The Multicast Source Discovery Protocol (MSDP) router must be configured to only accept MSDP packets from known MSDP peers.

Associated with: CCI-002403

SV-93045r1_rule The Multicast Source Discovery Protocol (MSDP) router must be configured to only accept MSDP packets from known MSDP peers.

Vulnerability discussion

MSDP peering with customer network routers presents additional risks to the DISN Core, whether from a rogue or misconfigured MSDP-enabled router. To guard against an attack from malicious MSDP traffic, the receive path or interface filter for all MSDP-enabled RP routers must be configured to only accept MSDP packets from known MSDP peers.

Check content

Review the router configuration to determine if there is a receive path or interface filter to only accept MSDP packets from known MSDP peers. If the router is not configured to only accept MSDP packets from known MSDP peers, this is a finding.

Fix text

Ensure the receive path or interface filter for all MSDP routers only accepts MSDP packets from known MSDP peers.

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