Detections
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GEN007860 - The system must ignore IPv6 ICMP redirect messages - dladm show-link

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.

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.

Solution

Configure the system to ignore IPv6 ICMP redirect messages.
# ndd -set /dev/ip6 ip6_ignore_redirect 1
Also add this command 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-227963r603266_rule, STIG-ID|GEN007860, STIG-Legacy|SV-26937, STIG-Legacy|V-22550, Vuln-ID|V-227963

Plugin: Unix

Control ID: 5d6501ab5b550e80fdc3980ebfee3c92e5340329139b9018676cdbefcff13a85