{"description": "The audit system should have an action setup in the event the internal event queue becomes full.\nTo setup an overflow action edit <tt>/etc/audit/auditd.conf</tt>. Set <tt>overflow_action</tt>\nto one of the following values: <tt>syslog</tt>, <tt>single</tt>, <tt>halt</tt>.", "rationale": "The audit system should have an action setup in the event the internal event queue becomes full\nso that no data is lost.", "severity": "medium", "references": {"nist": ["AU-4(1)"], "srg": ["SRG-OS-000342-GPOS-00133", "SRG-OS-000479-GPOS-00224"]}, "control_references": {}, "components": [], "identifiers": {}, "ocil_clause": "auditd overflow action is not set correctly", "ocil": "Verify the audit system is configured to take an appropriate action when the internal event queue is full:\n<pre>$ sudo grep -i overflow_action /etc/audit/auditd.conf</pre>\n\nThe output should contain <tt>overflow_action = syslog</tt>\n\nIf the value of the \"overflow_action\" option is not set to <tt>syslog</tt>,\n<tt>single</tt>, <tt>halt</tt> or the line is commented out, ask the System Administrator\nto indicate how the audit logs are off-loaded to a different system or media.", "oval_external_content": null, "fixtext": "Configure Ubuntu 22.04 to take an appropriate action when the internal audit event queue is full.\n\nAdd or edit the following line in \"/etc/audit/auditd.conf\":\n\noverflow_action = syslog\n\nThe auditd daemon needs to be restarted in order for changes to take effect.", "checktext": "", "vuldiscussion": "", "srg_requirement": "Ubuntu 22.04 must take an action when the internal audit event queue is full.", "warnings": [], "conflicts": [], "requires": [], "policy_specific_content": {"stig": {"srg_requirement": "Ubuntu 22.04 must take appropriate action when the internal event queue is full.", "vuldiscussion": "The audit system should have an action setup in the event the internal event queue becomes full so that no data is lost.  Information stored in one location is vulnerable to accidental or incidental deletion or alteration.\n\nOffloading is a common process in information systems with limited audit storage capacity.", "checktext": "Verify that Ubuntu 22.04 audit system is configured to take an appropriate action when the internal event queue is full:\n\n$ sudo grep -i overflow_action /etc/audit/auditd.conf\n\noverflow_action = syslog\n\nIf the value of the \"overflow_action\" option is not set to \"syslog\", \"single\", \"halt\" or the line is commented out, ask the system administrator (SA) to indicate how the audit logs are offloaded to a different system or media.\n\nIf there is no evidence that the transfer of the audit logs being offloaded to another system or media takes appropriate action if the internal event queue becomes full, this is a finding.", "fixtext": "Edit the /etc/audit/auditd.conf file and add or update the \"overflow_action\" option:\n\noverflow_action = syslog\n\nThe audit daemon must be restarted for changes to take effect."}}, "platform": null, "platforms": [], "sce_metadata": {}, "inherited_platforms": ["system_with_kernel", "package[audit]"], "cpe_platform_names": [], "inherited_cpe_platform_names": ["package_audit", "system_with_kernel"], "bash_conditional": null, "fixes": {}, "title": "Appropriate Action Must be Setup When the Internal Audit Event Queue is Full", "definition_location": "/aptdata/openscap/scap-security-guide/linux_os/guide/auditing/configure_auditd_data_retention/auditd_overflow_action/rule.yml", "template": null}