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-258856r933629_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	2023-10-29

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