OL 9 /etc/shadow- file must be group-owned by root.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-271813 | OL09-00-002551 | SV-271813r1092151_rule | CCI-000366 | medium |
| Description | ||||
| 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. | ||||
| STIG | Date | |||
| Oracle Linux 9 Security Technical Implementation Guide | 2025-05-08 | |||
Details
Check Text (C-271813r1092151_chk)
Verify that OL 9 configures group ownership of the "/etc/shadow-" file with the following command:
$ stat -c "%G %n" /etc/shadow-
root /etc/shadow-
If "/etc/shadow-" file does not have a group owner of "root", this is a finding.
Fix Text (F-75770r1092150_fix)
Change the group of the file /etc/shadow- to root by running the following command:
$ sudo chgrp root /etc/shadow-