The Horizon Connection Server must be configured in accordance with the security configuration settings based on DoD security configuration or implementation guidance, including STIGs, NSA configuration guides, CTOs, and DTMs.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-246906	HRZV-7X-000025	SV-246906r768678_rule		Medium

Description
Configuring the application to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security baseline across DoD that reflects the most restrictive security posture consistent with operational requirements. Configuration settings are the set of parameters that can be changed that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the application, including the parameters required to satisfy other security control requirements.

Description

Configuring the application to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security baseline across DoD that reflects the most restrictive security posture consistent with operational requirements. Configuration settings are the set of parameters that can be changed that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the application, including the parameters required to satisfy other security control requirements.

STIG	Date
VMware Horizon 7.13 Connection Server Security Technical Implementation Guide	2021-07-30

Details

Check Text ( C-50338r768676_chk )
On the Horizon Connection Server, launch the Registry Editor. Traverse the registry tree to "HKLM\Software\VMware, Inc.\VMware VDM\Plugins\wsnm\TunnelService\Params". Locate the "JvmOptions" key. If "JvmOptions" does not exist, or the path does not exist, this is NOT a finding. If "JvmOptions" does not include the "-Djdk.tls.rejectClientInitiatedRenegotiation=true" option, this is a finding.

Fix Text (F-50292r768677_fix)
On the Horizon Connection Server, launch the Registry Editor. Traverse the registry tree to "HKLM\Software\VMware, Inc.\VMware VDM\plugins \wsnm\TunnelService\Params". Locate the "JvmOptions" key. If "JvmOptions" exists: Right-click "JvmOptions", select "Modify...". Remove the following option, if it exists: -Djdk.tls.rejectClientInitiatedRenegotiation=false Add the following to the end of the string: -Djdk.tls.rejectClientInitiatedRenegotiation=true Click "OK".

Fix Text (F-50292r768677_fix)

On the Horizon Connection Server, launch the Registry Editor. Traverse the registry tree to "HKLM\Software\VMware, Inc.\VMware VDM\plugins
\wsnm\TunnelService\Params". Locate the "JvmOptions" key.

If "JvmOptions" exists:

Right-click "JvmOptions", select "Modify...". Remove the following option, if it exists:

-Djdk.tls.rejectClientInitiatedRenegotiation=false

Add the following to the end of the string:

-Djdk.tls.rejectClientInitiatedRenegotiation=true

Click "OK".