AVM Fritz!Box Router backup-file upload fails reproducibly with wrong decrypt password with uBlock Origin active

[hondogitsune]

Edit:
Deleted, because it was all my fault for having missed disabling !*##+js(aeld, /blur|visibilitychange/) in my filters. Sorry about that :(

[gorhill]

Troubleshooting information

Please provide troubleshooting information as requested in the template.

[uBlock-user]

/10.0.0.\d{1,3}/
Exclude/whitelist this or whatever regex matches your LAN IP range.

Sounds like an issue with Block Outsider Intrusion into LAN

[gorhill]

I would, but every test requires

I don't understand, there is nothing to test, troubleshooting information is available in uBO's About pane in its dashboard. The information would have shown whether Block LAN list was enabled or not.

[uBlock-user]

Yes indeed, it sounds like a meaningful protection that external scripts cannot attack the LAN.

No, your configuration of uBO doesn't show you activated that list.

[gorhill]

filterset (user): [array of 513 redacted]

However the takeaway here is that a POST initiated from http://10.0.0.1/ to http://10.0.0.1/ was blocked without the badge updating there was a block happening.

Use the logger to diagnose filter issues when using heavily customized settings.