standard
turbot/aws_cis

Pipeline: 5.3 Ensure no security groups allow ingress from 0.0.0.0/0 to remote server administration ports

Description

Security groups provide stateful filtering of ingress and egress network traffic to AWS resources. It is recommended that no security group allows unrestricted ingress access to remote server administration ports, such as SSH on port 22 and RDP on port 3389, using either the TCP (6), UDP (17), or ALL (-1) protocols.

Public access to remote server administration ports, such as 22 (when used for SSH, not SFTP) and 3389, increases the attack surface of resources and unnecessarily raises the risk of resource compromise.

Remediation

Perform the following to implement the prescribed state:

  1. Login to the AWS VPC Console at https://console.aws.amazon.com/vpc/home.
  2. In the left pane, click Security Groups.
  3. For each security group, perform the following:
  • Select the security group.
  • Click the Inbound Rules tab.
  • Click the Edit inbound rules button.
  • Identify the rules to be edited or removed.
  • Either A) update the Source field to a range other than 0.0.0.0/0, or B) click Delete to remove the offending inbound rule.
  • Click Save rules.

Run the pipeline

To run this pipeline from your terminal:

flowpipe pipeline run aws_cis.pipeline.cis_v400_5_3

Use this pipeline

To call this pipeline from your pipeline, use a step:

step "pipeline" "step_name" {
pipeline = aws_cis.pipeline.cis_v400_5_3
}

Params

NameTypeRequiredDescriptionDefault
database
connection.steampipe
YesDatabase connection string.connection.steampipe.default
notifier
notifier
YesThe name of the notifier to use for sending notification messages.notifier.default
notification_level
string
YesThe verbosity level of notification messages to send. Valid options are 'verbose', 'info', 'error'.info
approvers
list(notifier)
YesList of notifiers to be used for obtaining action/approval decisions.notifier.default

Outputs

This pipeline has no outputs.

Tags

folder = CIS v4.0.0/5 Networking