dir: Ensure ~/.local/share/flatpak is 0700

Browse Source

This goes into a big old topic about Unix homedir permissions; it's not uncommon
for general purpose OS vendors to have homedirs be 0755. In that case,
applications need to ensure confidentiality for data requiring it (classically
e.g. `~/.ssh`) by making the dirs `0700`.

While most of the data in the flatpak per-user dir probably isn't confidential
(debatably) we have a different issue; if container content includes suid or
world-writable files/dirs, then having that data accessible to other users
is obviously problematic.

We're going to fix flatpak/ostree to not create files with those modes
to begin with, but this simple fix closes off the attack route for
the per-user directory.

A different fix will be necessary for the system-wide repo.

See: https://github.com/flatpak/flatpak/pull/837
(cherry picked from commit daf36ba2af)

...

This commit is contained in:

500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f