V-259897

SV-259897r1173868_rule

CAT II

An IP-based VTC system implementing a single CODEC that supports conferences on multiple networks with different classification levels must be implemented in such a way that configuration information for a network having a higher classification level is not disclosed to a network having a lower classification level.

From: Enterprise Voice, Video, and Messaging Policy Security Requirements Guide (V1R4)

Description

<VulnDiscussion>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 SRG-VOIP-000140) as the CODEC is switched to the next network, and then reconfiguring the CODEC for the next session.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>

Check Procedure

Review the VTC system architecture documentation and 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, verify 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

Do one of the following: - Architect, implement, and configure the system so 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 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.

CCI Reference

CCI-002204,CCI-000366

Created: 2026-04-07 20:08:15
Last Updated: 2026-04-07 20:08:15