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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.
STIG Date
Solaris 10 X86 Security Technical Implementation Guide 2020-12-04

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