Vulnerability Discussion

Without generating audit records that are 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).

Check

Verify if Ubuntu 22.04 LTS is configured to audit the execution of the module management program "modprobe" with the following command:

$ sudo auditctl -l | grep /sbin/modprobe
-w /sbin/modprobe -p x -k modules

If the command does not return a line, or the line is commented out, this is a finding.

Note: The "-k" value is arbitrary and can be different from the example output above.

Fix

Configure Ubuntu 22.04 LTS to audit the execution of the module management program "modprobe".

Add or modify the following line in the "/etc/audit/rules.d/stig.rules" file:

-w /sbin/modprobe -p x -k modules

To reload the rules file, issue the following command:

$ sudo augenrules --load

Note: The "-k " at the end of the line gives the rule a unique meaning to help during an audit investigation. The does not need to match the example above.