STIGQter: STIG Summary: Cisco IOS XR Router RTR Security Technical Implementation Guide Version: 2 Release: 1 Benchmark Date: 23 Oct 2020:

The Cisco BGP router must be configured to use a unique key for each autonomous system (AS) that it peers with.

DISA Rule

SV-217008r531087_rule

Vulnerability Number

V-217008

Group Title

SRG-NET-000230-RTR-000002

Rule Version

CISC-RT-000480

Severity

CAT II

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.
• CCI-002205 - The information system uniquely identifies and authenticates source by organization, system, application, and/or individual for information transfer.

Weight

10

Fix Recommendation

Configure the router to use unique keys for each AS that it peers with as shown in the example below.

RP/0/0/CPU0:R2(config)#router bgp n
RP/0/0/CPU0:R2(config-bgp)#neighbor x.1.23.3
RP/0/0/CPU0:R2(config-bgp-nbr)#keychain YYY_KEY_CHAIN
RP/0/0/CPU0:R2(config-bgp-nbr)#neighbor x.1.24.4
RP/0/0/CPU0:R2(config-bgp-nbr)#keychain ZZZ_KEY_CHAIN
RP/0/0/CPU0:R2(config-bgp-nbr)#end

Check Contents

Review the BGP configuration to determine if it is peering with multiple autonomous systems. Interview the ISSM and router administrator to determine if unique keys are being used.

router bgp n
address-family ipv4 unicast
!
neighbor x.1.23.3
remote-as y
keychain YYY_KEY_CHAIN
ttl-security
address-family ipv4 unicast
!
!
neighbor x.1.24.4
remote-as z
keychain ZZZ_KEY_CHAIN
ttl-security
address-family ipv4 unicast
!
!

If unique keys are not being used, this is a finding.

Vulnerability Number

V-217008

Documentable

False

Rule Version

CISC-RT-000480

Severity Override Guidance

Review the BGP configuration to determine if it is peering with multiple autonomous systems. Interview the ISSM and router administrator to determine if unique keys are being used.

router bgp n
address-family ipv4 unicast
!
neighbor x.1.23.3
remote-as y
keychain YYY_KEY_CHAIN
ttl-security
address-family ipv4 unicast
!
!
neighbor x.1.24.4
remote-as z
keychain ZZZ_KEY_CHAIN
ttl-security
address-family ipv4 unicast
!
!

If unique keys are not being used, this is a finding.

Check Content Reference

M

Target Key

4029

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