CISC-ND-000460 - The Cisco router must be configured to limit privileges to change the software resident within software libraries.
Changes to any software components of the network device can have significant effects on the overall security of the network. Therefore, only qualified and authorized individuals should be allowed administrative access to the network device for implementing any changes or upgrades. If the network device were to enable non-authorized users to make changes to software libraries, those changes could be implemented without undergoing testing, validation, and approval.
Configure the router to only allow administrators with privilege level '15' access to the file system as shown in the example below. R4(config)#file privilege 15