STIGQter: STIG Summary: Juniper EX Series Switches Router Security Technical Implementation Guide Version: 2 Release: 1 Benchmark Date: 24 Jul 2024:

The Juniper router configured for MSDP must limit the amount of source-active messages it accepts on per-peer basis.

DISA Rule

SV-253981r843976_rule

Vulnerability Number

V-253981

Group Title

SRG-NET-000018-RTR-000009

Rule Version

JUEX-RT-000090

Severity

CAT III

CCI(s)

• CCI-001368 - Enforce approved authorizations for controlling the flow of information within the system based on organization-defined information flow control policies.

Weight

10

Fix Recommendation

Configure the MSDP router to limit the amount of source-active messages it accepts from each peer.

set protocols msdp active-source-limit maximum <1..1000000>
set protocols msdp active-source-limit threshold <1..1000000>
set protocols msdp active-source-limit log-warning <percent to log warning>
<additional configuration>
set protocols msdp peer <address> active-source-limit maximum <1..1000000>
set protocols msdp peer <address> active-source-limit threshold <1..1000000>
set protocols msdp peer <address> active-source-limit log-warning <percent to log warning>

Check Contents

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.

[edit protocols]
msdp {
active-source-limit {
maximum <1..1000000>;
threshold <1..1000000>;
log-warning <percent to log warning>;
}
local-address <lo0 address>;
<additional configuration>
peer <address> {
active-source-limit {
maximum <1..1000000>;
threshold <1..1000000>;
log-warning <percent to log warning>;
}
authentication-key "hashed PSK"; ## SECRET-DATA
}
}
Note: Both the global, and the peer limit, are applied to every MSDP peer, and Junos applies the most restrictive limit. The maximum value sets the upper limit for source-active messages and the threshold value determines when Junos begins Random Early Detection (RED) dropping to alleviate congestion. The log-warning value is a percent where Junos begins generating syslog messages.

If the router is not configured to limit the source-active messages it accepts, this is a finding.

Vulnerability Number

V-253981

Documentable

False

Rule Version

JUEX-RT-000090

Severity Override Guidance

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.

[edit protocols]
msdp {
active-source-limit {
maximum <1..1000000>;
threshold <1..1000000>;
log-warning <percent to log warning>;
}
local-address <lo0 address>;
<additional configuration>
peer <address> {
active-source-limit {
maximum <1..1000000>;
threshold <1..1000000>;
log-warning <percent to log warning>;
}
authentication-key "hashed PSK"; ## SECRET-DATA
}
}
Note: Both the global, and the peer limit, are applied to every MSDP peer, and Junos applies the most restrictive limit. The maximum value sets the upper limit for source-active messages and the threshold value determines when Junos begins Random Early Detection (RED) dropping to alleviate congestion. The log-warning value is a percent where Junos begins generating syslog messages.

If the router is not configured to limit the source-active messages it accepts, this is a finding.

Check Content Reference

M

Target Key

5479