STIGQter: STIG Summary: Cisco ACI Router Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 05 Jan 2026:

The Cisco ACI multicast must be configured to filter the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) Report messages to allow hosts to join only multicast groups and only from sources that have been approved by the organization.

DISA Rule

SV-272095r1168413_rule

Vulnerability Number

V-272095

Group Title

SRG-NET-000364-RTR-000114

Rule Version

CACI-RT-000035

Severity

CAT III

CCI(s)

• CCI-002403 - Only allow incoming communications from organization-defined authorized sources routed to organization-defined authorized destinations.

Weight

10

Fix Recommendation

Configure IGMP Snooping.
Note: There are a number of methods for meeting this requirement; however, it is recommended to use filter Destinations via contracts and PIM destination filter route maps when enabling the Bridge domain to participate in IGMP and MLD Snooping.

All but the contract settings can be found at the following GUI path:
Tenants >> {{your_Tenant}} >> Networking >> Bridge Domain >> {{your_Bridge_Domain}} >> Policy >> General

Check Contents

This requirement is only applicable to Source Specific Multicast (SSM) implementation. This requirement is not applicable to Any Source Multicast (ASM), since the filtering is being performed by the rendezvous point switch.

Review the configuration to verify filtering IGMP or MLD Membership Report messages, allowing hosts to join only those groups that have been approved. Navigate to the following location to review the settings:

Tenants >> {{your_Tenant}} >> Networking >> Bridge Domain >> {{your_Bridge_Domain}} >> Policy >> General

If the Cisco ACI is not filtering IGMP or MLD Membership Report messages, this is a finding.

Vulnerability Number

V-272095

Documentable

False

Rule Version

CACI-RT-000035

Severity Override Guidance

This requirement is only applicable to Source Specific Multicast (SSM) implementation. This requirement is not applicable to Any Source Multicast (ASM), since the filtering is being performed by the rendezvous point switch.

Review the configuration to verify filtering IGMP or MLD Membership Report messages, allowing hosts to join only those groups that have been approved. Navigate to the following location to review the settings:

Tenants >> {{your_Tenant}} >> Networking >> Bridge Domain >> {{your_Bridge_Domain}} >> Policy >> General

If the Cisco ACI is not filtering IGMP or MLD Membership Report messages, this is a finding.

Check Content Reference

M

Target Key

5684