Uninstall nginx Package

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Description

The nginx package can be removed with the following command:


$ apt-get remove nginx

Rationale

If there is no need to make the web server software available, removing it provides a safeguard against its activation.

Remediation

Shell script

The following script can be run on the host to remediate the issue.

#!/bin/bash

# CAUTION: This remediation script will remove nginx
#	   from the system, and may remove any packages
#	   that depend on nginx. Execute this
#	   remediation AFTER testing on a non-production
#	   system!

DEBIAN_FRONTEND=noninteractive apt-get remove -y "nginx"

Ansible playbook

The following playbook can be run with Ansible to remediate the issue.

- name: Ensure nginx is removed
  package:
    name: nginx
    state: absent
  tags:
  - NIST-800-53-CM-6(a)
  - NIST-800-53-CM-7(a)
  - NIST-800-53-CM-7(b)
  - disable_strategy
  - low_complexity
  - low_disruption
  - no_reboot_needed
  - package_nginx_removed
  - unknown_severity