Title

System audit logs must have mode 0640 or less permissive. (Cat II impact)

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 file(s). # chmod 0640 <audit log file>

Additional Identifiers

Rule ID: SV-45210r1_rule

Vulnerability ID: V-813

Group Title: GEN002700

Expert Comments

CCIs tied to check.

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