Check: ESXI-67-000046
VMware vSphere 6.7 ESXi STIG:
ESXI-67-000046
(in versions v1 r3 through v1 r1)
Title
The ESXi host must configure NTP time synchronization. (Cat II impact)
Discussion
To ensure the accuracy of the system clock, it must be synchronized with an authoritative time source within DoD. Many system functions, including time-based logon and activity restrictions, automated reports, system logs, and audit records, depend on an accurate system clock. If there is no confidence in the correctness of the system clock, time-based functions may not operate as intended and records may be of diminished value. Satisfies: SRG-OS-000355-VMM-001330, SRG-OS-000356-VMM-001340
Check Content
From the vSphere Client, select the ESXi host and go to Configure >> System >> Time Configuration. Click "Edit" to verify the configured NTP servers and service startup policy. or From a PowerCLI command prompt while connected to the ESXi host, run the following command: Get-VMHost | Get-VMHostNTPServer Get-VMHost | Get-VMHostService | Where {$_.Label -eq "NTP Daemon"} If the NTP service is not configured with authoritative DoD time sources or the service does not have a "Policy" of "on" or is stopped, this is a finding.
Fix Text
From the vSphere Client, select the ESXi host and go to Configure >> System >> Time Configuration. Click "Edit" to configure the NTP service to start and stop with the host and with authoritative DoD time sources. or From a PowerCLI command prompt while connected to the ESXi host, run the following command: $NTPServers = "ntpserver1","ntpserver2" Get-VMHost | Add-VMHostNTPServer $NTPServers Get-VMHost | Get-VMHostService | Where {$_.Label -eq "NTP Daemon"} | Set-VMHostService -Policy On Get-VMHost | Get-VMHostService | Where {$_.Label -eq "NTP Daemon"} | Start-VMHostService
Additional Identifiers
Rule ID: SV-239301r878143_rule
Vulnerability ID: V-239301
Group Title: SRG-OS-000355-VMM-001330
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-001891 |
The information system compares internal information system clocks on an organization-defined frequency with an organization-defined authoritative time source. |
CCI-002046 |
The information system synchronizes the internal system clocks to the authoritative time source when the time difference is greater than the organization-defined time period. |
Controls
Number | Title |
---|---|
AU-8 (1) |
Synchronization With Authoritative Time Source |