1653333 - privacy.resistfingerprinting reports local timezone on Android

Status: VERIFIED FIXED

(Core :: JavaScript: Internationalization API, defect)

Description

[Kevin Brosnan [Ex-Mozilla]]

Steps to reproduce

• don't actually be in timezone UTC 0
• enable RFP (privacy.resistFingerprinting = true)
• load TZP ( https://ghacksuserjs.github.io/TorZillaPrint/TorZillaPrint.html#language )
• expand show details

Expected behavior

• timezone results should be sets of 0 | 0 and UTC
• relevant date/times displayed should use Coordinated Universal Time or GMT (or your locale equivalent)

Actual behavior

• results are not spoofed, instead they reveal your real timezone

Device information

• Android device: Samsung Galaxy A30
• Fenix version: at least since 2020 07 11 092223

Other

I didn't do any regression testing but pretty sure this is the ticket : 1534160

@tomrittervg

Comment 1

[André Bargull [:anba]]

The patch in bug 1651686 should fix this.

Comment 2

[BugBot [:suhaib / :marco]]

Set release status flags based on info from the regressing bug 1534160

Comment 3

[Gian-Carlo Pascutto [:gcp]]

André, can you confirm this is fixed in Firefox 80?

Comment 4

[André Bargull [:anba]]

Bug 1651686 landed today, so it'll take a while until the Playstore version gets this update. I guess it's possible to test this next week.

Comment 5

[Thorin [:thorin]]

2020 07 22 094100 confirmed fixed

Comment 6

[Kevin Brosnan [Ex-Mozilla]]

Yes, confirming this is fixed as well.

Comment 7

[André Bargull [:anba]]

Thanks for confirming this works again as expected!