Control: 3.1 Ensure that the docker.service file ownership is set to root:root

Description

You should verify that the docker.service file ownership and group ownership are correctly set to root.

The docker.service file contains sensitive parameters that may alter the behavior of the Docker daemon. It should therefore be individually and group owned by the root user in order to ensure that it is not modified or corrupted by a less privileged user.

Remediation

Step 1: Find out the file location:

systemctl show -p FragmentPath docker.service

Step 2: If the file does not exist, this recommendation is not applicable. If the file does exist, you should execute the command below, including the correct file path, in order to set the ownership and group ownership for the file to root. For example,

chown root:root /usr/lib/systemd/system/docker.service

Default Value

This file may not be present on the system and if it is not, this recommendation is not applicable. By default, if the file is present, the correct permissions are for the ownership and group ownership to be set to root.

Usage

Run the control in your terminal:

powerpipe control run docker_compliance.control.cis_v160_3_1

Snapshot and share results via Turbot Pipes:

powerpipe login
powerpipe control run docker_compliance.control.cis_v160_3_1 --share

SQL

This control uses a named query:

with os_output as (
  select
    btrim(stdout_output, E' \n\r\t') as os,
    _ctx ->> 'connection_name' as os_conn
  from
    exec_command
  where
    command = 'uname -s'
), hostname as (
  select
    btrim(stdout_output, E' \n\r\t') as host,
    _ctx ->> 'connection_name' as host_conn,
    _ctx
  from
    exec_command
  where
    command = 'hostname'
),

linux_output as (
  select
    stdout_output,
    _ctx ->> 'connection_name' as conn
  from
    exec_command,
    os_output
  where
    os_conn = _ctx ->> 'connection_name'
    and command = 'stat -c %U:%G "$(systemctl show -p FragmentPath docker.service | awk -F''='' ''{print $2}'')" | grep -v root:root'
),
linux_file_location as (
  select
    stdout_output,
    _ctx ->> 'connection_name' as conn
  from
    exec_command,
    os_output
  where
    os_conn = _ctx ->> 'connection_name'
    and command = 'echo $(systemctl show -p FragmentPath docker.service)'
)
select
  host as resource,
  case
    when os.os ilike '%Darwin%' then 'skip'
    when l.stdout_output = '' then 'skip'
    when o.stdout_output = '' then 'ok'
    else 'alarm'
  end as status,
  case
    when os.os ilike '%Darwin%' then host || ' docker.service does not exist on ' || os.os || ' OS.'
    when l.stdout_output = '' then host || ' recommendation is not applicable as the file is unavailable.'
    when o.stdout_output = '' then host || ' docker.service file ownership is set to root:root.'
    else host || ' docker.service file ownership is not set to root:root.'
  end as reason
  , h._ctx ->> 'connection_name' as connection_name
from
  hostname as h,
  os_output as os,
  linux_output as o,
  linux_file_location as l
where
  os.os_conn = h.host_conn
  and h.host_conn = o.conn
  and h.host_conn = l.conn

Control: 3.1 Ensure that the docker.service file ownership is set to root:root

Description

Remediation

Default Value

Usage

SQL

Tags