V-274167

Discussion

Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. If auditing is enabled late in the startup process, the actions of some startup processes may not be audited. Some audit systems also maintain state information only available if auditing is enabled before a given process is created. 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, SRG-OS-000473-GPOS-00218, SRG-OS-000254-GPOS-00095

Check Content

Verify Amazon Linux 2023 is configured so that GRUB 2 enables auditing of processes that start prior to the audit daemon with the following commands:

Check that the current GRUB 2 configuration enables auditing:

$ sudo grubby --info=ALL | grep args | grep -v 'audit=1'

If any output is returned, this is a finding.

Check that auditing is enabled by default to persist in kernel updates: 

$ grep audit /etc/default/grub
GRUB_CMDLINE_LINUX="audit=1"

If "audit" is not set to "1", is missing, or is commented out, this is a finding.