The system must not accept source-routed IPv6 packets.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECSC-1

Associated with: CCI-001551

SV-38828r1_rule The system must not accept source-routed IPv6 packets.

Vulnerability discussion

Source-routed packets allow the source of the packet to suggest routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures. This requirement applies only to the handling of source-routed traffic destined to the system itself, not to traffic forwarded by the system to another, such as when IPv6 forwarding is enabled and the system is functioning as a router.

Check content

# /usr/sbin/no -o ipsrcrouterecv If the value returned is not 0, this is a finding.

Fix text

Configure the system to not accept source-routed IPv6 packets. # /usr/sbin/no -p -o ipsrcrouterecv=0

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