Title

The DataPower Gateway must generate alerts that can be forwarded to the administrators and ISSO when accounts are modified. (Cat II impact)

Discussion

Once an attacker establishes initial access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to simply modify an existing account. Notification of account modification is one method for mitigating this risk. A comprehensive account management process will ensure an audit trail which documents the modification of device administrator accounts and notifies administrators and Information System Security Officers (ISSOs). Such a process greatly reduces the risk that accounts will be surreptitiously modified and provides logging that can be used for forensic purposes. The network device must generate the alert. Notification may be done by a management server.

Check Content

In the DataPower web interface, navigate to Administration >> Access >> SNMP Settings. Verify that "Trap Event Subscriptions" include the Event Subscription codes that indicate account modification: 0x8240001c and 0x8240001f. On the "Trap and Notification Targets" tab, verify that this configuration includes the Remote Host Address and Remote Port of an approved SNMP server that generates alerts that will be forwarded to the administrators and ISSO when account modification events occur. On the Main tab, confirm that the "Administrative state" is set to "enabled". Additionally, confirm that that the run time state (shown at the top of the page after the text "SNMP Settings") indicates in brackets that the SNMP object is in an "up" state. Confirm that when an account is modified, an appropriate 0x8240001c or 0x8240001f "Configuration settings applied" event appears in the DataPower audit log (In the WebGUI go to Status >> View Logs >> Audit Log), and that an appropriate notification is sent by the SNMP server specified on the "Trap and Notification Targets" tab of the DataPower SNMP Settings. If this event message does not appear in the audit log, this is a finding.

Fix Text

In the DataPower web interface, navigate to Administration >> Access >> SNMP Settings. On the Trap Event Subscriptions tab, set to "on" the "Enable Default Event Subscriptions" option >> set to "warning" the "Minimum Priority" option >> configure "Trap Event Subscriptions" to include an Event Subscription that indicates account creation by adding 0x8240001c and 0x8240001f Event Subscriptions. Example log result: "[conf][success][0x8240001c] (admin:default:web-gui:192.168.65.1): user 'TestUser' Configuration settings applied" On the "Trap and Notification Targets" tab, add the Remote Host Address and Remote Port of an approved SNMP server that generates alerts that will be forwarded to the administrators and ISSO when accounts are modified. On the Main tab, set the "Administrative state" to "enabled" >> Click "Save Configuration".

Additional Identifiers

Rule ID: SV-79605r1_rule

Vulnerability ID: V-65115

Group Title: SRG-APP-000292-NDM-000276

Expert Comments

CCIs tied to check.

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