check permissions on acme.json during startup #1009
Merged
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Follow-up from #639. At the moment people that were affected by this security issue would still be vulnerable even after upgrading. This patch makes sure permissions are also checked for already existing files.
This might also happen with docker-compose, where it isn't uncommon to just touch a file so that it bind-mounts as a file instead of a directory, and some users might forget to put the permissions afterwards.
In case of perm issue it'd fail on startup like this :