The time synchronization configuration file (such as /etc/ntp.conf) must not have an extended ACL.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-227567	GEN000253	SV-227567r603266_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 protected, unauthorized modifications could result in the failure of time synchronization.

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 protected, unauthorized modifications could result in the failure of time synchronization.

STIG	Date
Solaris 10 X86 Security Technical Implementation Guide	2022-09-07

Details

Check Text ( C-29729r488237_chk )
Check for an extended ACL on the NTP configuration file. # ls -l /etc/inet/ntp.conf If the permissions contain a "+", the file has an extended ACL and this is a finding.

Fix Text (F-29717r488238_fix)
Remove the extended ACL from the file. # chmod A- /etc/inet/ntp.conf