Control: 4.4 Ensure no security groups allow ingress from 0.0.0.0/0 to port 3389

Description

Security groups provide filtering of ingress/egress network traffic to Aliyun resources. It is recommended that no security group allows unrestricted ingress access to port 3389.

Remediation

Logon to ECS Console.
In the left pane, click to expand Network and Security, click Security Groups.

For each security group, perform the following:

Select the security group.
Click Add Rules.
Click the Inbound tab.
Identify the rules to be removed.
Click Delete in the Remove column.
Click OK.

Default Value:

By default, Authorization Object and port range are not set.

Usage

Run the control in your terminal:

powerpipe control run alicloud_compliance.control.cis_v200_4_4

Snapshot and share results via Turbot Pipes:

powerpipe login
powerpipe control run alicloud_compliance.control.cis_v200_4_4 --share

SQL

This control uses a named query:

with bad_groups as (
  select
    distinct arn
  from
    alicloud_ecs_security_group,
    jsonb_array_elements(permissions) as p
  where
    p ->> 'Policy' = 'Accept'
    and p ->> 'Direction' = 'ingress'
    and p ->> 'SourceCidrIp' = '0.0.0.0/0'
    and (
      p ->> 'PortRange' in ('-1/-1', '3389/3389')
      or (3389 between split_part(p ->> 'PortRange', '/', 1) :: int and split_part(p ->> 'PortRange', '/', 2) :: int)
    )
)
select
  a.arn as resource,
  case
    when b.arn is null then 'ok'
    else 'alarm'
  end as status,
  case
    when b.arn is null then a.security_group_id || ' does not allow ingress from 0.0.0.0/0 to port 3389.'
    else a.security_group_id || ' allow ingress from 0.0.0.0/0 to port 3389.'
  end as reason
  
  , a.account_id as account_id, a.region as region
from
  alicloud_ecs_security_group as a
left join bad_groups as b on a.arn = b.arn;

Control: 4.4 Ensure no security groups allow ingress from 0.0.0.0/0 to port 3389

Description

Remediation

Default Value:

Usage

SQL

Tags