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I - Mission Critical Sensitive

Rules and Groups employed by this XCCDF Profile

  • SRG-NET-000343-RTR-000001

    <GroupDescription></GroupDescription>
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  • The Cisco PE switch providing MPLS Layer 2 Virtual Private Network (L2VPN) services must be configured to authenticate targeted Label Distribution Protocol (LDP) sessions used to exchange virtual circuit (VC) information using a FIPS-approved message authentication code algorithm.

    &lt;VulnDiscussion&gt;LDP provides the signaling required for setting up and tearing down pseudowires (virtual circuits used to transport Layer 2 f...
    Rule Medium Severity
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  • SRG-NET-000205-RTR-000007

    <GroupDescription></GroupDescription>
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  • The Cisco PE switch must be configured to block any traffic that is destined to the IP core infrastructure.

    &lt;VulnDiscussion&gt;IP addresses can be guessed. Core network elements must not be accessible from any external host. Protecting the core from an...
    Rule High Severity
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  • SRG-NET-000205-RTR-000008

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco PE switch must be configured with Unicast Reverse Path Forwarding (uRPF) loose mode enabled on all CE-facing interfaces.

    &lt;VulnDiscussion&gt;The uRPF feature is a defense against spoofing and denial-of-service (DoS) attacks by verifying if the source address of any ...
    Rule Medium Severity
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  • SRG-NET-000193-RTR-000113

    <GroupDescription></GroupDescription>
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  • The Cisco PE switch must be configured to enforce a Quality-of-Service (QoS) policy to provide preferred treatment for mission-critical applications.

    &lt;VulnDiscussion&gt;Different applications have unique requirements and toleration levels for delay, jitter, bandwidth, packet loss, and availabi...
    Rule Low Severity
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  • SRG-NET-000193-RTR-000114

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco P switch must be configured to enforce a Quality-of-Service (QoS) policy to provide preferred treatment for mission-critical applications.

    &lt;VulnDiscussion&gt;Different applications have unique requirements and toleration levels for delay, jitter, bandwidth, packet loss, and availabi...
    Rule Low Severity
    Show

  • SRG-NET-000193-RTR-000112

    <GroupDescription></GroupDescription>
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  • The Cisco switch must be configured to enforce a Quality-of-Service (QoS) policy to limit the effects of packet flooding denial-of-service (DoS) attacks.

    &lt;VulnDiscussion&gt;DoS is a condition when a resource is not available for legitimate users. Packet flooding distributed denial-of-service (DDoS...
    Rule Medium Severity
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  • SRG-NET-000019-RTR-000003

    <GroupDescription></GroupDescription>
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  • The Cisco multicast switch must be configured to disable Protocol Independent Multicast (PIM) on all interfaces that are not required to support multicast routing.

    &lt;VulnDiscussion&gt;If multicast traffic is forwarded beyond the intended boundary, it is possible that it can be intercepted by unauthorized or ...
    Rule Medium Severity
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  • SRG-NET-000019-RTR-000004

    <GroupDescription></GroupDescription>
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  • The Cisco multicast switch must be configured to bind a Protocol Independent Multicast (PIM) neighbor filter to interfaces that have PIM enabled.

    &lt;VulnDiscussion&gt;PIM is a routing protocol used to build multicast distribution trees for forwarding multicast traffic across the network infr...
    Rule Medium Severity
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  • SRG-NET-000019-RTR-000005

    <GroupDescription></GroupDescription>
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  • The Cisco multicast edge switch must be configured to establish boundaries for administratively scoped multicast traffic.

    &lt;VulnDiscussion&gt;If multicast traffic is forwarded beyond the intended boundary, it is possible that it can be intercepted by unauthorized or ...
    Rule Low Severity
    Show

  • SRG-NET-000364-RTR-000114

    <GroupDescription></GroupDescription>
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  • The Cisco multicast Designated switch (DR) must be configured to filter the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) Report messages to allow hosts to join only multicast groups that have been approved by the organization.

    &lt;VulnDiscussion&gt;Real-time multicast traffic can entail multiple large flows of data. Large unicast flows tend to be fairly isolated (i.e., so...
    Rule Low Severity
    Show

  • SRG-NET-000364-RTR-000115

    <GroupDescription></GroupDescription>
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  • The Cisco multicast Designated switch (DR) must be configured to filter the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) Report messages to allow hosts to join a multicast group only from sources that have been approved by the organization.

    &lt;VulnDiscussion&gt;Real-time multicast traffic can entail multiple large flows of data. Large unicast flows tend to be fairly isolated (i.e., so...
    Rule Medium Severity
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  • SRG-NET-000362-RTR-000122

    <GroupDescription></GroupDescription>
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  • The Cisco multicast Designated switch (DR) must be configured to limit the number of mroute states resulting from Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) Host Membership Reports.

