The audit system must be configured to audit login, logout, and session initiation.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Part of GEN002800

Associated with IA controls: ECAR-3, ECAR-2, ECAR-1

Associated with: CCI-000126

SV-38856r1_rule The audit system must be configured to audit login, logout, and session initiation.

Vulnerability discussion

If the system is not configured to audit certain activities and write them to an audit log, it is more difficult to detect and track system compromises and damages incurred during a system compromise.

Check content

Check the system's audit configuration. # more /etc/security/audit/events Confirm the following events are configured: USER_Login, USER_Logout, INIT_Start, INIT_End and USER_SU. If any of these events are not present, this is a finding. Check the USER_Login, USER_Logout, INIT_Start, INIT_End, and USER_SU audit events are defined in the audit classes' stanza 'classes:' of the /etc/security/audit/config file. #more /etc/security/audit/config Make note of the audit class(es) the USER_Login, USER_Logout, INIT_Start, INIT_End, and USER_SU events are associated with. If the USER_Login, USER_Logout, INIT_Start, INIT_End, and USER_SU events are not associated with any audit classes in the classes: stanza, this is a finding. Verify the audit class is associated with the default user and all other user ids listed in the users: stanza of the /etc/security/audit/config file. #more /etc/security/audit/config If the class(es) the USER_Login, USER_Logout, INIT_Start, INIT_End, and USER_SU events are not associated with the default user and all the system users in the users: stanza, this is a finding.

Fix text

Edit /etc/security/audit/events and add the USER_Login, USER_Logout, INIT_Start, INIT_End, and USER_SU events to the list of audited events. Edit /etc/security/audit/config and add the USER_Login, USER_Logout, INIT_Start, INIT_End, and USER_SU audit events to an audit class in the classes: stanza. Edit the /etc/security/audit/config and assign the audit classes with the USER_Login, USER_Logout, INIT_Start, INIT_End, and USER_SU events to the all users listed in the users: stanza.

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