The SUSE operating system default permissions must be defined in such a way that all authenticated users can only read and modify their own files.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-217161 | SLES-12-010620 | SV-217161r991590_rule | Medium |
| Description |
| Setting the most restrictive default permissions ensures that when new accounts are created, they do not have unnecessary access. |
| STIG | Date |
| SLES 12 Security Technical Implementation Guide | 2024-11-25 |
Details
| Check Text (C-18389r369639_chk) |
| Verify the SUSE operating system defines default permissions for all authenticated users in such a way that the users can only read and modify their own files. Check the system default permissions 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", "UMASK" is commented out, or "UMASK" is missing completely, this is a finding. |
| Fix Text (F-18387r369640_fix) |
| Configure the SUSE operating system 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 edit the "UMASK" parameter in the "/etc/login.defs" file to match the example below: UMASK 077 |