Title

TOSS audit logs must be owned by group root to prevent unauthorized read access. (Cat II impact)

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, SRG-OS-000059-GPOS-00029

Check Content

Verify the audit logs are owned by group root. First, 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 location of the audit log file, check if the audit log is owned by group "root" with the following command: $ sudo ls -l /var/log/audit/audit.log -rw------- 1 root root 908084 Jul 19 23:10 /var/log/audit/audit.log If the audit log is not owned by group "root", this is a finding.

Fix Text

Configure the audit log and audit log directory to be protected from unauthorized read access, by setting the correct owner as "root" with the following command: $ sudo chgrp root [audit_log_file] Replace "[audit_log_file]" to the correct audit log path, by default this location is "/var/log/audit/audit.log." Configure the audit log to be owned by root by configuring the log group in the /etc/audit/auditd.conf file: log_group = root

Additional Identifiers

Rule ID: SV-252980r958434_rule

Vulnerability ID: V-252980

Group Title: SRG-OS-000057-GPOS-00027

Expert Comments

CCIs tied to check.

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