The /etc/shadow file (or equivalent) must be group-owned by root, bin, sys, or shadow.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22339	GEN001410	SV-45001r2_rule		Medium

Description
The /etc/shadow file contains the list of local system accounts. It is vital to system security and must be protected from unauthorized modification. The file also contains password hashes which must not be accessible to users other than root.

STIG	Date
SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide	2018-09-19

Details

Check Text ( C-42406r2_chk )
Check the ownership of the /etc/shadow file. Procedure: # ls -lL /etc/shadow If the file is not group-owned by root, bin, sys, or shadow, this is a finding.

Fix Text (F-38416r1_fix)
Change the group-owner of the /etc/shadow file. Procedure: # chgrp root /etc/shadow