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The Dell OS10 multicast Rendezvous Point (RP) router must be configured to filter Protocol Independent Multicast (PIM) Join messages received from the Designated Router (DR) for any undesirable multicast groups.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-269866OS10-RTR-000230SV-269866r1051983_ruleCCI-001414low
Description
Real-time multicast traffic can entail multiple large flows of data. An attacker can flood a network segment with multicast packets, over-using the available bandwidth and thereby creating a denial-of-service (DoS) condition. Hence, it is imperative that join messages are only accepted for authorized multicast groups.
STIGDate
Dell OS10 Switch Router Security Technical Implementation Guide2024-12-11

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (17) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AST-04Network Diagrams & Data Flow Diagrams (DFDs)
1.00
AST-04.2Control Applicability Boundary Graphical Representation
1.00
CFG-02Secure Baseline Configurations
1.00
CRY-01Use of Cryptographic Controls
1.00
DCH-01Data Protection
1.00
DCH-19Geographic Location of Data
1.00
END-01Endpoint Device Management (EDM)
1.00
END-04Malicious Code Protection (Anti-Malware)
1.00
END-06Endpoint File Integrity Monitoring (FIM)
1.00
IAC-21Least Privilege
1.00

+7 more (top 10 by confidence shown)

NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (7) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-3Access Enforcement
1.00
AC-4Information Flow Enforcement
1.00
AC-6(9)Log Use of Privileged Functions
1.00
AU-12Audit Record Generation
1.00
CM-7Least Functionality
1.00
SC-5Denial-of-service Protection
1.00
SC-7(5)Deny by Default — Allow by Exception
1.00
NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.1.3
1.00
CCI1 mapping
CCI-001414
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (4) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

DE.CM-09
1.00
ID.AM-03
1.00
PR.DS-10
1.00
PR.IR-01
1.00

Who does this work

18 NICE work roles and 10 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-269866r1051983_chk)

Verify the RP router is configured to filter PIM join messages for any undesirable multicast groups. ! interface vlan100 no shutdown ip pim sparse-mode ip pim join-filter PIM_JOINFILTER ! ip access-list PIM_JOINFILTER seq 10 permit ip 10.10.10.0/24 226.1.1.0/24 seq 20 permit ip any 225.1.1.0/24 If the RP is not configured to filter join messages received from the DR for any undesirable multicast groups, this is a finding.

Fix Text (F-73800r1051982_fix)

Configure the RP to filter PIM join messages for any undesirable multicast groups. Step 1: Configure an ACL that identifies which groups are allowed to join. OS10(config)# ip access-list PIM_JOINFILTER OS10(config-ipv4-acl)# permit ip 10.10.10.0/24 226.1.1.0/24 OS10(config-ipv4-acl)# permit ip any 225.1.1.0/24 Step 2: Configure a PIM join filter on the PIM interfaces. OS10(config)# interface ethernet 1/1/1 OS10(conf-if-eth1/1/1)# ip pim join-filter PIM_JOINFILTER NOTES: * Dell Technologies recommends not using the IP PIM join-filter command on an interface between a source and the RP router. Using this command in this scenario could cause problems with the PIM-SM source registration process resulting in excessive traffic being sent to the CPU of both the RP and PIM DR of the source. Excessive traffic generates when the join process from the RP back to the source is blocked due to a new source group being permitted in the join-filter. This results in the new source becoming stuck in registering on the DR and the continuous generation of UDP-encapsulated registration messages between the DR and RP routers which are sent to the CPU. * Do not to configure a PIM join-filter on a source connected interface (IIF) on first hop router (FHR) node. Applying PIM join-filter with the rule, deny ip any any might block creation of the S,G entries. * When configuring a join filter, it applies for both incoming and outgoing joins. There is no option to specify in or out parameters while configuring a join filter.