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The RUCKUS ICX layer 2 switch must have the native VLAN assigned to an ID other than the default VLAN for all 802.1q trunk links.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-273693RCKS-L2S-000260SV-273693r1110996_ruleCCI-000366medium
Description
VLAN hopping can be initiated by an attacker who has access to a switch port belonging to the same VLAN as the native VLAN of the trunk link connecting to another switch that the victim is connected to. If the attacker knows the victim's MAC address, it can forge a frame with two 802.1q tags and a layer 2 header with the destination address of the victim. Since the frame will ingress the switch from a port belonging to its native VLAN, the trunk port connecting to the victim's switch will simply remove the outer tag because native VLAN traffic is to be untagged. The switch will forward the frame on to the trunk link unaware of the inner tag with a VLAN ID of which the victim's switch port is a member.
STIGDate
RUCKUS ICX Layer 2 Switch Security Technical Implementation Guide2025-06-03

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (8) 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.

CFG-01Configuration Management Program
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
MON-01Continuous Monitoring
1.00
MON-01.7File Integrity Monitoring (FIM)
1.00
CFG-02Secure Baseline Configurations
0.50
CFG-02.7Approved Configuration Deviations
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (100) 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-12Session Termination
1.00
AC-16(1)Dynamic Attribute Association
1.00
AC-17(1)Monitoring and Control
1.00
AC-2Account Management
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(11)Usage Conditions
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-24(1)Transmit Access Authorization Information
1.00
AC-25Reference Monitor
1.00

+90 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (2) 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.

3.4.1
1.00
3.4.2
1.00
CCI1 mapping
CCI-000366
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (5) 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
PR.PS-01
1.00
PR.DS-10
0.50
PR.PSPlatform Security
0.50
PR.PS-05
0.50

Who does this work

10 NICE work roles and 9 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-273693r1110996_chk)

Examine the ports associated with the default VLAN. device#show vlans Total PORT-VLAN entries: 2 Maximum PORT-VLAN entries: 1024 Legend: [Stk=Stack-Id, S=Slot] PORT-VLAN 4505, Name DEFAULT-VLAN, Priority level0, On Untagged Ports: (U1/M1) Untagged Ports: (U1/M1) Untagged Ports: (U1/M1) Untagged Ports: (U1/M1) Untagged Ports: (U1/M2) Tagged Ports: None Mac-Vlan Ports: None Monitoring: Disabled device# If any 802.1q trunk interfaces (with tagged VLANs) also have the default VLAN assigned as the native VLAN (i.e., untagged), this is a finding.

Fix Text (F-77689r1110101_fix)

If a trunk port (1/2/1 below) also has the default VLAN assigned as the native VLAN (i.e., untagged), remove that interface from the default VLAN. device# configure terminal device(config)# default-vlan-id 4505 device(config)# vlan 4505 device(config-vlan-4505)# no untag ethernet 1/2/1