Detections
Analytics

GEN003609 - The system must ignore IPv4 ICMP redirect messages.

Information

ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages modify the host's route table and are unauthenticated. An illicit ICMP redirect message could result in a man-in-the-middle attack.

Solution

Configure the system to not accept IPv4 ICMP redirect messages.

Procedure:
# ndd -set /dev/ip ip_ignore_redirect 1

This command must also be added to a system startup script.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_SOL_10_x86_V2R4_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-227802r603266_rule, STIG-ID|GEN003609, STIG-Legacy|SV-26630, STIG-Legacy|V-22416, Vuln-ID|V-227802

Plugin: Unix

Control ID: de009f3a02f537eaf1acd6ac41c209365f8a2feaf5283c0abef9e12ab2eb6c72