    &lt;VulnDiscussion&gt;The current multicast paradigm can let any host join any multicast group at any time by sending an IGMP or MLD membership rep...
    Rule Medium Severity
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  • SRG-NET-000362-RTR-000123

    <GroupDescription></GroupDescription>
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  • The Cisco multicast Designated switch (DR) must be configured to set the shortest-path tree (SPT) threshold to infinity to minimalize source-group (S, G) state within the multicast topology where Any Source Multicast (ASM) is deployed.

    &lt;VulnDiscussion&gt;ASM can have many sources for the same groups (many-to-many). For many receivers, the path via the RP may not be ideal compar...
    Rule Medium Severity
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  • SRG-NET-000205-RTR-000014

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter switch must be configured to restrict it from accepting outbound IP packets that contain an illegitimate address in the source address field via egress filter or by enabling Unicast Reverse Path Forwarding (uRPF).

    &lt;VulnDiscussion&gt;A compromised host in an enclave can be used by a malicious platform to launch cyberattacks on third parties. This is a commo...
    Rule High Severity
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  • SRG-NET-000205-RTR-000015

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter switch must be configured to block all packets with any IP options.

    &lt;VulnDiscussion&gt;Packets with IP options are not fast switched and henceforth must be punted to the switch processor. Hackers who initiate den...
    Rule Medium Severity
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  • SRG-NET-000205-RTR-000016

    <GroupDescription></GroupDescription>
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  • The Cisco PE switch must be configured to ignore or drop all packets with any IP options.

    &lt;VulnDiscussion&gt;Packets with IP options are not fast-switched and therefore must be punted to the switch processor. Hackers who initiate deni...
    Rule Medium Severity
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  • SRG-NET-000512-RTR-000100

    <GroupDescription></GroupDescription>
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  • The Cisco switch must be configured to have Cisco Express Forwarding enabled.

    &lt;VulnDiscussion&gt;The Cisco Express Forwarding (CEF) switching mode replaces the traditional Cisco routing cache with a data structure that mir...
    Rule Medium Severity
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  • SRG-NET-000512-RTR-000012

    <GroupDescription></GroupDescription>
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  • The Cisco switch must be configured to advertise a hop limit of at least 32 in Switch Advertisement messages for IPv6 stateless auto-configuration deployments.

    &lt;VulnDiscussion&gt;The Neighbor Discovery protocol allows a hop limit value to be advertised by routers in a Router Advertisement message being ...
    Rule Low Severity
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  • SRG-NET-000512-RTR-000013

    <GroupDescription></GroupDescription>
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  • The Cisco switch must not be configured to use IPv6 Site Local Unicast addresses.

    &lt;VulnDiscussion&gt;As currently defined, site local addresses are ambiguous and can be present in multiple sites. The address itself does not co...
    Rule Medium Severity
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  • SRG-NET-000512-RTR-000014

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter switch must be configured to suppress Router Advertisements on all external IPv6-enabled interfaces.

    &lt;VulnDiscussion&gt;Many of the known attacks in stateless autoconfiguration are defined in RFC 3756 were present in IPv4 ARP attacks. To mitigat...
    Rule Medium Severity
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  • SRG-NET-000364-RTR-000200

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter switch must be configured to drop IPv6 undetermined transport packets.

    &lt;VulnDiscussion&gt;One of the fragmentation weaknesses known in IPv6 is the undetermined transport packet. This packet contains an undetermined ...
    Rule Medium Severity
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  • SRG-NET-000364-RTR-000201

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter switch must be configured drop IPv6 packets with a Routing Header type 0, 1, or 3-255.

    &lt;VulnDiscussion&gt;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
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  • SRG-NET-000364-RTR-000202

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter switch must be configured to drop IPv6 packets containing a Hop-by-Hop header with invalid option type values.

    &lt;VulnDiscussion&gt;These options are intended to be for the Destination Options header only. The optional and extensible natures of the IPv6 ext...
    Rule Medium Severity
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  • SRG-NET-000364-RTR-000203

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter switch must be configured to drop IPv6 packets containing a Destination Option header with invalid option type values.

    &lt;VulnDiscussion&gt;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
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  • SRG-NET-000364-RTR-000204

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter switch must be configured to drop IPv6 packets containing an extension header with the Endpoint Identification option.

    &lt;VulnDiscussion&gt;The optional and extensible natures of the IPv6 extension headers require higher scrutiny since many implementations do not a...
    Rule Medium Severity
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