cyberstrikeus CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 - Control 4.1.2.1
Profile
- Level: 2 - Server
- Level: 2 - Workstation
- Assessment Status: Automated
Description
Configure the maximum size of the audit log file. Once the log reaches the maximum size, it will be rotated and a new log file will be started.
Notes:
- The
max_log_fileparameter is measured in megabytes - Other methods of log rotation may be appropriate based on site policy. One example is time-based rotation strategies which don't have native support in auditd configurations
- Manual audit of custom configurations should be evaluated for effectiveness and completeness
Rationale
It is important that an appropriate size is determined for log files so that they do not impact the system and audit data is not lost.
Impact
None.
Audit Procedure
Command Line
Run the following command and ensure output is in compliance with site policy:
grep max_log_file /etc/audit/auditd.conf
Expected Result
max_log_file = <MB>
The value should be set in accordance with site policy.
Remediation
Command Line
Set the following parameter in /etc/audit/auditd.conf in accordance with site policy:
max_log_file = <MB>
Default Value
The default max_log_file is 8 MB.
References
- CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 - Section 4.1.2.1
CIS Controls
| Controls Version | Control |
|---|---|
| v7 | 6.4 Ensure adequate storage for logs - Ensure that all systems that store logs have adequate storage space for the logs generated. |