TOSS 5 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.

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

Verify TOSS 5 defines default permissions for all authenticated users in such a way that the user can only read and modify their own files using the following command:

# 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 TOSS 5 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