OL 8 must disable the chrony daemon from acting as a server.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-248821	OL08-00-030741	SV-248821r780029_rule		Low

Description
Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events. Sources outside the configured acceptable allowance (drift) may be inaccurate. Minimizing the exposure of the server functionality of the chrony daemon diminishes the attack surface. Note that USNO offers authenticated NTP service to DoD and U.S. Government agencies operating on the NIPR and SIPR networks. Visit https://www.usno.navy.mil/USNO/time/ntp/dod-customers for more information.

Description

Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events. Sources outside the configured acceptable allowance (drift) may be inaccurate. Minimizing the exposure of the server functionality of the chrony daemon diminishes the attack surface. Note that USNO offers authenticated NTP service to DoD and U.S. Government agencies operating on the NIPR and SIPR networks. Visit https://www.usno.navy.mil/USNO/time/ntp/dod-customers for more information.

STIG	Date
Oracle Linux 8 Security Technical Implementation Guide	2023-06-02

Details

Check Text ( C-52255r780027_chk )
Verify OL 8 disables the chrony daemon from acting as a server with the following command: $ sudo grep -w 'port' /etc/chrony.conf port 0 If the "port" option is not set to "0" or is commented out or missing, this is a finding.

Fix Text (F-52209r780028_fix)
Configure OL 8 to disable the chrony daemon from acting as a server by adding/modifying the following line in the "/etc/chrony.conf" file. port 0