The administrator must ensure that a PIM neighbor filter is bound to all interfaces that have PIM enabled.

From Infrastructure Router Security Technical Implementation Guide

Part of PIM neighbor filter is not configured

SV-40314r1_rule The administrator must ensure that a PIM neighbor filter is bound to all interfaces that have PIM enabled.

Vulnerability discussion

Protocol Independent Multicast (PIM) is a routing protocol used to build multicast distribution tress for forwarding multicast traffic across the network infrastructure. PIM traffic must be limited to only known PIM neighbors by configuring and binding a PIM neighbor filter to those interfaces that have PIM enabled.

Check content

Review the router or multi-layer switch to determine if either IPv4 or IPv6 multicast routing is enabled. If either is enabled, verify that all interfaces enabled for PIM has a neighbor filter to only accept PIM control plane traffic from the documented routers according to the multicast topology diagram.

Fix text

If IPv4 or IPv6 multicast routing is enabled, ensure that all interfaces enabled for PIM has a neighbor filter to only accept PIM control plane traffic from the documented routers according to the multicast topology diagram.

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