Title

The Unified Communications Session Manager must be configured to use only TLS 1.2 or greater for all TLS and SSL communications. (Cat I impact)

Discussion

Using older unauthorized versions or incorrectly configuring protocol negotiation makes the gateway vulnerable to known and unknown attacks that exploit vulnerabilities in this protocol. This requirement applies to TLS gateways (also known as SSL gateways), web servers, and web applications. Application protocols such as HTTPS and DNSSEC use TLS as the underlying security protocol and thus are in scope for this requirement. NIST SP 800-52 provides guidance for client negotiation on either DOD-only or public-facing servers.

Check Content

Verify the Unified Communications Session Manager is configured to only use TLS 1.2 or greater for all TLS and SSL communications. If the Voice Video Session is not configured to only use TLS 1.2 or greater for all TLS and SSL communications, this is a finding.

Fix Text

Configure the Unified Communications Session Manager to only use TLS 1.2 or greater for all TLS and SSL communications.

Additional Identifiers

Rule ID: SRG-NET-000530-VVSM-00010_rule

Vulnerability ID: SRG-NET-000530-VVSM-00010

Group Title: SRG-NET-000530-VVSM-00010

Expert Comments

CCIs tied to check.

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