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The Dell OS10 Router must be configured to drop all fragmented Internet Control Message Protocol (ICMP) packets destined to itself.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-269873OS10-RTR-000390SV-269873r1052004_ruleCCI-001097medium
Description
Fragmented ICMP packets can be generated by hackers for denial-of-service (DoS) attacks such as Ping O' Death and Teardrop. It is imperative that all fragmented ICMP packets are dropped.
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 (18) 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-02Secure Baseline Configurations
1.00
CRY-01Use of Cryptographic Controls
1.00
CRY-01.1Alternate Physical Protection
1.00
CRY-03Transmission Confidentiality
1.00
CRY-04Transmission Integrity
1.00
CRY-05Encrypting Data At Rest
1.00
DCH-01Data Protection
1.00
IAC-21Least Privilege
1.00
MON-01Continuous Monitoring
1.00
MON-01.1Intrusion Detection & Prevention Systems (IDS & IPS)
1.00

+8 more (top 10 by confidence shown)

NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (10) 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.

CM-6Configuration Settings
1.00
SC-24Fail in Known State
1.00
SC-47Alternate Communications Paths
1.00
SC-5Denial-of-service Protection
1.00
SC-7Boundary Protection
1.00
SC-7(11)Restrict Incoming Communications Traffic
1.00
SC-7(29)Separate Subnets to Isolate Functions
1.00
SC-7(5)Deny by Default — Allow by Exception
1.00
SI-4System Monitoring
1.00
SI-4(11)Analyze Communications Traffic Anomalies
1.00
NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (3) 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.

3.13.1
1.00
3.13.2
1.00
3.13.5
1.00
CCI1 mapping
CCI-001097
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-01
1.00
PR.DS-01
1.00
PR.DS-02
1.00
PR.DS-10
1.00
PR.IR-01
1.00

Who does this work

15 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-269873r1052004_chk)

Review the access control list (ACL) for the control plane receive path. Verify that it will drop all fragmented ICMP packets destined to itself. Step 1: Review the router configuration to verify that an ACL is configured that drops fragmented ICMP packets. ! ip access-list FILTER_FRAGMENTED_ICMP seq 10 deny icmp any any log fragment ... seq 20 permit ip any any Step 2: Examine the configuration to verify the ACL above is applied to packets destined to the control plane. ! control-plane ip access-group FILTER_FRAGMENTED_ICMP data in Note: As shown above, OS10 can filter fragmented packets that arrive on the front panel data ports. OS10 does not support filtering fragmented packets arriving on the OOBM management ethernet interface. If the router is not configured with a receive-path filter to drop all fragmented ICMP packets, this is a finding.

Fix Text (F-73807r1052003_fix)

Ensure all routers have their receive path filter configured to drop all fragmented ICMP packets. Step 1: Configure a control-plane ACL that drops fragmented ICMP packets. OS10(config)# ip access-list FILTER_FRAGMENTED_ICMP OS10(config-ipv4-acl)# seq 10 deny icmp any any log fragment OS10(config-ipv4-acl)# seq 20 permit ip any any Step 2: Apply the ACL above to the control-plane. OS10(config)# control-plane OS10(config-control-plane)# ip access-group FILTER_FRAGMENTED_ICMP data in