Detections
Analytics

UBTU-16-020770 - Successful/unsuccessful uses of the unix_update command must generate an audit record.

Information

Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise.

Satisfies: SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215

Solution

Configure the audit system to generate an audit event for any successful/unsuccessful uses of the 'unix_update' command. Add or update the following rules in the '/etc/audit/audit.rules' file:

-a always,exit -F path=/sbin/unix_update -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-unix-update

The audit daemon must be restarted for the changes to take effect. To restart the audit daemon, run the following command:

# sudo systemctl restart auditd.service

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_CAN_Ubuntu_16-04_LTS_V2R3_STIG.zip

Item Details

Category: AUDIT AND ACCOUNTABILITY, MAINTENANCE

References: 800-53|AU-3, 800-53|AU-3(1), 800-53|AU-12a., 800-53|AU-12c., 800-53|MA-4(1)(a), CAT|II, CCI|CCI-000130, CCI|CCI-000135, CCI|CCI-000169, CCI|CCI-000172, CCI|CCI-002884, Rule-ID|SV-215099r610931_rule, STIG-ID|UBTU-16-020770, STIG-Legacy|SV-90459, STIG-Legacy|V-75779, Vuln-ID|V-215099

Plugin: Unix

Control ID: b18659b82a0b1d90a9ed889d8415549d25ecdfea76546887825b70bf65ae1993