The audit system must be configured to audit the loading and unloading of dynamic kernel modules -/sbin/modprobe.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-29286	GEN002825-4	SV-64429r1_rule		Medium

Description
Actions concerning dynamic kernel modules must be recorded as they are substantial events. Dynamic kernel modules can increase the attack surface of a system. A malicious kernel module can be used to substantially alter the functioning of a system, often with the purpose of hiding a compromise from the SA.

STIG	Date
Oracle Linux 5 Security Technical Implementation Guide	2020-02-25

Details

Check Text ( C-52819r1_chk )
Determine if the /sbin/modprobe file is audited. # cat /etc/audit/audit.rules | grep "/sbin/modprobe" If the result does not start with "-w" and contain "-p x", this is a finding.

Fix Text (F-55001r1_fix)
The use of audit keys consistent with the provided example is encouraged to provide for uniform audit logs, however omitting the audit key or using an alternate audit key is not a finding. Procedure: -w /sbin/modprobe -p x Restart the auditd service. # service auditd restart