Detections
Analytics

1.108 UBTU-24-600160

Information

The operating system must compare internal information system clocks at least every 24 hours with an authoritative time server.

GROUP ID: V-270751
RULE ID: SV-270751r1066742

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.

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 endpoints that may not have regular access to the authoritative time server (e.g., mobile, teleworking, and tactical endpoints).

Satisfies: SRG-OS-000785-GPOS-00250, SRG-OS-000355-GPOS-00143

Solution

Configure the operating system to compare the system clock at least every 24 hours to the authoritative time source.

Add or modify the following line in the "/etc/chrony/chrony.conf" file:

server [source] iburst maxpoll = 16

Restart "chrony.service" for the changes to take effect by using the following command:

$ sudo systemctl restart chrony.service

See Also

https://workbench.cisecurity.org/benchmarks/22775

Item Details

Category: AUDIT AND ACCOUNTABILITY

References: 800-53|AU-8(1), CAT|III, CCI|CCI-001891, CCI|CCI-004923, CSCv7|6.1, Rule-ID|SV-270751r1066742_rule, STIG-ID|UBTU-24-600160, Vuln-ID|V-270751

Plugin: Unix

Control ID: 50995bd51e70a68cbcfe8ffe24bb9a6df1b0e2a03081fab98c0a8769bd0a097d