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AIX must not process ICMP timestamp requests.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-215429AIX7-00-003134SV-215429r991589_ruleCCI-000366medium
Description
The processing of Internet Control Message Protocol (ICMP) timestamp requests increases the attack surface of the system.
STIGDate
IBM AIX 7.x Security Technical Implementation Guide2026-06-15

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-215429r991589_chk)

From the command prompt, run the following command to check if "ipsec_v4" and "ipsec_v6" devices are active: # lsdev -Cc ipsec The above command should yield the following output: ipsec_v4 Available IP Version 4 Security Extension ipsec_v6 Available IP Version 6 Security Extension If "ipsec_v4" or "ipsec_v6" is not displayed, or it is not in "Available" state, this is a finding. Determine if the system is configured to respond to ICMP Timestamp requests using the following command: # lsfilt Beginning of IPv4 filter rules. Rule 1: Rule action : permit Source Address : 0.0.0.0 Source Mask : 0.0.0.0 Destination Address : 0.0.0.0 Destination Mask : 0.0.0.0 Source Routing : no Protocol : udp Source Port : eq 4001 Destination Port : eq 4001 Scope : both Direction : both Logging control : no Fragment control : all packets Tunnel ID number : 0 Interface : all Auto-Generated : yes Expiration Time : 0 Description : Default Rule Rule 2: *** Dynamic filter placement rule for IKE tunnels *** Logging control : no Rule 3: Rule action : deny Source Address : 0.0.0.0 Source Mask : 0.0.0.0 Destination Address : 0.0.0.0 Destination Mask : 0.0.0.0 Source Routing : yes Protocol : icmp ICMP type : any 0 ICMP code : eq 13 Scope : both Direction : inbound Logging control : no Fragment control : all packets Tunnel ID number : 0 Interface : all Auto-Generated : no Expiration Time : 0 Description : Rule 4: Rule action : deny Source Address : 0.0.0.0 Source Mask : 0.0.0.0 Destination Address : 0.0.0.0 Destination Mask : 0.0.0.0 Source Routing : yes Protocol : icmp ICMP type : eq 14 ICMP code : any 0 Scope : both Direction : outbound Logging control : no Fragment control : all packets Tunnel ID number : 0 Interface : all Auto-Generated : no Expiration Time : 0 Description : Rule 0: Rule action : permit Source Address : 0.0.0.0 Source Mask : 0.0.0.0 Destination Address : 0.0.0.0 Destination Mask : 0.0.0.0 Source Routing : yes Protocol : all Source Port : any 0 Destination Port : any 0 Scope : both Direction : both Logging control : no Fragment control : all packets Tunnel ID number : 0 Interface : all Auto-Generated : no Expiration Time : 0 Description : Default Rule End of IPv4 filter rules. If there is no rule blocking ICMP packet type of "13" and ICMP packet type of "14" (rule #3 and rule #4 above), this is a finding.

Fix Text (F-16625r294739_fix)

From the command prompt, run the following commands to create and activate "ipsec_v4" and "ipsec_v6" devices: # mkdev -l ipsec -t 4 # mkdev -l ipsec -t 6 Run the following commands to create 2 IPsec rules to block the ICMP timestamp request and reply: # genfilt -v 4 -a D -s 0 -m 0 -d 0 -M 0 -c icmp -O eq -P 13 -r B -w I -i all # genfilt -v 4 -a D -s 0 -m 0 -d 0 -M 0 -c icmp -o eq -p 14 -r B -w O -i all From the command prompt, run the following command to activate all the filter rules in the rule database: # mkfilt -u