SLEM 5 default permissions must be defined in such a way that all authenticated users 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 SLEM 5 defines default permissions for all authenticated users in such a way that the users can only read and modify their own files with the following command:

     > grep -i "^umask" /etc/login.defs
     UMASK 077

If the "UMASK" variable is set to "000", the severity is raised to a CAT I and this is a finding.

If the value of "UMASK" is not set to "077", the line is commented out, or the line is missing, this is a finding.

Configure SLEM 5 to define the default permissions for all authenticated users in such a way that the users can only read and modify their own files.

Add or modify the following line in the "/etc/login.defs" file:

UMASK 077