Check: CISC-ND-001140
Cisco IOS XE Switch NDM STIG:
CISC-ND-001140
(in versions v2 r8 through v1 r0.1)
Title
The Cisco switch must be configured to encrypt SNMP messages using a FIPS 140-2 approved algorithm. (Cat II impact)
Discussion
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.
Check Content
Review the Cisco switch 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 switch is not configured to encrypt SNMP messages using a FIPS 140-2 approved algorithm, this is a finding.
Fix Text
Configure the Cisco switch to encrypt SNMP messages using a FIPS 140-2 approved algorithm as shown in the example below: SW4(config)#snmp-server group V3GROUP v3 priv read V3READ write V3WRITE SW4(config)#snmp-server user V3USER V3GROUP v3 auth sha xxxxxx priv aes 256 xxxxxx
Additional Identifiers
Rule ID: SV-220553r879768_rule
Vulnerability ID: V-220553
Group Title: SRG-APP-000395-NDM-000310
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000068 |
The information system implements cryptographic mechanisms to protect the confidentiality of remote access sessions. |
Controls
Number | Title |
---|---|
AC-17 (2) |
Protection Of Confidentiality / Integrity Using Encryption |