Title

The RUCKUS ICX BGP router must be configured to use a unique key for each autonomous system (AS) that it peers with. (Cat II impact)

Discussion

If the same keys are used between eBGP neighbors, the chance of a hacker compromising any of the BGP sessions increases. It is possible that a malicious user exists in one autonomous system who would know the key used for the eBGP session. This user would then be able to hijack BGP sessions with other trusted neighbors.

Check Content

Review the BGP configuration to determine if it is peering with multiple autonomous systems. Interview the information security systems manager (ISSM) and router administrator to determine if unique keys are being used. keychain AS-xxxx tcp key-id 1 password 2 $Uyt9R3NVfURuXH1a authentication-algorithm aes-128-cmac send-lifetime start 03-05-2024 00:00:00 end 09-01-2024 00:00:00 no accept-ao-mismatch send-id 1 recv-id 1 keychain AS-yyyy tcp key-id 1 password 2 $Uyt9R3123URuXH1a authentication-algorithm aes-128-cmac send-lifetime start 03-05-2024 00:00:00 end 09-01-2024 00:00:00 no accept-ao-mismatch send-id 2 recv-id 2 router bgp local-as xxxx neighbor x.0.0.1 remote-as 10 neighbor x.0.0.1 ao AS-xxxx neighbor y.0.0.1 remote-as 11 neighbor y.0.0.1 as AS-yyyy If unique keys are not being used, this is a finding.

Fix Text

Configure the router to use unique keys for each AS it peers with as shown in the example below: ICX(config)# keychain AS-xxxx ICX(config-keychain-tcp-AS-xxxx)# key 1 ICX(config-keychain-tcp-AS-xxxx-key-1)# authentication-algorithm aes-128-cmac ICX(config-keychain-tcp-AS-xxxx-key-1)# password pw_for_AS-xxxx ICX(config-keychain-tcp-AS-xxxx-key-1)# no accept-ao-mismatch ICX(config-keychain-tcp-AS-xxxx-key-1)# include-tcp-options ICX(config-keychain-tcp-AS-xxxx-key-1)# send-id 1 ICX(config-keychain-tcp-AS-xxxx-key-1)# recv-id 1 ICX(config-keychain-tcp-AS-xxxx-key-1)# accept-lifetime start 03-05-24 10:10:10 end 15552000 ICX(config-keychain-tcp-AS-xxxx-key-1)# send-lifetime start 03-05-24 10:10:10 end 09-01-24 10:10:10 ICX(config)# keychain AS-yyyy ICX(config-keychain-tcp-AS-yyyy)# key 1 ICX(config-keychain-tcp-AS-yyyy-key-1)# authentication-algorithm aes-128-cmac ICX(config-keychain-tcp-AS-yyyy-key-1)# password pw_for_AS-yyyy ICX(config-keychain-tcp-AS-yyyy-key-1)# no accept-ao-mismatch ICX(config-keychain-tcp-AS-yyyy-key-1)# include-tcp-options ICX(config-keychain-tcp-AS-yyyy-key-1)# send-id 2 ICX(config-keychain-tcp-AS-yyyy-key-1)# recv-id 2 ICX(config-keychain-tcp-AS-yyyy-key-1)# accept-lifetime start 03-05-24 10:10:10 end 15552000 ICX(config-keychain-tcp-AS-yyyy-key-1)# send-lifetime start 03-05-24 10:10:10 end 09-01-24 10:10:10 ICX(config)# router bgp ICX(config-bgp-router)# local-as 1001 ICX(config-bgp-router)# neighbor x.0.0.1 remote-as 10 ICX(config-bgp-router)#neighbor x.0.0.1 ao AS-xxxx ICX(config-bgp-router)# neighbor y.0.0.1 remote-as 10 ICX(config-bgp-router)#neighbor y.0.0.1 ao AS-yyyy

Additional Identifiers

Rule ID: SV-273622r1110931_rule

Vulnerability ID: V-273622

Group Title: SRG-NET-000230-RTR-000002

Expert Comments

CCIs tied to check.

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