Check: AMLS-L3-000320
Arista MLS DCS-7000 Series RTR STIG:
AMLS-L3-000320
(in versions v1 r3 through v1 r2)
Title
The Arista Multilayer Switch must not enable the RIP routing protocol. (Cat II impact)
Discussion
A rogue router could send a fictitious routing update to convince a site's perimeter router to send traffic to an incorrect or even a rogue destination. This diverted traffic could be analyzed to learn confidential information about the site's network or merely used to disrupt the network's ability to communicate with other networks. This is known as a "traffic attraction attack" and is prevented by configuring neighbor router authentication for routing updates. However, using clear-text authentication provides little benefit since an attacker can intercept traffic and view the authentication key. This would allow the attacker to use the authentication key in an attack. This requirement applies to all IPv4 and IPv6 protocols that are used to exchange routing or packet forwarding information; this includes all Interior Gateway Protocols (such as OSPF, EIGRP, and IS-IS) and Exterior Gateway Protocols (such as BGP), MPLS-related protocols (such as LDP), and Multicast-related protocols.
Check Content
Review the router configuration to determine if RIP is enabled via the "show running-config" command. RIP is disabled by default on an Arista switch and is only enabled when explicitly configured. If a configuration statement enabling RIP is in the Arista Multilayer Switch configuration, this is a finding.
Fix Text
Disable RIP via the "no router rip" command.
Additional Identifiers
Rule ID: SV-75391r1_rule
Vulnerability ID: V-60933
Group Title: SRG-NET-000168-RTR-000077
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000803 |
The information system implements mechanisms for authentication to a cryptographic module that meet the requirements of applicable federal laws, Executive Orders, directives, policies, regulations, standards, and guidance for such authentication. |
Controls
Number | Title |
---|---|
IA-7 |
Cryptographic Module Authentication |