The Video Conferencing (VC) system implementing a single CODEC supporting conferences on multiple networks having different classification levels must be implemented in such a manner that configuration information for a network having a higher classification level is not disclosed to a network having a lower classification level.

From Voice Video Policy Security Technical Implementation Guide

Part of SRG-POL-300611

Associated with: CCI-003072

VVSP-01-000168_rule The Video Conferencing (VC) system implementing a single CODEC supporting conferences on multiple networks having different classification levels must be implemented in such a manner that configuration information for a network having a higher classification level is not disclosed to a network having a lower classification level.

Vulnerability discussion

The information security architecture at the individual information system level must be consistent with and complement the more global, organization-wide information security architecture that is integral to and developed as part of the enterprise architecture. The information security architecture includes an architectural description, the placement/allocation of security functionality (including security controls), security-related information for external interfaces, information being exchanged across the interfaces, and the protection mechanisms associated with each interface.In addition, the security architecture can include other important security-related information, for example, user roles and access privileges assigned to each role; unique security requirements; the types of information processed, stored, and transmitted by the information system; restoration priorities of information and information system services; and any other specific protection needs.Connecting the CODEC to a network while it is being reconfigured could lead to the disclosure of sensitive configuration information for a network having a higher classification level to a network having a lower classification level. Ideally, the CODEC will be disconnected from any network while it is being reconfigured. However, the requirement can be met by using a procedure that purges the configuration for the currently connected network, power cycling the CODEC as required (for a minimum of 60 seconds per VVSP-01-000165) as the CODEC is switched to the next network, and then reconfiguring the CODEC for the next session.

Check content

If the Voice Video system does not implement a single CODEC supporting conferences on multiple networks having different classification levels, this is not applicable. Review the Voice Video SSP for the system. Confirm the VC system configuration information for a network having a higher classification level is not disclosed to a network having a lower classification level. Observe system operation while transitioning between networks to verify one of the following: - The CODEC is switched to a disconnected/unused switch position while it is being purged/reconfigured. - The CODEC is purged while connected to one network, power cycled as it is switched to the next network, and then reconfigured for that network. - Alternately, if a manual switching procedure is used, the CODEC is physically disconnected from any network while being reconfigured. If none of these procedures is being followed, this is a finding.

Fix text

Document in the Voice Video SSP for this system one of the following three solutions: - Architect, implement, and configure the system so that the A/B, A/B/C, or A/B/C/D switch connects the CODEC to an unused switch position while it is being reconfigured during transition from one network to another. - Architect, implement, and configure the system so that the CODEC configuration is purged before it is switched to the next network, the CODEC is power cycled for the required time period as the A/B, A/B/C, or A/B/C/D switch connects the CODEC to the next network, and then the CODEC is reconfigured for that network. - If a manual switching procedure is used, physically disconnect the CODEC from any network while it is reconfigured for the next network. Document the procedure in the Voice Video SSP, along with any configurations.

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