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The Cisco router must be configured to encrypt SNMP messages using a FIPS 140-2 approved algorithm.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-215697 | CISC-ND-001140 | SV-215697r961506_rule | Medium |
| 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. |
| STIG | Date |
|---|---|
| Cisco IOS Router NDM Security Technical Implementation Guide | 2024-06-06 |
Details
| Check Text ( C-16891r286053_chk ) |
|---|
| Review the Cisco router configuration to verify that it is compliant with this requirement as shown in the example below. snmp-server group V3GROUP v3 priv read V3READ write V3WRITE snmp-server view V3READ iso included snmp-server view V3WRITE iso included snmp-server host x.x.x.x version 3 auth V3USER Encryption used by the SNMP users can be viewed via the show snmp user command as shown in the example below. R4#show snmp user User name: V3USER Engine ID: 800000090300C2042B540000 storage-type: nonvolatile active Authentication Protocol: SHA Privacy Protocol: AES256 Group-name: V3GROUP If the Cisco router is not configured to encrypt SNMP messages using a FIPS 140-2 approved algorithm, this is a finding. |
| Fix Text (F-16889r286054_fix) |
|---|
| Configure the Cisco router to encrypt SNMP messages using a FIPS 140-2 approved algorithm as shown in the example below. R4(config)#snmp-server group V3GROUP v3 priv read V3READ write V3WRITE R4(config)#snmp-server user V3USER V3GROUP v3 auth sha xxxxxx priv aes 256 xxxxxx |