BaselineWatch
Desk
Your fleet and your work Fleetyour releases and the hardware they run onTriagewhat needs a decisionWatchlistthe products and platforms you runSaved searchesthe lists you come back to
This instance Sourceswhat is read, how often, under what termsDigestthe daily or weekly summary, and alerts
How it is drawn Appearancethe look and the colour schemeBrandingthe mark this instance wears
Owner sign-in

UBTU-24-102010 Ubuntu 24.04 LTS must initiate session audits at system startup.

DISA STIG library V1R7
All changes in this version
first version loaded CAT II

Maps to AU-14(1) via CCI-001464

Title

Ubuntu 24.04 LTS must initiate session audits at system startup.

Control

Verify Ubuntu 24.04 LTS enables auditing at system startup in GRUB. Check the main GRUB defaults to ensure that auditing is enabled: $ sudo grep -ir GRUB_CMDLINE_LINUX /etc/default/grub /etc/default/grub:GRUB_CMDLINE_LINUX_DEFAULT="audit=1" /etc/default/grub:GRUB_CMDLINE_LINUX="audit=1" If any linux lines do not contain "audit=1", this is a finding. Check the generated GRUB configuration to ensure that the setting is propagated to the bootloader: $ sudo grep "^\s*linux" /boot/grub/grub.cfg linux /vmlinuz-6.8.0-31-generic root=UUID=c92a542f-aee4-4af9-94b2-203624ccb8e3 ro audit=1 quiet splash $vt_handoff linux /vmlinuz-6.8.0-31-generic root=UUID=c92a542f-aee4-4af9-94b2-203624ccb8e3 ro recovery nomodeset dis_ucode_ldr audit=1 If any linux lines do not contain "audit=1", this is a finding. Note: Output details may vary by system.

Discussion

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.

Related controls

CCI-001464

Fix

Configure Ubuntu 24.04 LTS to produce audit records at system startup. Edit the "/etc/default/grub" file and add "audit=1" to the "GRUB_CMDLINE_LINUX" option and to the "GRUB_CMDLINE_LINUX_DEFAULT" option. GRUB_CMDLINE_LINUX_DEFAULT="audit=1" GRUB_CMDLINE_LINUX="audit=1" To update the grub config file, run: $ sudo update-grub