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The time synchronization file (such as /etc/ntp.conf) must be group-owned by root, bin, sys, or system.


Overview

Finding ID Version Rule ID IA Controls Severity
V-22295 GEN000251 SV-44779r1_rule Medium
Description
A synchronized system clock is critical for the enforcement of time-based policies and the correlation of logs and audit records with other systems. If an illicit time source is used for synchronization, the integrity of system logs and the security of the system could be compromised. If the configuration files controlling time synchronization are not owned by a system group, unauthorized modifications could result in the failure of time synchronization.
STIG Date
SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide 2018-09-19

Details

Check Text ( C-42285r1_chk )
Check the group ownership of the NTP configuration file.

Procedure:
# ls -lL /etc/ntp.conf

If the group owner is not root, bin, sys, or system, this is a finding.
Fix Text (F-38230r1_fix)
Change the group-owner of the NTP configuration file.

Procedure:
# chgrp root /etc/ntp.conf