Title

The SNMP service must use only SNMPv3 or its successors. (Cat II impact)

Discussion

SNMP Versions 1 and 2 are not considered secure. Without the strong authentication and privacy provided by the SNMP Version 3 User-based Security Model (USM), an attacker or other unauthorized users may gain access to detailed system management information and use the information to launch attacks against the system.

Check Content

Determine if the system's SNMP service only uses SNMPv3 or its successors. Consult vendor documentation to determine if earlier versions of SNMP are supported and what configuration is necessary to enable or disable the protocols. Snmpd version 1 was the only version available in AIX versions prior to AIX 5.2. #which snmpd #ls -l <path to snmpd> If the results are not /usr/sbin/snmpdv3e or /usr/sbin/snpdv3ne this is an earlier version of the protocol used by the service, this is a finding.

Fix Text

Configure the system's SNMP service to only use SNMPv3 with encryption or its successors. The SNMP version supporting encryption is an installable fileset on the expansion cd as fileset 'snmp.crypto'. Enable snmpv3 with encryption. # snmpv3_ssw -e

Additional Identifiers

Rule ID: SV-38816r1_rule

Vulnerability ID: V-22447

Group Title: GEN005305

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.