OL 9 must define default permissions for all authenticated users in such a way that the user can only read and modify their own files.

Setting the most restrictive default permissions ensures that when new accounts are created, they do not have unnecessary access.

Verify that OL 9 defines default permissions for all authenticated users in such a way that the user can only read and modify their own files with the following command:

Note: If the value of the "UMASK" parameter is set to "000" in "/etc/login.defs" file, the severity of this requirement is raised to a CAT I.

$ grep -i umask /etc/login.defs UMASK 077

If the value for the "UMASK" parameter is not "077", or the "UMASK" parameter is missing or is commented out, this is a finding.

Configure OL 9 to define default permissions for all authenticated users in such a way that the user can only read and modify their own files.

Add or edit the lines for the "UMASK" parameter in the "/etc/login.defs" file to "077":

UMASK 077