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GCP Threats
Buckets Should Have DNS Compliant Names
More Info:
Ensure that cloud Storage buckets following a DNS-compliant naming scheme, which avoid the use of a period i.e. ”.”
Risk Level
Low
Address
Operational Maturity, Security
Compliance Standards
CBP
Triage and Remediation
Remediation
Sure, here are the step-by-step instructions to remediate this misconfiguration in GCP using the GCP console:
- Open the GCP Console and select the project where the bucket is located.
- Navigate to the Cloud Storage section from the left-hand menu.
- Select the bucket that you want to remediate.
- Click on the “Edit bucket details” button at the top of the page.
- In the “Name” field, enter a DNS-compliant name for the bucket. The name should only contain lowercase letters, numbers, and hyphens, and should start and end with a letter or number.
- Click the “Save” button to save the changes.
Once you have completed these steps, the bucket will have a DNS-compliant name and the misconfiguration will be remediated.
To remediate the misconfiguration “Buckets Should Have DNS Compliant Names” in GCP using GCP CLI, please follow the below steps:
-
Open the Cloud Shell in your GCP Console.
-
Run the following command to list all the buckets in your project:
gsutil ls
-
Identify the bucket that has a non-DNS compliant name.
-
Run the following command to rename the bucket with a DNS compliant name:
gsutil mv gs://<old-bucket-name> gs://<new-bucket-name>
Note: Replace <old-bucket-name> with the non-DNS compliant bucket name and <new-bucket-name> with a DNS compliant bucket name.
- Verify that the bucket has been renamed successfully by running the following command:
gsutil ls
- Repeat the above steps for all the non-DNS compliant buckets in your project.
By following these steps, you can remediate the misconfiguration “Buckets Should Have DNS Compliant Names” in GCP using GCP CLI.
To remediate the misconfiguration “Buckets Should Have DNS Compliant Names” in GCP using Python, follow these steps:
- Install the Google Cloud Storage Python library using the following command:
!pip install google-cloud-storage
- Create a Python script to check the bucket name and modify it if necessary. Here’s an example script:
from google.cloud import storage
def remediate_bucket_name(bucket_name):
"""
Check if the bucket name is DNS compliant and modify it if necessary.
"""
if not bucket_name.islower():
# Convert bucket name to lowercase
bucket_name = bucket_name.lower()
if not bucket_name.isalnum():
# Replace non-alphanumeric characters with hyphens
bucket_name = bucket_name.replace('_', '-')
bucket_name = re.sub(r'[^a-zA-Z0-9-]+', '', bucket_name)
if bucket_name.startswith('-') or bucket_name.endswith('-'):
# Remove leading or trailing hyphens
bucket_name = bucket_name.strip('-')
if len(bucket_name) < 3 or len(bucket_name) > 63:
# Bucket name must be between 3 and 63 characters long
bucket_name = bucket_name[:63]
bucket_name = bucket_name.strip('-')
return bucket_name
# Replace <BUCKET_NAME> with the name of your bucket
bucket_name = "<BUCKET_NAME>"
# Create a client object
client = storage.Client()
# Get the bucket object
bucket = client.get_bucket(bucket_name)
# Get the current bucket name
current_name = bucket.name
# Check if the current name is DNS compliant
if current_name != remediate_bucket_name(current_name):
# Modify the bucket name
new_name = remediate_bucket_name(current_name)
bucket.rename(new_name)
print(f"Bucket name has been changed from {current_name} to {new_name}.")
else:
print("Bucket name is DNS compliant.")
-
Replace
<BUCKET_NAME>with the name of your bucket in the script. -
Run the script and it will check if the bucket name is DNS compliant. If it is not compliant, the script will modify the bucket name to make it compliant. If the bucket name is already compliant, the script will print a message saying so.
Note: It is important to test the script thoroughly before running it in a production environment. Also, you should ensure that the bucket name is not already being used by another bucket in your GCP project.