STIGQter: STIG Summary: Juniper EX Series Switches Router Security Technical Implementation Guide Version: 2 Release: 1 Benchmark Date: 24 Jul 2024:

The Juniper multicast Designated Router (DR) must be configured to filter the IGMP and MLD Report messages to allow hosts to join a multicast group only from sources that have been approved by the organization.

DISA Rule

SV-254051r844263_rule

Vulnerability Number

V-254051

Group Title

SRG-NET-000364-RTR-000115

Rule Version

JUEX-RT-000790

Severity

CAT II

CCI(s)

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

Weight

10

Fix Recommendation

Configure the DR to filter the IGMP and MLD report messages to allow hosts to join only those multicast groups from sources that have been approved.

set policy-options policy-statement <name> term unauth-sources from source-address-filter <IPv4 address>/<mask> orlonger
set policy-options policy-statement <name> term unauth-sources then reject
set policy-options policy-statement <name> term accept-others then accept

set policy-options policy-statement <name IPv6> term unauth-sources from source-address-filter <IPv6 address>/<prefix> orlonger
set policy-options policy-statement <name IPv6> term unauth-sources then reject
set policy-options policy-statement <name IPv6> term accept-others then accept

set protocols igmp interface <name>.<logical unit> group-policy <policy name>
set protocols mld interface <name>.<logical unit> group-policy <policy name IPv6>

Check Contents

Review the configuration of the DR to verify that it is filtering IGMP or MLD report messages, allowing hosts to only join multicast groups from sources that have been approved.

Note: This requirement is only applicable to Source Specific Multicast (SSM) implementation.

[edit policy-options]
policy-statement <name> {
term unauth-sources {
from {
source-address-filter <IPv4 address>/<mask> orlonger;
}
then reject;
}
term allow-others {
then accept;
}
}
policy-statement <name IPv6> {
term unauth-sources {
from {
source-address-filter <IPv6 address>/<prefix> orlonger;
}
then reject;
}
term allow-others {
then accept;
}
}

[edit protocols]
igmp {
interface <name>/<logical unit> {
group-policy <policy name>;
}
}
mld {
interface <name>/<logical unit> {
group-policy <policy name IPv6>;
}
}

If the DR is not filtering IGMP or MLD report messages, this is a finding.

Vulnerability Number

V-254051

Documentable

False

Rule Version

JUEX-RT-000790

Severity Override Guidance

Review the configuration of the DR to verify that it is filtering IGMP or MLD report messages, allowing hosts to only join multicast groups from sources that have been approved.

Note: This requirement is only applicable to Source Specific Multicast (SSM) implementation.

[edit policy-options]
policy-statement <name> {
term unauth-sources {
from {
source-address-filter <IPv4 address>/<mask> orlonger;
}
then reject;
}
term allow-others {
then accept;
}
}
policy-statement <name IPv6> {
term unauth-sources {
from {
source-address-filter <IPv6 address>/<prefix> orlonger;
}
then reject;
}
term allow-others {
then accept;
}
}

[edit protocols]
igmp {
interface <name>/<logical unit> {
group-policy <policy name>;
}
}
mld {
interface <name>/<logical unit> {
group-policy <policy name IPv6>;
}
}

If the DR is not filtering IGMP or MLD report messages, this is a finding.

Check Content Reference

M

Target Key

5479