---
name: "CIS Ubuntu 14.04 LTS - 4.1.1.1 Ensure audit log storage size is configured"
description: "Configure the maximum size of the audit log file to prevent disk space exhaustion"
category: "cis-os-hardening"
version: "2.1.0"
author: "cyberstrike-official"
tags:
  - cis
  - ubuntu
  - ubuntu-14.04
  - level-2
  - not-scored
  - auditd
  - logging
cis_id: "4.1.1.1"
cis_benchmark: "CIS Ubuntu Linux 14.04 LTS Benchmark v2.1.0"
tech_stack:
  - ubuntu
  - linux
cwe_ids: []
chains_with: []
prerequisites: []
severity_boost: "low"
---

# 4.1.1.1 Ensure audit log storage size is configured (Not Scored)

## Profile Applicability

- Level 2 - Server
- Level 2 - Workstation

## 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.

## 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.

## Audit Procedure

Run the following command and ensure output is in compliance with site policy:

```bash
grep max_log_file /etc/audit/auditd.conf
```

## Expected Result

```
max_log_file = <MB>
```

The output should show `max_log_file` set to a value in accordance with site policy.

## Remediation

Set the following parameter in `/etc/audit/auditd.conf` in accordance with site policy:

```bash
max_log_file = <MB>
```

**Notes:** The max_log_file parameter is measured in megabytes.

## Default Value

By default, auditd will max out the log files at 5MB and retain only 4 copies of them.

## References

1. CIS Controls v6.1 - 6.3 Ensure Audit Logging Systems Are Not Subject To Loss

## Profile

- Level 2 - Server
- Level 2 - Workstation