this post was submitted on 20 Oct 2024
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Privacy
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Flatpak doesnt let the browser use its normal sandboxing for process isolation using user namespaces. Read more here or search on the web for "flatpak weaken browser security": https://discussion.fedoraproject.org/t/security-problems-with-flatpak-browsers-firefox-chromium-bubblejail-seccomp-user-namespaces/121109/5
That’s a lot to unpack there (ba-dum-ts!). So Firefox has a specific Flatpak version that has a bigger attack surface? Or am I getting it wrong? A good bit of it flew over my head TBH.
Basically, Flatpak stops Firefox from using its normal security measures for isolation. Librewolf (a fork of Firefox) has the same problems resulting from Flatpak.