Tails Verification extension is broken once installed in Tails 3.6

Originally created by @emmapeel on #15434 (Redmine)

Reported by user, confirmed by me:

Steps to reproduce:

• Open Tails
• Go to https://tails.boum.org/install/download/index.en.html
• Click I already downloaded Tails 3.6.1
• Click Install verification extension
• Allow / install

Nothing happens. On the journalctl I see:

Mar 21 14:59:44 amnesia audit[2005]: AVC apparmor="DENIED" operation="file_receive" profile="torbrowser_plugin_container" name="/home/amnesia/.tor-browser/profile.default/extensions/{4121db26-aeba-4014-b6fe-1db322d7c585}.xpi" pid=2005 comm=57656220436F6E74656E74 request
Mar 21 14:59:44 amnesia kernel: audit: type=1400 audit(1521644384.636:110): apparmor="DENIED" operation="file_receive" profile="torbrowser_plugin_container" name="/home/amnesia/.tor-browser/profile.default/extensions/{4121db26-aeba-4014-b6fe-1db322d7c585}.xpi" pid=2005 

What should happen

I should get a green button saying: Verify Tails 3.6.1 like in attachment.

Feature Branch: bugfix/15434-tails-verification-extension-vs-AppArmor, torbrowser-launcher.git:bugfix/15434-tails-verification-extension-vs-AppArmor

Attachments

• verify_downloaded.png

Subtasks

• #15441 (closed)

Related issues

• Blocks #13245 (closed)