WAF Global Rule Groups Should Not Be Empty

Using Console

Using CLI

To remediate the misconfiguration of empty WAF Global Rule Groups in AWS CloudWatch using AWS CLI, follow these steps:

List WAF Global Rule Groups: First, list all the WAF Global Rule Groups to identify the empty ones. Run the following AWS CLI command:
```
aws wafv2 list-available-managed-rule-groups --scope CLOUDWATCH_METRICS
```
Identify Empty Rule Groups: Look for any rule groups with an empty list of rules. Note down the ARN of the empty rule group that you want to remediate.
Update Rule Group: To remediate the empty rule group, you need to update the rule group with at least one rule. You can add a managed rule or a custom rule to the rule group. Run the following AWS CLI command to update the rule group:
```
aws wafv2 update-managed-rule-set-version --name <rule-group-name> --id <rule-group-id> --lock-token <lock-token> --recommended-version <version> --rules-action <action> --scope CLOUDWATCH_METRICS
```
- Replace <rule-group-name> with the name of the rule group.
- Replace <rule-group-id> with the ID of the rule group.
- Replace <lock-token> with the lock token of the rule group.
- Replace <version> with the version of the rule set.
- Replace <action> with the action to take on the rules (e.g., ALLOW, BLOCK).
Verify Update: After updating the rule group, verify that the rule group is no longer empty by listing the rules in the rule group:
```
aws wafv2 list-managed-rules --scope CLOUDWATCH_METRICS --id <rule-group-id>
```
Monitor Changes: Monitor the CloudWatch metrics to ensure that the WAF Global Rule Groups are no longer empty and are actively protecting your resources.

By following these steps, you can successfully remediate the misconfiguration of empty WAF Global Rule Groups in AWS CloudWatch using AWS CLI.

Using Python

To remediate the misconfiguration of empty WAF Global Rule Groups in AWS CloudWatch using Python, you can follow these steps:To associate a Global WebACL with a Web Application Firewall (WAF) using Python, you can use the AWS SDK for Python (Boto3). Below is a step-by-step guide:

Install Boto3: Make sure you have Boto3 installed. You can install it using pip:
```
pip install boto3
```
Set Up Boto3 Credentials: Ensure that you have set up your AWS credentials for Boto3 to access your AWS account. You can set up your credentials using AWS CLI or environment variables.
Write Python Code: Use the following Python code to associate a Global WebACL with a WAF:

import boto3

def associate_global_webacl_to_waf(web_acl_arn, waf_name):
    # Initialize the WAF client
    wafv2_client = boto3.client('wafv2')

    # Get the ARN of the resource associated with the WAF
    waf_resource_response = wafv2_client.get_web_acl(
        Name=waf_name
    )
    waf_resource_arn = waf_resource_response['WebACL']['ARN']

    # Associate the Global WebACL with the WAF
    response = wafv2_client.associate_web_acl(
        WebACLArn=web_acl_arn,
        ResourceArn=waf_resource_arn
    )

    print("Global WebACL associated with WAF successfully.")

def main():
    # Specify the ARN of the Global WebACL
    web_acl_arn = 'arn:aws:wafv2:us-west-2:123456789012:global/webacl/ExampleGlobalWebACL'

    # Specify the name of the WAF to associate with
    waf_name = 'ExampleWAF'

    # Associate Global WebACL with WAF
    associate_global_webacl_to_waf(web_acl_arn, waf_name)

if __name__ == "__main__":
    main()

Replace 'arn:aws:wafv2:us-west-2:123456789012:global/webacl/ExampleGlobalWebACL' with the ARN of your Global WebACL, and 'ExampleWAF' with the name of the WAF you want to associate with.

Run the Script: Execute the Python script. Upon successful execution, the Global WebACL will be associated with the specified WAF.

This script will use Boto3 to call the associate_web_acl method of the WAFv2 client, passing in the ARNs of the Global WebACL and the WAF resource to perform the association.

AWS Introduction

AWS Pricing

AWS Threats

AWS Misconfigurations

WAF Global Rule Groups Should Not Be Empty

More Info:

Risk Level

Address

Compliance Standards

Triage and Remediation

Remediation

AWS Introduction

AWS Pricing

AWS Threats

AWS Misconfigurations

​More Info:

​Risk Level

​Address

​Compliance Standards

​Triage and Remediation