Title

The VMM must, for networked systems, compare internal information system clocks at least every 24 hours with an authoritative time source. (Cat II impact)

Discussion

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 of the configured acceptable allowance (drift) may be inaccurate. Synchronizing internal VMM clocks provides uniformity of time stamps for VMMs 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).

Check Content

Verify the VMM, for networked systems, compares internal information system clocks at least every 24 hours with an authoritative time source. If it does not, this is a finding.

Fix Text

Configure the VMM, for networked systems, to compare internal information system clocks at least every 24 hours with an authoritative time source.

Additional Identifiers

Rule ID: SV-207463r1038976_rule

Vulnerability ID: V-207463

Group Title: SRG-OS-000355

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.