Title

The audit system must be configured to audit the loading and unloading of dynamic kernel modules. (Cat II impact)

Discussion

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.

Check Content

Check /etc/security/audit_control file. # grep flags /etc/security/audit_control If the as element is missing from the flags line, this is a finding.

Fix Text

Edit /etc/security/audit_control and add the as flag to the flag parameter.

Additional Identifiers

Rule ID: SV-227735r603266_rule

Vulnerability ID: V-227735

Group Title: SRG-OS-000062

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.