RHEL 9 /etc/shadow- file must be group-owned by root. GROUP ID: V-257913 RULE ID: SV-257913r991589 The "/etc/shadow-" file is a backup file of "/etc/shadow", and as such, contains the list of local system accounts and password hashes. Protection of this file is critical for system security.
Solution
Change the group of the file /etc/shadow- to root by running the following command: $ sudo chgrp root /etc/shadow-