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Configure AIDE to Verify the Audit Tools

An XCCDF Rule

Description

The operating system file integrity tool must be configured to protect the integrity of the audit tools.

Rationale

Protecting the integrity of the tools used for auditing purposes is a critical step toward ensuring the integrity of audit information. Audit information includes all information (e.g., audit records, audit settings, and audit reports) needed to successfully audit information system activity. Audit tools include but are not limited to vendor-provided and open-source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators. It is not uncommon for attackers to replace the audit tools or inject code into the existing tools to provide the capability to hide or erase system activity from the audit logs. To address this risk, audit tools must be cryptographically signed to provide the capability to identify when the audit tools have been modified, manipulated, or replaced. An example is a checksum hash of the file or files.

ID
xccdf_org.ssgproject.content_rule_aide_check_audit_tools
Severity
Medium
References
Updated



Remediation - Ansible

- name: Ensure aide is installed
  package:
    name: '{{ item }}'
    state: present
  with_items:
  - aide

Remediation - Shell Script

# Remediation is applicable only in certain platforms
if [ ! -f /.dockerenv ] && [ ! -f /run/.containerenv ]; then

if ! rpm -q --quiet "aide" ; then
    yum install -y "aide"
fi