The operating system must synchronize internal information system clocks to the authoritative time source when the time difference is greater than one second.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-203712	SRG-OS-000356-GPOS-00144	SV-203712r379735_rule		Medium

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. Synchronizing internal information system clocks provides uniformity of time stamps for information systems with multiple system clocks and systems connected over a network. Organizations should consider setting time periods for different types of systems (e.g., financial, legal, or mission-critical systems). Organizations should also consider endpoints that may not have regular access to the authoritative time server (e.g., mobile, teleworking, and tactical endpoints). This requirement is related to the comparison done every 24 hours in SRG-OS-000355 because a comparison must be done in order to determine the time difference.

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. Synchronizing internal information system clocks provides uniformity of time stamps for information systems with multiple system clocks and systems connected over a network. Organizations should consider setting time periods for different types of systems (e.g., financial, legal, or mission-critical systems). Organizations should also consider endpoints that may not have regular access to the authoritative time server (e.g., mobile, teleworking, and tactical endpoints). This requirement is related to the comparison done every 24 hours in SRG-OS-000355 because a comparison must be done in order to determine the time difference.

STIG	Date
General Purpose Operating System Security Requirements Guide	2021-10-05

Details

Check Text ( C-3837r375143_chk )
Verify the operating system synchronizes internal information system clocks to the authoritative time source when the time difference is greater than one second. If it does not, this is a finding.

Fix Text (F-3837r375144_fix)
Configure the operating system to synchronize internal information system clocks to the authoritative time source when the time difference is greater than the organization-defined time period.