this post was submitted on 09 Apr 2024
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It’d be dangerous if an installed app claimed to be something like sudo or bash. Even if a mechanism was created for flatpak apps to claim a single shell command, there is no centralized authority on all flatpak apps to vet them. If there was for flathub, and each uploaded package was checked, that still leaves every other non-flathub flatpak repo which must implement the same vetting. Because there’s no way to guarantee to do it safely, and because flatpak devs are unwilling to compromise, this is just what we get.
https://github.com/flatpak/flatpak/issues/1188
However in the same way, compromised flatpak app can also put a malicious .desktop file in
~/.share/applications
, which also allows execution of arbitrary command, even outside of the flatpak sandbox.User home permission is just incredibly dangerous on linux, I think we need special permission to explicitly allow access to these folders in home. Fortunately more and more app starts to support portal, which makes them much more secure.
Although, I do wish portal would have a access per session vs access forever option. For now if you open a folder through portal, the app was granted r/w permission to that folder forever.