Check: PHTN-67-000061
VMware vSphere 6.7 Photon OS STIG:
PHTN-67-000061
(in versions v1 r6 through v1 r1)
Title
The Photon operating system must be configured to synchronize with an approved DoD 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 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-000355-GPOS-00143, SRG-OS-000356-GPOS-00144
Check Content
At the command line, execute the following command: # grep -E '^\s*(server|peer|multicastclient)' /etc/ntp.conf Confirm the servers and peers or multicastclient (as applicable) are local or an authoritative U.S. DoD source. If no lines are returned or a non-local/non-authoritative time server is used, this is a finding. OR Navigate to https://<hostname>:5480 to access the Virtual Appliance Management Interface (VAMI). Authenticate and navigate to "Time". If no appropriate time server is specified, this is a finding.
Fix Text
Open /etc/ntp.conf with a text editor and set its contents to the following: tinker panic 0 restrict default kod nomodify notrap nopeer restrict 127.0.0.1 restrict -6 ::1 driftfile /var/lib/ntp/drift/ntp.drift server <site-specific-time-source-IP> At the command line, execute the following commands: # chkconfig ntpd on # systemctl start ntp OR Navigate to https://<hostname>:5480 to access the VAMI. Authenticate and navigate to "Time". Click "Edit" in the top right and configure at least one appropriate NTP server. Click "OK".
Additional Identifiers
Rule ID: SV-239132r877038_rule
Vulnerability ID: V-239132
Group Title: SRG-OS-000355-GPOS-00143
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 |