1618537 - iCloud.com broken with privacy.resistFingerprinting turned on

Status: RESOLVED WORKSFORME

(Core :: Privacy: Anti-Tracking, defect)

Description

[ballum]

Attachment: 111.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0

Steps to reproduce:

i tried to open an icloud link, i made from the iphone to myself.

Actual results:

when trying to open the link (tried several times with different links and on different windows devices) a connection error appears (verbindingsfout) .

Cannot connect to server.

After clicking OK it keeps trying to reconnect, with a result that it ends in a loop, giving the same error

Expected results:

The link should have opened properly, loading all the attachments.

Comment 1

[Daniel Bodea [:danibodea]]

I did not manage to reproduce your issue on my system.
I used this link: https://share.icloud.com/photos/0GzH58spUxes4-4I54Bez5OkQ

Please help us with some information:

1. Can you reproduce with this link?
2. Can you share your link or information on how you created it?
3. If this issue still reproduces, I need to ask you to attempt reproducing it in safe mode. here is a link that can help you:
   https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
   If it still reproduces in safe mode it means it might be a valid and serious bug.
4. Please also tell us if you see any errors in the browser console. (Open the browser console <CTRL+SHIFT+J> before reproducing the issue and check whether any errors were displayed while performing the steps to reproduce. Please copy the errors to this bug.

Thank you for your contribution!

Comment 2

[ballum]

The problem persists with every icloud link, and even with https://www.icloud.com/

By just visiting the website I receive the error.

Comment 3

[Daniel Bodea [:danibodea]]

So I understand that you CAN reproduce with my link.
What about in safe mode?
Does the Browser console show any errors?
Thanks.

Comment 4

[u463949]

I can confirm this issue with Firefox 74 running on Linux. I can trigger it at will by enabling the "privacy.resistFingerprinting" config flag. Disabling it restores icloud access.

Comment 5

[Daniel Bodea [:danibodea]]

I succeeded in reproducing this issue on all the last versions of the main channels, on Windows 10 and Ubuntu 18. I think the console warning that appears at the same time the pop-up error does is the "Could not authenticate - TIMEOUT" warning.

Steps used:

1. Open browser.
2. Go o about:config
3. Set the value of the "privacy.resistFingerprinting" to true.
4. Restart session.
5. Load: www.icloud.com and wait.
   Actual: "Connection ERROR - iCloud encountered an error while trying to connect to the server." error pop-up is displayed.
   Expected: The website load as expected and the error is not shown.

Comment 6

[Elver Galarga]

I can confirm this for FF77 on macOS as well.

If "privacy.resistFingerprinting" is set to true, Apple ID login frames (eg the login link on https://music.apple.com) will fail to load.

If "privacy.resistFingerprinting" is set to false, the login form will load as expected.

Comment 7

[Kershaw Chang [:kershaw]]

This is not a networking bug.

Comment 8

[Johann Hofmann [:johannh]]

Tom, can you block this on the right bugs, please? Thanks!

Comment 9

[Kestrel]

Login to icloud.com currently works for me on Firefox 109 with RFP enabled.