def inventory_ec2_wide_open_security_groups(regions, session=boto3) -> Check:
check = Check('EC2',
'Security Groups should not be wide open for the world',
ComplianceStatus.Compliant)
for region in regions:
client = session.client('ec2', region)
response = client.describe_security_groups()
for security_group in response['SecurityGroups']:
group_name = security_group['GroupName']
for ip_permission in security_group['IpPermissions']:
ip_ranges = ip_permission['IpRanges']
for ip_range in ip_ranges:
cidr_ip = ip_range['CidrIp']
if cidr_ip == '0.0.0.0/0':
from_port = ip_permission['FromPort']
to_port = ip_permission['ToPort']
if from_port != 443 or to_port != 443:
check_metadata_1 = CheckMetadata(
'Security group', f'{group_name} ({region})')
check_metadata_2 = CheckMetadata(
'Port ranges',
f'From port: {from_port} To port: {to_port}')
check.add_metadata(check_metadata_1)
check.add_metadata(check_metadata_2)
check.compliance_status = ComplianceStatus.NonCompliant
return check
def inventory_wide_open_s3_buckets(regions, session=boto3) -> Check:
check = Check('S3', 'S3 bucket wide open for the world',
ComplianceStatus.Compliant)
client = session.client('s3')
response = client.list_buckets()
for bucket in response['Buckets']:
bucket_name = bucket['Name']
try:
response = client.get_bucket_policy_status(Bucket=bucket_name)
except ClientError as e:
# No bucket policy exist
continue
policy_status = response['PolicyStatus']
if policy_status['IsPublic']:
response = client.get_bucket_policy(Bucket=bucket_name)
policy_json = response['Policy']
policy = eval(policy_json)
for statement in policy['Statement']:
if 'Condition' not in statement:
metadata = CheckMetadata('Bucket name', f'{bucket_name}')
check.add_metadata(metadata)
check.compliance_status = ComplianceStatus.NonCompliant
break
return check
def test__create_non_compliant_assessment():
# Arrange
check = Check('IAM', 'No IAM users...', ComplianceStatus.NonCompliant)
metadata = CheckMetadata(key='ResourceId', value='i-345bh34bjky56b34')
check.add_metadata(metadata)
assessment = Assessment('playground-dev', '123456789098')
assessment.add_check(check)
assessment_readable = str(assessment)
print(assessment_readable)
# Assert
assert 'i-345bh34bjky56b34' in assessment_readable
def inventory_s3_as_static_website(regions, session=boto3) -> Check:
check = Check('S3', 'S3 bucket should not be used for static hosting',
ComplianceStatus.Compliant)
client = session.client('s3')
response = client.list_buckets()
for bucket in response['Buckets']:
bucket_name = bucket['Name']
try:
response = client.get_bucket_website(Bucket=bucket_name)
metadata = CheckMetadata('Bucket name', f'{bucket_name}')
check.add_metadata(metadata)
check.compliance_status = ComplianceStatus.NonCompliant
except:
pass
return check
def inventory_wide_open_iam_role(regions, session=boto3) -> Check:
check = Check('IAM', 'IAM Role wide open for the world',
ComplianceStatus.Compliant)
client = session.client('iam')
response = client.list_roles()
roles = response['Roles']
for role in roles:
assume_role_policy_document = role['AssumeRolePolicyDocument']
role_name = role['RoleName']
statements = assume_role_policy_document['Statement']
for statement in statements:
principal = statement['Principal']
if 'AWS' in principal:
if principal['AWS'] == '*':
metadata = CheckMetadata('Role', f'{role_name}')
check.add_metadata(metadata)
check.compliance_status = ComplianceStatus.NonCompliant
return check
def inventory_wide_open_sns_topics(regions, session=boto3) -> Check:
check = Check('SNS', 'SNS topic wide open for the world',
ComplianceStatus.Compliant)
for region in regions:
client = session.client('sns', region)
response = client.list_topics() # NextToken='string')
topics = response['Topics']
for topic in topics:
topic_arn = topic['TopicArn']
response = client.get_topic_attributes(TopicArn=topic_arn)
attributes = response['Attributes']
policy_json = attributes['Policy']
policy = eval(policy_json)
for statement in policy['Statement']:
if statement['Principal'] == '*':
metadata = CheckMetadata('SNS topic',
f'{topic_arn} ({region})')
check.add_metadata(metadata)
check.compliance_status = ComplianceStatus.NonCompliant
return check
def inventory_iam_users(regions, session=boto3) -> Check:
check = Check('IAM', 'IAM User with old access keys (over 90 days)',
ComplianceStatus.Compliant)
client = session.client('iam')
response = client.list_users()
users = response['Users']
for user in users:
user_name = user['UserName']
response = client.list_access_keys(UserName=user_name)
for key in response['AccessKeyMetadata']:
created = key['CreateDate']
access_key_id = key['AccessKeyId']
age = datetime.datetime.now(datetime.timezone.utc) - created
if age.days > 90:
check_metadata_1 = CheckMetadata(
'User name',
f'{user_name} (Key Id: {access_key_id}, Key days of age: {age.days})'
)
check.add_metadata(check_metadata_1)
check.compliance_status = ComplianceStatus.NonCompliant
return check
def inventory_cloudtrail_active(regions, session=boto3) -> Check:
check = Check(
'CloudTrail',
'At least one active CloudTrail trail should be present in account',
ComplianceStatus.Compliant)
for region in regions:
client = session.client('cloudtrail', region)
response = client.list_trails()
trails = response['Trails']
trail_on = False
for trail in trails:
trail_arn = trail['TrailARN']
response = client.get_trail_status(Name=trail_arn)
is_logging = response['IsLogging']
if is_logging:
trail_on = True
if not trail_on:
metadata = CheckMetadata('No active trail', f'{region}')
check.add_metadata(metadata)
check.compliance_status = ComplianceStatus.NonCompliant
return check
def inventory_wide_open_sqs_queue(regions, session=boto3) -> Check:
check = Check('SQS', 'SQS queue wide open for the world',
ComplianceStatus.Compliant)
for region in regions:
client = session.client('sqs', region)
response = client.list_queues()
if 'QueueUrls' not in response:
return check
for queue_url in response['QueueUrls']:
response_policy = client.get_queue_attributes(
QueueUrl=queue_url, AttributeNames=['Policy'])
policy_json = response_policy['Attributes']['Policy']
policy = eval(policy_json)
for statement in policy['Statement']:
if statement['Principal'] == '*':
metadata = CheckMetadata('SQS queue',
f'{queue_url} ({region})')
check.add_metadata(metadata)
check.compliance_status = ComplianceStatus.NonCompliant
return check