Build and Test AIDE Database

An XCCDF Rule

Description

Run the following command to generate a new database:

$ sudo /usr/sbin/aide --init

By default, the database will be written to the file /var/lib/aide/aide.db.new.gz. Storing the database, the configuration file /etc/aide.conf, and the binary /usr/sbin/aide (or hashes of these files), in a secure location (such as on read-only media) provides additional assurance about their integrity. The newly-generated database can be installed as follows:

$ sudo cp /var/lib/aide/aide.db.new.gz /var/lib/aide/aide.db.gz

To initiate a manual check, run the following command:

$ sudo /usr/sbin/aide --check

If this check produces any unexpected output, investigate.

Rationale

For AIDE to be effective, an initial database of "known-good" information about files must be captured and it should be able to be verified against the installed files.

ID: xccdf_org.ssgproject.content_rule_aide_build_database
Severity: Medium
References: 1 11 12 13 14 15 16 2 3 5 7 8 9

5.10.1.3

APO01.06 BAI01.06 BAI02.01 BAI03.05 BAI06.01 BAI10.01 BAI10.02 BAI10.03 BAI10.05 DSS01.03 DSS03.05 DSS04.07 DSS05.02 DSS05.03 DSS05.05 DSS05.07 DSS06.02 DSS06.06

4.3.4.3.2 4.3.4.3.3 4.3.4.4.4

SR 3.1 SR 3.3 SR 3.4 SR 3.8 SR 4.1 SR 6.2 SR 7.6

A.11.2.4 A.12.1.2 A.12.2.1 A.12.4.1 A.12.5.1 A.12.6.2 A.14.1.2 A.14.1.3 A.14.2.2 A.14.2.3 A.14.2.4 A.14.2.7 A.15.2.1 A.8.2.3

CM-6(a)

DE.CM-1 DE.CM-7 PR.DS-1 PR.DS-6 PR.DS-8 PR.IP-1 PR.IP-3

Req-11.5

11.5.2

SRG-OS-000445-GPOS-00199

CCI-001744 CCI-002696

R76 R79
Updated: over 1 year ago

- name: Gather the package facts
  package_facts:
    manager: auto
  tags:
  - CJIS-5.10.1.3
  - NIST-800-53-CM-6(a)  - PCI-DSS-Req-11.5
  - PCI-DSSv4-11.5.2
  - aide_build_database
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed
  - restrict_strategy

- name: Build and Test AIDE Database - Ensure AIDE Is Installed
  ansible.builtin.package:
    name: '{{ item }}'
    state: present
  with_items:
  - aide
  when: '"kernel" in ansible_facts.packages'
  tags:
  - CJIS-5.10.1.3
  - NIST-800-53-CM-6(a)
  - PCI-DSS-Req-11.5
  - PCI-DSSv4-11.5.2
  - aide_build_database
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed
  - restrict_strategy

- name: Build and Test AIDE Database - Build and Test AIDE Database
  ansible.builtin.command: /usr/sbin/aide --init
  changed_when: true
  when: '"kernel" in ansible_facts.packages'
  tags:
  - CJIS-5.10.1.3
  - NIST-800-53-CM-6(a)
  - PCI-DSS-Req-11.5
  - PCI-DSSv4-11.5.2
  - aide_build_database
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed
  - restrict_strategy

- name: Build and Test AIDE Database - Check Whether the Stock AIDE Database Exists
  ansible.builtin.stat:
    path: /var/lib/aide/aide.db.new.gz
  register: aide_database_stat
  when: '"kernel" in ansible_facts.packages'
  tags:
  - CJIS-5.10.1.3
  - NIST-800-53-CM-6(a)
  - PCI-DSS-Req-11.5
  - PCI-DSSv4-11.5.2
  - aide_build_database
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed
  - restrict_strategy

- name: Build and Test AIDE Database - Stage AIDE Database
  ansible.builtin.copy:
    src: /var/lib/aide/aide.db.new.gz
    dest: /var/lib/aide/aide.db.gz
    backup: true
    remote_src: true
  when:
  - '"kernel" in ansible_facts.packages'
  - (aide_database_stat.stat.exists is defined and aide_database_stat.stat.exists)
  tags:
  - CJIS-5.10.1.3
  - NIST-800-53-CM-6(a)
  - PCI-DSS-Req-11.5
  - PCI-DSSv4-11.5.2
  - aide_build_database
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed
  - restrict_strategy

# Remediation is applicable only in certain platforms
if rpm --quiet -q kernel; then

if ! rpm -q --quiet "aide" ; then
    yum install -y "aide"
fi
/usr/sbin/aide --init
/bin/cp -p /var/lib/aide/aide.db.new.gz /var/lib/aide/aide.db.gz

else
    >&2 echo 'Remediation is not applicable, nothing was done'
fi

Build and Test AIDE Database

Description

Rationale

Remediation - Ansible

Remediation - Shell Script