The Cisco router must be configured to encrypt SNMP messages using a FIPS 140-2 approved algorithm.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-216539 | SRG-APP-000395-NDM-000310 | CISC-ND-001140 | SV-216539r961506_rule | 2025-02-27 | 3 |
| Description |
|---|
| Without the strong encryption that is provided by the SNMP Version 3 User-based Security Model (USM), an unauthorized user can gain access to network management information that can be used to create a network outage. |
| ℹ️ Check |
|---|
| Review the Cisco router configuration to verify that it is compliant with this requirement as shown in the example below. snmp-server host x.x.x.x traps version 3 auth V3USER snmp-server user V3USER V3GROUP v3 auth sha encrypted 110B1607150B snmp-server view V3READ iso included snmp-server view V3WRITE iso included snmp-server group V3GROUP v3 auth read V3READ write V3WRITE If the Cisco router is not configured to encrypt SNMP messages using a FIPS 140-2 approved algorithm, this is a finding. |
| ✔️ Fix |
|---|
| Configure the Cisco router to encrypt SNMP messages using a FIPS 140-2 approved algorithm as shown in the example below. RP/0/0/CPU0:R3(config)#snmp-server group V3GROUP v3 auth read V3READ write V3WRITE RP/0/0/CPU0:R3(config)#snmp-server user V3USER V3GROUP v3 auth sha xxxxxx priv aes 256 xxxxxx RP/0/0/CPU0:R3(config)#snmp-server view V3READ iso included RP/0/0/CPU0:R3(config)#snmp-server view V3WRITE iso included RP/0/0/CPU0:R3(config)#snmp-server host x.x.x.x version 3 auth V3USER |