Arista Multilayer Switches used for nonlocal maintenance sessions must implement cryptographic mechanisms to protect the integrity of nonlocal maintenance and diagnostic communications.

From Arista MLS DCS-7000 Series NDM Security Technical Implementation Guide

Associated with: CCI-002890

SV-75327r1_rule Arista Multilayer Switches used for nonlocal maintenance sessions must implement cryptographic mechanisms to protect the integrity of nonlocal maintenance and diagnostic communications.

Vulnerability discussion

This requires the use of secure protocols instead of their unsecured counterparts, such as SSH instead of telnet, SCP instead of FTP, and HTTPS instead of HTTP.

Check content

Determine if the network device uses secure protocols instead of their unsecured counterparts. If any unsecured maintenance protocols are in use (e.g., telnet, FTP, HTTP) and these protocols are not wrapped in a secure tunnel, this is a finding. Validate by checking that unsecure protocols are either disabled or wrapped in SSH tunnels. Executing a "show run" command will provide a means to validate this config. From the output of this command, verify that there is no statement enabling telnet, there is no statement enabling FTP, and there is no statement enabling the API, or the API is configured to use only HTTPS.

Fix text

Configure the network device to use secure protocols instead of their unsecured counterparts. Configuration Example: Disable unsecure protocols. configure management telnet shutdown exit management api http-commands no protocol http protocol https exit Other protocols (FTP) can be denied using AAA and RBAC. For connections that require use of these maintenance protocols, creation of SSH tunnels can fulfill this security requirement. This is summarized here and available at length in the Common Criteria guidance document. Configuration Example: management ssh tunnel NEW local port 514 ssh-server syslogServer user authuser port 22 remote host localhost port 514 no shutdown

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