OpenControls Logo

STIG Viewer

STIGViewer Support

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

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-238357UBTU-20-010436SV-238357r1015156_ruleCCI-002046low
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.
STIGDate
Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide2025-05-16

Related Frameworks

2 mappings across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

MON-07.1Synchronization With Authoritative Time Source
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (6) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-17(9)Disconnect or Disable Access
1.00
AU-8Time Stamps
1.00
AU-8(1)Synchronization with Authoritative Time Source
1.00
CM-6Configuration Settings
1.00
SC-45System Time Synchronization
1.00
SC-45(1)Synchronization with Authoritative Time Source
1.00
NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.3.7
1.00
CCI2 mappings
CCI-002046
1.00
CCI-004926
1.00

Details

Check Text (C-238357r1015156_chk)

Verify the operating system synchronizes internal system clocks to the authoritative time source when the time difference is greater than one second. Check the value of "makestep" by running the following command: $ sudo grep makestep /etc/chrony/chrony.conf makestep 1 -1 If the makestep option is commented out or is not set to "1 -1", this is a finding.

Fix Text (F-41526r654245_fix)

Configure chrony to synchronize the internal system clocks to the authoritative source when the time difference is greater than one second by doing the following: Edit the "/etc/chrony/chrony.conf" file and add: makestep 1 -1 Restart the chrony service: $ sudo systemctl restart chrony.service