Rule: ELB Application Load Balancers Should Drop HTTP Headers

Rule Description:

Troubleshooting Steps (if any):

2. 1.
   Verify that the ELB is correctly configured to handle incoming traffic.
4. 2.
   Check if the ELB logging feature is enabled and functioning properly.
6. 3.
   Ensure that the desired HTTP headers are being dropped by the ELB.
8. 4.
   Review any error messages or logs for potential issues and resolve accordingly.
10. 5.
    If the problem persists, consult the AWS documentation or contact AWS support for further assistance.

Necessary Code (if any):

2. 1.
   Modify the ELB Configuration:

aws elbv2 modify-load-balancer-attributes \
    --load-balancer-arn <load_balancer_arn> \
    --attributes '[
        {
            "Key": "deletion_protection.enabled",
            "Value": "false"
        },
        {
            "Key": "http2.enabled",
            "Value": "false"
        },
        {
            "Key": "routing.http.drop_invalid_header_fields.enabled",
            "Value": "true"
        }
    ]'

2. 1.
   Use AWS CLI Command:

aws elbv2 modify-load-balancer-attributes \
    --load-balancer-arn <load_balancer_arn> \
    --attributes file://attributes.json

attributes.json

Step-by-Step Guide for Remediation:

2. 1.

   Identify the target ELB:

   • Log in to the AWS Management Console.
   • Go to the EC2 service.
   • Select "Load Balancers" from the sidebar menu.
   • Identify the ELB associated with your application.
4. 2.

   Enable Logging (Optional):

   • In the ELB configuration dashboard, go to the "Attributes" tab.
   • Enable the logging feature to capture detailed information about the traffic.
6. 3.

   Modify the ELB Configuration:

   • Open the AWS CLI or AWS Management Console.
   • Use the provided code snippet to modify the ELB attributes.
   • Replace

     <load_balancer_arn>

     with the ARN (Amazon Resource Name) of your ELB.
8. 4.

   Verify the Configuration:

   • Ensure that the desired attributes are correctly modified by checking the ELB configuration.
   • Verify that the headers specified by HIPAA regulations are being dropped.
10. 5.

    Test Application:

    • Send sample HTTP requests to the ELB and monitor the response headers.
    • Make sure the headers that contain sensitive information are being dropped.
12. 6.

    Review Logs (Optional):

    • If you enabled logging, review the logs to ensure that the desired headers are no longer present.
    • Analyze the logs for any errors or unexpected behavior.
14. 7.

    Repeat the Process (if needed):

    • If you have multiple ELBs, repeat the same steps for each of them.
    • Ensure consistent configuration across all ELBs to maintain HIPAA compliance.

Conclusion: