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This built-in function ensures that the home directory of each non-privileged user belongs to the user and that third party users (either belonging to the same group or “everyone”) may not write to it. It is generally recommended that user home directories are set to mode 0755 or stricter (e.g., 0700). This test succeeds if each home directory is configured properly and fails otherwise. Either of the keywords
maskmay be used here to specify desired permission levels for home directories. The mode keyword will accept home directories matching exactly a specified level and the mask keyword will accept home directories that are at the specified level or more secure.
If third parties can write to the home directory of a user, they can force the user to execute arbitrary commands by tampering with the
If files need to be shared among users of the same group, it is usually recommended that a dedicated directory writeable to the group be used, not a user’s home directory.
For any misconfigured home directories, run
chmod 0755 <user directory> and change the ownership accordingly.
description: "This check reports user accounts that have home directories with incorrect user or group ownerships."