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V-271813

CAT II (Medium)

OL 9 /etc/shadow- file must be group-owned by root.

Rule ID

SV-271813r1092151_rule

STIG

Oracle Linux 9 Security Technical Implementation Guide

Version

V1R5

CCIs

CCI-000366

Discussion

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.

Check Content

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

Change the group of the file /etc/shadow- to root by running the following command:

$ sudo chgrp root /etc/shadow-