System audit logs must have mode 0640 or less permissive.

From Oracle Linux 5 Security Technical Implementation Guide

Associated with: CCI-000163

SV-63883r1_rule System audit logs must have mode 0640 or less permissive.

Vulnerability discussion

If a user can write to the audit logs, audit trails can be modified or destroyed and system intrusion may not be detected. System audit logs are those files generated from the audit system and do not include activity, error, or other log files created by application software.

Check content

Perform the following to determine the location of audit logs and then check the mode of the files. Procedure: # grep "^log_file" /etc/audit/auditd.conf|sed s/^[^\/]*//|xargs stat -c %a:%n If any audit log file has a mode more permissive than 0640, this is a finding.

Fix text

Change the mode of the audit log directories/files. # chmod 0750 # chmod 0640

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