The organization must transmit unencrypted and unsigned Voice Video endpoint configuration files traversing the DISN in an encrypted VPN between enclaves.

From Voice Video Policy Security Technical Implementation Guide

Part of SRG-POL-300042

Associated with: CCI-002163

VVSP-01-000013_rule The organization must transmit unencrypted and unsigned Voice Video endpoint configuration files traversing the DISN in an encrypted VPN between enclaves.

Vulnerability discussion

During Voice Video endpoint registration with the session controller, a file containing specific configuration settings is downloaded by the endpoint from the session manager. This file contains the phone number assigned to the endpoint, the IP addresses for session management, the software menus specific to the system, the endpoint configuration password, the stored personal preferences and speed dial numbers, and other system operational information. These configuration settings can be updated by resetting and re-registering the endpoint, which causes an updated configuration file to be downloaded.When Voice Video configuration files traverse a network in an unencrypted state, system information may be used by an adversary, which in the aggregate may reveal sensitive data. When Voice Video traffic is passed in the clear, it is open to sniffing attacks. This vulnerability exists whether the traffic is on a LAN or a WAN. Unencrypted and unsigned configuration files must be wrapped within an encrypted VPN to mitigate this risk.

Check content

Review the Voice Video registration policies enforced by session managers for approved Voice Video endpoints. Confirm the Voice Video endpoint configuration files traversing the DISN are encrypted within a VPN. Verify the VPN is secured using FIPS-validated encryption between enclaves. If the Voice Video endpoint configuration files traversing the DISN are not encrypted within a VPN, this is a finding. If the VPN is not secured using FIPS-validated encryption between enclaves, this is a finding. If vendor-generated certificates are used instead of DoD PKI certificates, reduce the severity to CAT III.

Fix text

Configure the Voice Video endpoint configuration files traversing the DISN to be in an encrypted VPN between enclaves. Configure the VPN to use FIPS-validated encryption between enclaves. Document Voice Video registration architecture to enforce for approved Voice Video endpoints.

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