Rule ID
SV-246866r768558_rule
Version
V1R1
CCIs
Data loss prevention is a primary concern for the DoD, maintaining positive control of data at all times and only allowing flows over channels that are for that explicit purpose and monitored appropriately. By default, the Blast protocol on the Horizon Agent will block clipboard "copy/paste" actions from the desktop to the client but allow actions from the client to the desktop. This configuration must be validated and maintained over time.
Ensure the vdm_blast.admx template is added. Open the "Group Policy Management" MMC snap-in. Open the site-specific GPO applying Horizon settings to the VDI desktops or RDS hosts. Navigate to Computer Configuration >> Policies >> Administrative Templates >> VMware Blast. Double-click the "Configure clipboard redirection" setting. If "Configure clipboard redirection" is "Not Configured" or "Disabled", this is not a finding. In the drop-down under "Configure clipboard redirection", if "Enabled server to client only" or "Enabled in both directions" is selected, this is a finding.
Ensure the vdm_blast.admx template is added. Open the "Group Policy Management" MMC snap-in. Open the site-specific GPO applying Horizon settings to the VDI desktops or RDS hosts. Navigate to Computer Configuration >> Policies >> Administrative Templates >> VMware View Agent Configuration >> VMware Blast. Double-click the "Configure clipboard redirection" setting. Click the radio button next to "Disabled". Click "OK".