Storage disallow authenticated user reads remediation

Using Console

Using CLI

To remediate the misconfiguration “Buckets should not allow all authenticated user reads” in GCP using GCP CLI, follow these steps:

Open the Cloud Shell in the GCP Console.
Run the following command to list all the buckets in your project:
```
gsutil ls
```
Identify the bucket that allows all authenticated user reads.
Run the following command to remove the allAuthenticatedUsers entity from the bucket’s IAM policy:
```
gsutil iam ch -d allAuthenticatedUsers gs://[BUCKET_NAME]
```
Replace [BUCKET_NAME] with the name of the bucket that you want to remediate.
Verify that the allAuthenticatedUsers entity has been removed from the bucket’s IAM policy by running the following command:
```
gsutil iam get gs://[BUCKET_NAME]
```
Replace [BUCKET_NAME] with the name of the bucket that you remediated.
Repeat these steps for any other buckets that allow all authenticated user reads.

By following these steps, you have successfully remediated the misconfiguration “Buckets should not allow all authenticated user reads” in GCP using GCP CLI.

Using Python

To remediate the issue of buckets allowing all authenticated user reads in GCP using Python, you can use the following steps:

Install the Google Cloud Storage Python library by running the following command:

pip install google-cloud-storage

Authenticate with your GCP account by setting the GOOGLE_APPLICATION_CREDENTIALS environment variable to the path of your service account key file. You can create a service account and download the key file from the GCP console.

export GOOGLE_APPLICATION_CREDENTIALS=/path/to/your/keyfile.json

Use the google-cloud-storage library to get a list of all buckets in your project.

from google.cloud import storage

client = storage.Client()
buckets = client.list_buckets()

For each bucket, check if it allows all authenticated users to read. If it does, update the bucket’s IAM policy to remove the allAuthenticatedUsers role from the roles/storage.objectViewer role.

for bucket in buckets:
    policy = bucket.get_iam_policy()
    binding = policy.bindings.get("roles/storage.objectViewer")
    if binding and "allAuthenticatedUsers" in binding.members:
        binding.members.remove("allAuthenticatedUsers")
        bucket.set_iam_policy(policy)

Verify that the issue has been remediated by checking the IAM policy for each bucket.

for bucket in buckets:
    policy = bucket.get_iam_policy()
    binding = policy.bindings.get("roles/storage.objectViewer")
    if binding and "allAuthenticatedUsers" in binding.members:
        print(f"Bucket {bucket.name} still allows all authenticated user reads")
    else:
        print(f"Bucket {bucket.name} has been remediated")

By following these steps, you can remediate the issue of buckets allowing all authenticated user reads in GCP using Python.

GCP Introduction

GCP Pricing

GCP Threats

GCP Misconfigurations

Resources

GCP Threats

Storage disallow authenticated user reads remediation

Triage and Remediation

Remediation

GCP Introduction

GCP Pricing

GCP Threats

GCP Misconfigurations

Resources

GCP Threats

​Triage and Remediation

​Remediation

Triage and Remediation

Remediation