Title

The Voice Video Session Manager must use encryption for signaling and media traffic. (Cat I impact)

Discussion

All signaling and media traffic from a Voice Video Session Manager must be encrypted. Network elements utilizing encryption are required to use FIPS compliant mechanisms for authenticating to cryptographic modules. FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements. Unapproved mechanisms used for authentication to the cryptographic module are not verified, and therefore cannot be relied upon to provide confidentiality or integrity and DoD data may be compromised. Voice Video protocol suites include SIP, SCCP, and H.323. Each of these protocol suites uses different methodologies for securing transmitted signaling. The H.323 protocol suite relies on the H.235 series, which describes security within H.323, including security for both signaling and media. For SIP protocol, the DoD has created the AS-SIP protocol, which provides for implementing Transport Layer Security (TLS), Multi-Level Precedence and Preemption (MLPP), reliance on Secure Real-Time Transport Protocol (SRTP) for media streams, and Differentiated Services Code Point (DSCP) for traffic management through priority packet routing. To secure SCCP, TLS must be implemented with the protocol.

Check Content

Verify the Voice Video Session Manager uses encryption for signaling and media traffic. If the Voice Video Session Manager does not use encryption for signaling and media traffic, this is a finding.

Fix Text

Configure the Voice Video Session Manager to use encryption for signaling and media traffic.

Additional Identifiers

Rule ID: SV-206830r508661_rule

Vulnerability ID: V-206830

Group Title: SRG-NET-000168

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.