The time synchronization configuration file (such as /etc/ntp.conf) must have mode 0640 or less permissive.

From VMware vRealize Automation 7.x SLES Security Technical Implementation Guide

Associated with: CCI-001891

SV-100445r1_rule The time synchronization configuration file (such as /etc/ntp.conf) must have mode 0640 or less permissive.

Vulnerability discussion

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.

Check content

Check that the mode for the NTP configuration file is not more permissive than "0640": # ls -l /etc/ntp.conf If the mode is more permissive than "0640", this is a finding.

Fix text

Change the mode of the NTP configuration file to "0640" or less permissive: # chmod 0640 /etc/ntp.conf

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