The Photon operating system must define default permissions for all authenticated users in such a way that the user can only read and modify their own files.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-258856 | PHTN-40-000187 | SV-258856r991590_rule | Medium |
| Description |
| Setting the most restrictive default permissions ensures that when new accounts are created they do not have unnecessary access. |
| STIG | Date |
| VMware vSphere 8.0 vCenter Appliance Photon OS 4.0 Security Technical Implementation Guide | 2024-07-11 |
Details
| Check Text (C-62596r933627_chk) |
| At the command line, run the following command to verify the default umask configuration: # grep '^UMASK' /etc/login.defs Expected result: UMASK 077 If the "UMASK" option is not set to "077", is missing or commented out, this is a finding. |
| Fix Text (F-62505r933628_fix) |
| Navigate to and open: /etc/login.defs Add or update the following line: UMASK 077 |