Title

The Juniper router must be configured to authenticate SNMP messages using a FIPS-validated Keyed-Hash Message Authentication Code (HMAC). (Cat II impact)

Discussion

Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Bidirectional authentication provides stronger safeguards to validate the identity of other devices for connections that are of greater risk. A local connection is any connection with a device communicating without the use of a network. A network connection is any connection with a device that communicates through a network (e.g., local area or wide area network, Internet). A remote connection is any connection with a device communicating through an external network (e.g., the Internet). Because of the challenges of applying this requirement on a large scale, organizations are encouraged to only apply the requirement to those limited number (and type) of devices that truly need to support this capability.

Check Content

Review the router configuration to verify that it is compliant with this requirement as shown in the example below. snmp { v3 { usm { local-engine { user R5_NMS { authentication-sha { authentication-key "$8$vOiLX-Vb2oaUwsJDiHmPz3690BcSevM"; ## SECRET-DATA } } } } target-address NMS_HOST { address x.x.x.x; address-mask 255.255.255.0; tag-list NMS; target-parameters TP1; } target-parameters TP1 { parameters { message-processing-model v3; security-model usm; security-level authentication; security-name R5_NMS; } } notify SEND_TRAPS { type trap; tag NMS; } snmp-community index1 { security-name R5_NMS; tag NMS; } } } If the router is not configured to authenticate SNMP messages using a FIPS-validated HMAC, this is a finding.

Fix Text

Configure the router to authenticate SNMP messages as shown in the example below. [edit snmp] set v3 usm local-engine user R5_NMS authentication-sha authentication-password xxxxxxxxxx set v3 target-address NMS_HOST address x.x.x.x edit v3 target-address NMS_HOST [edit snmp v3 target-address NMS_HOST] set address-mask 255.255.255.0 set tag-list NMS set target-parameters TP1 exit [edit snmp] set v3 target-parameters TP1 parameters message-processing-model v3 set v3 target-parameters TP1 parameters security-model usm set v3 target-parameters TP1 parameters security-name R5_NMS set v3 target-parameters TP1 parameters security-level authentication set v3 snmp-community index1 security-name R5_NMS tag NMS set v3 notify SEND_TRAPS type trap tag NMS

Additional Identifiers

Rule ID: SV-217337r879768_rule

Vulnerability ID: V-217337

Group Title: SRG-APP-000395-NDM-000310

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.