Title

Amazon Linux 2023 must audit all uses of the shutdown command. (Cat II impact)

Discussion

Misuse of the shutdown command may cause availability issues for the system.

Check Content

Verify Amazon Linux 2023 is configured to audit the execution of the "shutdown" command with the following command: $ sudo auditctl -l | grep shutdown -a always,exit -F path=/usr/sbin/shutdown -F perm=x -F auid>=1000 -F auid!=unset -k privileged-shutdown If the command does not return a line, or the line is commented out, this is a finding.

Fix Text

Configure Amazon Linux 2023 so that the audit system generates an audit event for any successful/unsuccessful uses of the "shutdown" command by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/sbin/shutdown -F perm=x -F auid>=1000 -F auid!=unset -k privileged-shutdown To load the rules to the kernel immediately, use the following command: $ sudo augenrules --load

Additional Identifiers

Rule ID: SV-274100r1120288_rule

Vulnerability ID: V-274100

Group Title: SRG-OS-000477-GPOS-00222

Expert Comments

CCIs tied to check.

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