STIGQter: STIG Summary: Router Security Requirements Guide Version: 4 Release: 2 Benchmark Date: 23 Apr 2021:

The perimeter router must be configured to drop IPv6 packets containing an extension header with the Endpoint Identification option.

DISA Rule

SV-220151r604135_rule

Vulnerability Number

V-220151

Group Title

SRG-NET-000364

Rule Version

SRG-NET-000364-RTR-000204

Severity

CAT II

CCI(s)

• CCI-002403 - The information system only allows incoming communications from organization-defined authorized sources routed to organization-defined authorized destinations.

Weight

10

Fix Recommendation

Configure the router to drop IPv6 packets containing an option type values of 0x8A (Endpoint Identification) regardless of whether it appears in a Hop-by-Hop or Destination Option header.

Check Contents

This requirement is not applicable for the DODIN Backbone.

Review the router switch configuration and determine if filters are bound to the applicable interfaces to drop IPv6 packets containing an option type values of 0x8A (Endpoint Identification) regardless of whether it appears in a Hop-by-Hop or Destination Option header.

Note: Because hop-by-hop and destination options have the same exact header format, they are combined under the dest-option-type keyword. According to Cisco, since Hop-by-Hop and Destination Option headers have non-overlapping types, dest-option-type to match either can be used. The Hop-by-Hop and Destination Option headers can be filtered via protocol 0 and 60 respectively.

If the router is not configured to drop IPv6 packets containing an extension header with the Endpoint Identification option, this is a finding.

Vulnerability Number

V-220151

Documentable

False

Rule Version

SRG-NET-000364-RTR-000204

Severity Override Guidance

This requirement is not applicable for the DODIN Backbone.

Review the router switch configuration and determine if filters are bound to the applicable interfaces to drop IPv6 packets containing an option type values of 0x8A (Endpoint Identification) regardless of whether it appears in a Hop-by-Hop or Destination Option header.

Note: Because hop-by-hop and destination options have the same exact header format, they are combined under the dest-option-type keyword. According to Cisco, since Hop-by-Hop and Destination Option headers have non-overlapping types, dest-option-type to match either can be used. The Hop-by-Hop and Destination Option headers can be filtered via protocol 0 and 60 respectively.

If the router is not configured to drop IPv6 packets containing an extension header with the Endpoint Identification option, this is a finding.

Check Content Reference

M

Target Key

2917

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