I - Mission Critical Sensitive
Rules and Groups employed by this XCCDF Profile
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SRG-NET-000205-RTR-000016
<GroupDescription></GroupDescription>Group -
The Cisco PE router must be configured to drop all packets with any IP options.
<VulnDiscussion>Packets with IP options are not fast switched and therefore must be punted to the router processor. Hackers who initiate deni...Rule Medium Severity -
SRG-NET-000512-RTR-000100
<GroupDescription></GroupDescription>Group -
The Cisco router must be configured to have Cisco Express Forwarding enabled.
<VulnDiscussion>The Cisco Express Forwarding (CEF) switching mode replaces the traditional Cisco routing cache with a data structure that mir...Rule Medium Severity -
SRG-NET-000512-RTR-000012
<GroupDescription></GroupDescription>Group -
The Cisco router must be configured to advertise a hop limit of at least 32 in Router Advertisement messages for IPv6 stateless auto-configuration deployments.
<VulnDiscussion>The Neighbor Discovery protocol allows a hop limit value to be advertised by routers in a Router Advertisement message being ...Rule Low Severity -
SRG-NET-000512-RTR-000013
<GroupDescription></GroupDescription>Group -
The Cisco router must not be configured to use IPv6 Site Local Unicast addresses.
<VulnDiscussion>As currently defined, site local addresses are ambiguous and can be present in multiple sites. The address itself does not co...Rule Medium Severity -
SRG-NET-000512-RTR-000014
<GroupDescription></GroupDescription>Group -
The Cisco perimeter router must be configured to suppress Router Advertisements on all external IPv6-enabled interfaces.
<VulnDiscussion>Many of the known attacks in stateless autoconfiguration are defined in RFC 3756 were present in IPv4 ARP attacks. To mitigat...Rule Medium Severity -
SRG-NET-000364-RTR-000200
<GroupDescription></GroupDescription>Group -
The Cisco perimeter router must be configured to drop IPv6 undetermined transport packets.
<VulnDiscussion>One of the fragmentation weaknesses known in IPv6 is the undetermined transport packet. This packet contains an undetermined ...Rule Medium Severity -
SRG-NET-000364-RTR-000201
<GroupDescription></GroupDescription>Group -
The Cisco perimeter router must be configured drop IPv6 packets with a Routing Header type 0, 1, or 3–255.
<VulnDiscussion>The routing header can be used maliciously to send a packet through a path where less robust security is in place, rather tha...Rule Medium Severity -
SRG-NET-000364-RTR-000202
<GroupDescription></GroupDescription>Group -
The Cisco perimeter router must be configured to drop IPv6 packets containing a Hop-by-Hop header with invalid option type values.
<VulnDiscussion>These options are intended to be for the Destination Options header only. The optional and extensible natures of the IPv6 ext...Rule Medium Severity -
SRG-NET-000364-RTR-000203
<GroupDescription></GroupDescription>Group -
The Cisco perimeter router must be configured to drop IPv6 packets containing a Destination Option header with invalid option type values.
<VulnDiscussion>These options are intended to be for the Hop-by-Hop header only. The optional and extensible natures of the IPv6 extension he...Rule Medium Severity -
SRG-NET-000364-RTR-000204
<GroupDescription></GroupDescription>Group -
The Cisco perimeter router must be configured to drop IPv6 packets containing an extension header with the Endpoint Identification option.
<VulnDiscussion>The optional and extensible natures of the IPv6 extension headers require higher scrutiny since many implementations do not a...Rule Medium Severity
Node 2
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