Details

Configure grub so that processes that are capable of being audited can be audited even if they start up prior to auditd startup.

Rationale:

Audit events need to be captured on processes that start up prior to auditd , so that potential malicious activity cannot go undetected.

Note: This recommendation is designed around the grub2 bootloader, if LILO or another bootloader is in use in your environment enact equivalent settings.

Solution

Edit /etc/default/grub and add audit=1 to GRUB_CMDLINE_LINUX:

GRUB_CMDLINE_LINUX=’audit=1′

Run the following command to update the grub2 configuration:

# grub2-mkconfig -o /boot/grub2/grub.cfg

Supportive Information

The following resource is also helpful.

• https://workbench.cisecurity.org/files/2925

This security hardening control applies to the following category of controls within NIST 800-53: Audit and Accountability.This control applies to the following type of system Unix.

References

• 800-53|AU-3
• 800-53|AU-12
• CSCv7|6.2
• CSCv7|6.3

Source

• Tenable.com/audits