Control: 3.17 Ensure that the daemon.json file ownership is set to root:root

Description

You should verify that the daemon.json file individual ownership and group ownership is correctly set to root, if it is in use.

The daemon.json file contains sensitive parameters that could alter the behavior of the docker daemon. It should therefore be owned and group owned by root to ensure it can not be modified by less privileged users.

Remediation

If the daemon.json file is present, you should execute the command below:

chown root:root /etc/docker/daemon.json

This sets the ownership and group ownership for the file to root.

Default Value

This file may not be present on the system, and in that case, this recommendation is not applicable.

Usage

Run the control in your terminal:

powerpipe control run docker_compliance.control.cis_v160_3_17

Snapshot and share results via Turbot Pipes:

powerpipe login
powerpipe control run docker_compliance.control.cis_v160_3_17 --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,
    stderr_output,
    _ctx ->> 'connection_name' as conn
  from
    exec_command,
    os_output
  where
    os_conn = _ctx ->> 'connection_name'
    and command = 'stat -c %U:%G /etc/docker/daemon.json | grep -v root:root'
)
select
  host as resource,
  case
    when os.os ilike '%Darwin%' then 'skip'
    when o.stderr_output like '%No such file or directory%' then 'skip'
    when o.stdout_output = '' then 'ok'
    else 'alarm'
  end as status,
  case
    when os.os ilike '%Darwin%' then host || ' /etc/docker/daemon.json does not exist on ' || os.os || ' OS.'
    when o.stderr_output like '%No such file or directory%' then host || ' recommendation is not applicable as the file is unavailable.'
    when o.stdout_output = '' then host || ' daemon.json file ownership is set to root:root.'
    else host || ' Docker socket 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
where
  os.os_conn = h.host_conn
  and h.host_conn = o.conn;

Control: 3.17 Ensure that the daemon.json file ownership is set to root:root

Description

Remediation

Default Value

Usage

SQL

Tags