Check: CISC-RT-000940
Cisco IOS XE Router RTR STIG:
CISC-RT-000940
(in versions v2 r9 through v1 r1)
Title
The Cisco Multicast Source Discovery Protocol (MSDP) router must be configured to limit the amount of source-active messages it accepts on a per-peer basis. (Cat III impact)
Discussion
To reduce any risk of a denial of service (DoS) attack from a rogue or misconfigured MSDP router, the router must be configured to limit the number of source-active messages it accepts from each peer.
Check Content
Review the router configuration to determine if it is configured to limit the amount of source-active messages it accepts on a per-peer basis. ip msdp peer x.1.28.2 remote-as nn ip msdp sa-filter in 10.1.28.2 list MSDP_SA_FILTER ip msdp sa-limit X.1.28.2 nnn If the router is not configured to limit the source-active messages it accepts, this is a finding.
Fix Text
Configure the router to limit the amount of source-active messages it accepts from each peer. R8(config)#ip msdp sa-limit x.1.28.2 nnn
Additional Identifiers
Rule ID: SV-216732r531086_rule
Vulnerability ID: V-216732
Group Title: SRG-NET-000018-RTR-000009
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-001368 |
The information system enforces approved authorizations for controlling the flow of information within the system based on organization-defined information flow control policies. |
Controls
Number | Title |
---|---|
AC-4 |
Information Flow Enforcement |