Access to localStorage blocked for in 3rd party context

Kein commented 4 years ago

Prerequisites

[x] I performed a cursory search of the issue tracker to avoid opening a duplicate issue
- Your issue may already be reported.
- [x] I also searched the existing issues at https://github.com/gorhill/uMatrix/issues
[x] This is not a support issue or a question
- Support issues and questions are handled at /r/uMatrix
I tried to reproduce the issue when...
- [x] uMatrix is the only extension
- [x] uMatrix with default lists/settings
- [ ] using a new, unmodified browser profile
[x] I am running the latest version of uMatrix
[x] I checked the documentation to understand that the issue I report is not a normal behavior
[x] I used the logger to rule out that the issue is caused by my ruleset

Description

A specific URL where the issue occurs

discord.com

Steps to Reproduce

Run Discord in browser
Disable matrix for domain
Try to play any embed Twitch clip

Ruleset

N/A, uMatrix disabled, web-workers allowed (rest of the setting max allowance)

Supporting evidence

player-main-a60a54700d8681907841.js:1 Failed to get log level override from local storage. {err: DOMException: Failed to read the 'localStorage' property from 'Window': Access is denied for this d…, key: "twilight.minConsoleLogLevel"}err: DOMException: Failed to read the 'localStorage' property from 'Window': Access is denied for this document.
    at new e (https://static.twitchcdn.net/assets/player-main-a60a54700d8681907841.js:1:203860)
    at Se (https://static.twitchcdn.net/assets/player-main-a60a54700d8681907841.js:1:201825)
    at Module.gg62 (https://static.twitchcdn.net/assets/player-main-a60a54700d8681907841.js:1:1467827)
    at m (https://player.twitch.tv/?channel=systemarcadia&player=facebook&autoplay=1&parent=meta.tag&auto_play=1:1:4294)
    at Object.246 (https://static.twitchcdn.net/assets/player-main-a60a54700d8681907841.js:1:154199)
    at m (https://player.twitch.tv/?channel=systemarcadia&player=facebook&autoplay=1&parent=meta.tag&auto_play=1:1:4294)
    at i (https://player.twitch.tv/?channel=systemarcadia&player=facebook&autoplay=1&parent=meta.tag&auto_play=1:1:4155)
    at Array.e [as push] (https://player.twitch.tv/?channel=systemarcadia&player=facebook&autoplay=1&parent=meta.tag&auto_play=1:1:4018)
    at https://static.twitchcdn.net/assets/player-main-a60a54700d8681907841.js:1:47key: "twilight.minConsoleLogLevel"__proto__: Object
e @ player-main-a60a54700d8681907841.js:1
Se @ player-main-a60a54700d8681907841.js:1
gg62 @ player-main-a60a54700d8681907841.js:1
m @ ?channel=systemarcadia&player=facebook&autoplay=1&parent=meta.tag&auto_play=1:1
246 @ player-main-a60a54700d8681907841.js:1
m @ ?channel=systemarcadia&player=facebook&autoplay=1&parent=meta.tag&auto_play=1:1
i @ ?channel=systemarcadia&player=facebook&autoplay=1&parent=meta.tag&auto_play=1:1
e @ ?channel=systemarcadia&player=facebook&autoplay=1&parent=meta.tag&auto_play=1:1
(anonymous) @ player-main-a60a54700d8681907841.js:1
04:16:57.240 player-main-a60a54700d8681907841.js:1 4:16:57 AM [ERROR] Uncaught error. DOMException: Failed to read the 'localStorage' property from 'Window': Access is denied for this document.

Your environment

uMatrix version: 1.4.1b6
Browser Name and version: Chromium Ungoogled 83.0.4103.61
Operating System and version: Win7x64

uBlock-user commented 4 years ago

Blocking third-party cookies/storage causes this. Are you blocking third-party cookies/storage ?

Disable matrix for domain

Disabling matrix does not disable per-site switches. Did you disable them all individually ?

gorhill commented 4 years ago

I don't see any errors in there that I can link to uMatrix.

Blocking 3rd-party cookies/data in the browser preferences will cause this.

Kein commented 4 years ago

No 3rd party cookies are blocked by browser, cookies are managed by uMatrix, I've assumed that disabling uMatrix for domain should disable cookie restrictions imposed by uMatrix as well? Is that not the case?

uBlock-user commented 4 years ago

Only outgoing cookies are blocked by uMatrix.

Kein commented 4 years ago

Okay? That does not explain why the error persist unless uMatrix is uninstalled though ¯\_(ツ)_\/¯

gorhill commented 4 years ago

Your repro steps are problematic, they assume whoever is interested in trying to reproduce knows anything about Discord. I don't. I loaded https://discord.com in the browser, clicked "Open Discord in your browser", and I don't see any embedded Twitch video.

liamengland1 commented 4 years ago

Your repro steps are problematic, they assume whoever is interested in trying to reproduce knows anything about Discord. I don't. I loaded https://discord.com in the browser, clicked "Open Discord in your browser", and I don't see any embedded Twitch video.

I made a test server: https://discord.gg/pp3fnhR

gorhill commented 4 years ago

Thanks.

Starting from default ruleset, I create these rules and I could play the embedded Twitch video fine:

discord.com d3gdm2urgmeunj.cloudfront.net * allow
discord.com discord.gg * allow
discord.com discord.media * allow
discord.com twitch.map.fastly.net * allow
discord.com twitch.map.fastly.net frame allow
discord.com twitch.tv * allow
discord.com twitch.tv frame allow
discord.com twitchcdn.net * allow
discord.com twitchsvc.net * allow

Using Firefox 77, set "Enhanced Tracking Protection" set to "Standard".

uBlock-user commented 4 years ago

https://www.chromium.org/for-testers/bug-reporting-guidelines/uncaught-securityerror-failed-to-read-the-localstorage-property-from-window-access-is-denied-for-this-document

why the error persist unless uMatrix is uninstalled though

Can you reproduce this on Chrome/Chromium, if not, then it's a ungoogled chromium issue.

uBlockOrigin / uMatrix-issues