UBTU-24-901300 Ubuntu 24.04 LTS must be configured so that audit log files are not read or write-accessible by unauthorized users.
All changes in this version
Maps to AU-9 via CCI-000162, CCI-000163
Title
Ubuntu 24.04 LTS must be configured so that audit log files are not read or write-accessible by unauthorized users.
Control
Verify that the audit log files have a mode of "0600" or less permissive. Determine where the audit logs are stored with the following command: $ sudo grep -iw log_file /etc/audit/auditd.conf log_file = /var/log/audit/audit.log Using the path of the directory containing the audit logs, determine if the audit log files have a mode of "0600" or less with the following command: $ sudo stat -c "%n %a" /var/log/audit/* /var/log/audit/audit.log 600 If the audit log files have a mode more permissive than "0600", this is a finding.
Discussion
Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confidentiality. Audit information includes all information (e.g., audit records, audit settings, audit reports) needed to successfully audit operating system activity. Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028
Related controls
CCI-000162, CCI-000163
Fix
Configure the audit log files to have a mode of "0600" or less permissive. Determine where the audit logs are stored with the following command: $ sudo grep -iw log_file /etc/audit/auditd.conf log_file = /var/log/audit/audit.log Using the path of the directory containing the audit logs, configure the audit log files to have a mode of "0600" or less permissive by using the following command: $ sudo chmod 0600 /var/log/audit/*