The system must not accept source-routed IPv6 packets.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22554	GEN007940	SV-38828r1_rule	ECSC-1	Medium

Description
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.

Description

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.

STIG	Date
AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE	2018-09-18

Details

Check Text ( C-37080r1_chk )
# /usr/sbin/no -o ipsrcrouterecv If the value returned is not 0, this is a finding.

Fix Text (F-32352r1_fix)
Configure the system to not accept source-routed IPv6 packets. # /usr/sbin/no -p -o ipsrcrouterecv=0