Disable the tftp_home_dir SELinux Boolean

An XCCDF Rule

Description

By default, the SELinux boolean tftp_home_dir is disabled. If this setting is enabled, it should be disabled. To disable the tftp_home_dir SELinux boolean, run the following command:

$ sudo setsebool -P tftp_home_dir off

ID: xccdf_org.ssgproject.content_rule_sebool_tftp_home_dir
Severity: Medium
Updated: about 1 year ago

- name: Disable the tftp_home_dir SELinux Boolean - Ensure python3-libsemanage Installed
  package:
    name: python3-libsemanage
    state: present
  when: ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
  tags:  - enable_strategy
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed
  - sebool_tftp_home_dir
- name: XCCDF Value var_tftp_home_dir # promote to variable
  set_fact:
    var_tftp_home_dir: !!str <xccdf-1.2:sub xmlns:xccdf-1.2="http://checklists.nist.gov/xccdf/1.2" idref="xccdf_org.ssgproject.content_value_var_tftp_home_dir" use="legacy"/>
  tags:
    - always

- name: Disable the tftp_home_dir SELinux Boolean - Set SELinux Boolean tftp_home_dir
    Accordingly
  seboolean:
    name: tftp_home_dir
    state: '{{ var_tftp_home_dir }}'
    persistent: true
  when:
  - ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
  - ansible_facts.selinux.status == 'enabled'
  tags:
  - enable_strategy
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed
  - sebool_tftp_home_dir

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

if ! rpm -q --quiet "python3-libsemanage" ; then
    dnf install -y "python3-libsemanage"
fi

if selinuxenabled; then

    var_tftp_home_dir='<xccdf-1.2:sub xmlns:xccdf-1.2="http://checklists.nist.gov/xccdf/1.2" idref="xccdf_org.ssgproject.content_value_var_tftp_home_dir" use="legacy"/>'

    setsebool -P tftp_home_dir $var_tftp_home_dir

else
    echo "Skipping remediation, SELinux is disabled";
    false
fi

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

Disable the tftp_home_dir SELinux Boolean

Description

Remediation - Ansible

Remediation - Shell Script