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UBTU-24-900320 Ubuntu 24.04 LTS must generate audit records for successful/unsuccessful uses of the crontab command.

DISA STIG library V1R7
All changes in this version
first version loaded CAT II

Maps to AU-12 via CCI-000172

Title

Ubuntu 24.04 LTS must generate audit records for successful/unsuccessful uses of the crontab command.

Control

Verify an audit event is generated for any successful/unsuccessful use of the "crontab" command with the following command: $ sudo auditctl -l | grep -w crontab -a always,exit -F path=/usr/bin/crontab -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-crontab If the command does not return a line that matches the example or the line is commented out, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier, and the string after it does not need to match the example output above.

Discussion

Without generating audit records specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).

Related controls

CCI-000172

Fix

Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "crontab" command. Add or update the following rules in the "/etc/audit/rules.d/stig.rules" file: -a always,exit -F path=/usr/bin/crontab -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-crontab To reload the rules file, issue the following command: $ sudo augenrules --load