Disable Quagga Service

An XCCDF Rule

Description

The zebra service can be disabled with the following command:

$ sudo systemctl mask --now zebra.service

Rationale

Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If routing daemons are used when not required, system network information may be unnecessarily transmitted across the network.

ID: xccdf_org.ssgproject.content_rule_service_zebra_disabled
Severity: Medium
References: 12 15 8

APO13.01 DSS05.02

CCI-000366

164.308(a)(4)(i) 164.308(b)(1) 164.308(b)(3) 164.310(b) 164.312(e)(1) 164.312(e)(2)(ii)

SR 3.1 SR 3.5 SR 3.8 SR 4.1 SR 4.3 SR 5.1 SR 5.2 SR 5.3 SR 7.1 SR 7.6

A.13.1.1 A.13.2.1 A.14.1.3

CM-6(a) CM-7(a) CM-7(b)

PR.PT-4

SRG-OS-000480-GPOS-00227
Updated: about 1 year ago


[customizations.services]
disabled = ["zebra"]

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

SYSTEMCTL_EXEC='/usr/bin/systemctl'
"$SYSTEMCTL_EXEC" stop 'zebra.service'
"$SYSTEMCTL_EXEC" disable 'zebra.service'"$SYSTEMCTL_EXEC" mask 'zebra.service'
# Disable socket activation if we have a unit file for it
if "$SYSTEMCTL_EXEC" -q list-unit-files zebra.socket; then
    "$SYSTEMCTL_EXEC" stop 'zebra.socket'
    "$SYSTEMCTL_EXEC" mask 'zebra.socket'
fi
# The service may not be running because it has been started and failed,
# so let's reset the state so OVAL checks pass.
# Service should be 'inactive', not 'failed' after reboot though.
"$SYSTEMCTL_EXEC" reset-failed 'zebra.service' || true

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

- name: Block Disable service zebra
  block:

  - name: Disable service zebra
    block:
    - name: Disable service zebra
      systemd:
        name: zebra.service
        enabled: 'no'
        state: stopped
        masked: 'yes'
    rescue:

    - name: Intentionally ignored previous 'Disable service zebra' failure, service
        was already disabled
      meta: noop
  when: ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
  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
  - medium_severity
  - no_reboot_needed
  - service_zebra_disabled

- name: Unit Socket Exists - zebra.socket
  command: systemctl -q list-unit-files zebra.socket
  register: socket_file_exists
  changed_when: false
  failed_when: socket_file_exists.rc not in [0, 1]
  check_mode: false
  when: ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
  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
  - medium_severity
  - no_reboot_needed
  - service_zebra_disabled

- name: Disable socket zebra
  systemd:
    name: zebra.socket
    enabled: 'no'
    state: stopped
    masked: 'yes'
  when:
  - ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
  - socket_file_exists.stdout_lines is search("zebra.socket",multiline=True)
  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
  - medium_severity
  - no_reboot_needed
  - service_zebra_disabled

include disable_zebra

class disable_zebra {
  service {'zebra':
    enable => false,
    ensure => 'stopped',  }
}

Disable Quagga Service

Description

Rationale

Remediation - OS Build Blueprint

Remediation - Shell Script

Remediation - Ansible

Remediation - Puppet