Check: CISC-RT-000910
Cisco NX OS Switch RTR STIG:
CISC-RT-000910
(in versions v2 r3 through v1 r0.1)
Title
The Cisco Multicast Source Discovery Protocol (MSDP) switch must be configured to authenticate all received MSDP packets. (Cat II impact)
Discussion
MSDP peering with customer network switches presents additional risks to the core, whether from a rogue or misconfigured MSDP-enabled switch. MSDP password authentication is used to validate each segment sent on the TCP connection between MSDP peers, protecting the MSDP session against the threat of spoofed packets being injected into the TCP connection stream.
Check Content
Review the switch configuration to determine if received MSDP packets are authenticated. ip msdp peer x.1.28.2 remote-as nn ip msdp password peer x.1.28.2 xxxxxxxxxxxx ip msdp peer x.1.28.2 connect-source Ethernet2/3 remote-as 8 ip msdp password x.1.28.2 3 3ec66c90c104ad13 If the switch does not require MSDP authentication, this is a finding.
Fix Text
Configure the switch to authenticate MSDP messages as shown in the following example: SW1(config)# ip msdp password x.1.28.2 xxxxxxxxxxxx
Additional Identifiers
Rule ID: SV-221143r856632_rule
Vulnerability ID: V-221143
Group Title: SRG-NET-000343-RTR-000002
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-001958 |
The information system authenticates an organization-defined list of specific and/or types of devices before establishing a local, remote, or network connection. |
Controls
Number | Title |
---|---|
IA-3 |
Device Identification And Authentication |