Disable IPv6 Router Advertisements
This setting disables the systems ability to accept router advertisements
[no/yes]
It is recommended that systems not accept router advertisements as they could be tricked into routing traffic to compromised machines. Setting hard routes within the system (usually a single default route to a trusted router) protects the system from bad routes.
Fix:
Set the net.ipv6.conf.all.accept_ra and net.ipv6.conf.default.accept_ra parameter to 0 in /etc/sysctl.conf:
net.ipv6.conf.all.accept_ra=0 net.ipv6.conf.default.accept_ra=0
Modify active kernel parameters to match:
# /sbin/sysctl -w net.ipv6.conf.all.accept_ra=0
# /sbin/sysctl -w net.ipv6.conf.default.accept_ra=0
# /sbin/sysctl -w net.ipv6.route.flush=1
oval:org.secpod.oval:def:55096
SCAP Repo OVAL Definition
2019-06-19