Summary: imvestigate whether the -moz-windows-accent-color-in-titlebar media query adds a fingerprinting vectorinvestigate whether the -moz-windows-accent-color-in-titlebar media query adds a fingerprinting vector

comment:2 Changed 15 months ago by arthuredelstein

Cc: arthuredelstein added

comment:3 Changed 15 months ago by gk

Priority: MediumImmediate

Bumping prio.

comment:4 Changed 15 months ago by gk

Priority: ImmediateHigh

comment:5 Changed 14 months ago by gk

Keywords: TorBrowserTeam201808 added; TorBrowserTeam201807 removed

Move our tickets to August.

comment:6 Changed 13 months ago by arthuredelstein

Keywords: TorBrowserTeam201808R added; TorBrowserTeam201808 removed
Status: newneeds_review

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.

comment:7 Changed 13 months ago by gk

Resolution: fixed
Status: needs_reviewclosed

Looks good.

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