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Check: SRG-NET-000343-RTR-000002

Router SRG: SRG-NET-000343-RTR-000002 (in versions v4 r3 through v4 r1)

Title

The Multicast Source Discovery Protocol (MSDP) router must be configured to authenticate all received MSDP packets. (Cat II impact)

Discussion

MSDP peering with customer network routers presents additional risks to the core, whether from a rogue or misconfigured MSDP-enabled router. MSDP password authentication is used to validate each segment sent on the TCP connection between MSDP peers, protecting the MSDP session against the threat of spoofed packets being injected into the TCP connection stream.

Check Content

Review the router configuration to determine if received MSDP packets are authenticated. If the router does not require MSDP authentication, this is a finding.

Fix Text

Ensure all MSDP packets received by an MSDP router are authenticated.

Additional Identifiers

Rule ID: SV-207148r856632_rule

Vulnerability ID: V-207148

Group Title: SRG-NET-000343

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-001958	The information system authenticates an organization-defined list of specific and/or types of devices before establishing a local, remote, or network connection.

Controls

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

Number	Title
IA-3	Device Identification And Authentication