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UBTU-24-100110 Ubuntu 24.04 LTS must configure AIDE to perform file integrity checking on the file system if installed.

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

Maps to SI-6 via CCI-002696

Title

Ubuntu 24.04 LTS must configure AIDE to perform file integrity checking on the file system if installed.

Control

Note: If a file integrity tool other than Advanced Intrusion Detection Environment (AIDE) is employed, this requirement is not applicable. Verify AIDE is configured on the system by performing a manual check: $ sudo aide -c /etc/aide/aide.conf --check Example output: ... Start timestamp: 2024-10-30 14:22:38 -0400 (AIDE 0.18.6) AIDE found differences between database and filesystem!! ... If AIDE is being used for system file integrity checking and the command fails, this is a finding.

Discussion

Without verification, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters. This requirement applies to Ubuntu 24.04 LTS performing security function verification/testing and/or systems and environments that require this functionality.

Related controls

CCI-002696

Fix

Initialize the AIDE package (this may take a few minutes): $ sudo aideinit Running aide --init... The new database will need to be renamed to be read by AIDE: $ sudo cp -p /var/lib/aide/aide.db.new /var/lib/aide/aide.db Perform a manual check: $ sudo aide -c /etc/aide/aide.conf --check Example output: ... Start timestamp: 2024-10-30 14:22:38 -0400 (AIDE 0.18.6) AIDE found differences between database and filesystem!! ... Done.