def lambda_handler(event, context):
""" Lambda handler to initiate to find inactive keys for IAM users """
set_logging(level=logging.INFO)
logging.debug("Initiating IAM user inactive keys checking")
try:
sns_arn = os.environ["SNS_IAM_USER_INACTIVE_KEYS_ARN"]
config = Config()
if not config.iamUserInactiveKeys.enabled:
logging.debug("IAM user inactive keys checking disabled")
return
logging.debug(
"Iterating over each account to initiate IAM user inactive keys check"
)
for account_id, account_name in config.iamUserInactiveKeys.accounts.items(
):
payload = {
"account_id": account_id,
"account_name": account_name,
}
logging.debug(
f"Initiating IAM user inactive keys checking for '{account_name}'"
)
Sns.publish(sns_arn, payload)
except Exception:
logging.exception(
"Error occurred while initiation of IAM user inactive keys check")
return
logging.debug("IAM user inactive keys checking initiation done")
def lambda_handler(event, context):
""" Lambda handler to initiate to find SQS public access in policy """
set_logging(level=logging.INFO)
logging.debug("Initiating SQS policies checking")
try:
sns_arn = os.environ["SNS_ARN"]
config = Config()
if not config.sqspolicy.enabled:
logging.debug("SQS policies checking disabled")
return
logging.debug(
"Iterating over each account to initiate SQS policies check")
for account_id, account_name in config.sqspolicy.accounts.items():
payload = {
"account_id": account_id,
"account_name": account_name,
"regions": config.aws.regions,
"sns_arn": sns_arn
}
logging.debug(
f"Initiating SQS policies checking for '{account_name}'")
Sns.publish(sns_arn, payload)
except Exception:
logging.exception(
"Error occurred while initiation of SQS policy checking")
return
logging.debug("SQS policies checking initiation done")
def lambda_handler(event, context):
""" Lambda handler to initiate to find S3 bucket public access in ACL """
set_logging(level=logging.INFO)
logging.debug("Initiating S3 acls checking")
try:
sns_arn = os.environ["SNS_S3_ACL_ARN"]
config = Config()
if not config.s3acl.enabled:
logging.debug("S3 acls checking disabled")
return
logging.debug("Iterating over each account to initiate s3 acls check")
for account_id, account_name in config.s3acl.accounts.items():
payload = {
"account_id": account_id,
"account_name": account_name,
}
logging.debug(f"Initiating s3 acls checking for '{account_name}'")
Sns.publish(sns_arn, payload)
except Exception:
logging.exception("Error occurred while initiation of S3 acl checking")
return
logging.debug("S3 acls checking initiation done")
def lambda_handler(event, context):
""" Lambda handler to initiate to find public RDS snapshots """
set_logging(level=logging.INFO)
logging.debug("Initiating public RDS snapshots checking")
try:
sns_arn = os.environ["SNS_ARN"]
config = Config()
if not config.rdsSnapshot.enabled:
logging.debug("Public RDS snapshots checking disabled")
return
logging.debug("Iterating each account to initiate RDS snapshots checking")
for account_id, account_name in config.rdsSnapshot.accounts.items():
payload = {"account_id": account_id,
"account_name": account_name,
"regions": config.aws.regions,
"sns_arn": sns_arn
}
logging.debug(f"Initiating public RDS snapshots checking for '{account_name}'")
Sns.publish(sns_arn, payload)
except Exception:
logging.exception("Error occurred while initiation of public RDS snapshots checking")
return
logging.debug("Public RDS snapshot checking initiation done")
def lambda_handler(event, context):
""" Lambda handler to initiate to find security groups unrestricted access """
set_logging(level=logging.INFO)
logging.debug("Initiating CloudTrail checking")
try:
sns_arn = os.environ["SNS_ARN"]
config = Config()
if not config.cloudtrails.enabled:
logging.debug("CloudTrail checking disabled")
return
logging.debug(
"Iterating over each account to initiate CloudTrail check")
for account_id, account_name in config.cloudtrails.accounts.items():
payload = {
"account_id": account_id,
"account_name": account_name,
"regions": config.aws.regions,
"sns_arn": sns_arn
}
logging.debug(
f"Initiating CloudTrail checking for '{account_name}'")
Sns.publish(sns_arn, payload)
except Exception:
logging.exception(
"Error occurred while initiation of CloudTrail checking")
return
logging.debug("CloudTrail checking initiation done")
def lambda_handler(event, context):
""" Lambda handler to initiate to find unencrypted EBS volumes """
set_logging(level=logging.INFO)
logging.debug("Initiating unencrypted EBS volumes checking")
try:
sns_arn = os.environ["SNS_EBS_VOLUMES_ARN"]
config = Config()
if not config.ebsVolume.enabled:
logging.debug("Unencrypted EBS volumes checking disabled")
return
logging.debug("Iterating over each account to initiate unencrypted EBS volumes checking")
for account_id, account_name in config.ebsVolume.accounts.items():
payload = {"account_id": account_id,
"account_name": account_name,
"regions": config.aws.regions,
"sns_arn": sns_arn
}
logging.debug(f"Initiating unencrypted EBS volume checking for '{account_name}'")
Sns.publish(sns_arn, payload)
except Exception:
logging.exception("Error occurred while initiation of unencrypted EBS volumes checking")
return
logging.debug("Unencrypted EBS volume checking initiation done")
def lambda_handler(event, context):
""" Lambda handler to evaluate public ami issues"""
set_logging(level=logging.INFO)
try:
payload = json.loads(event["Records"][0]["Sns"]["Message"])
account_id = payload['account_id']
account_name = payload['account_name']
# get the last region from the list to process
region = payload['regions'].pop()
# if request_id is present in payload then this lambda was called from the API
request_id = payload.get('request_id', None)
except Exception:
logging.exception(f"Failed to parse event\n{event}")
return
try:
config = Config()
main_account = Account(region=config.aws.region)
ddb_table = main_account.resource("dynamodb").Table(
config.publicAMIs.ddb_table_name)
account = Account(id=account_id,
name=account_name,
region=region,
role_name=config.aws.role_name_identification)
if account.session is None:
return
logging.debug(f"Checking for Public AMI issues for {account}")
# existing open issues for account to check if resolved
open_issues = IssueOperations.get_account_open_issues(
ddb_table, account_id, PublicAMIIssue)
# make dictionary for fast search by id
# and filter by current region
open_issues = {
issue.issue_id: issue
for issue in open_issues if issue.issue_details.region == region
}
logging.debug(f"Public AMIs in DDB:\n{open_issues.keys()}")
checker = PublicAMIChecker(account=account)
if checker.check():
for ami in checker.amis:
logging.debug(f"Checking {ami.id}")
if ami.public_access:
issue = PublicAMIIssue(account_id, ami.id)
issue.issue_details.tags = ami.tags
issue.issue_details.name = ami.name
issue.issue_details.region = region
if config.publicAMIs.in_whitelist(account_id, ami.id):
issue.status = IssueStatus.Whitelisted
else:
issue.status = IssueStatus.Open
logging.debug(
f"Setting {ami.id}/{ami.id} status {issue.status}")
IssueOperations.update(ddb_table, issue)
# remove issue id from issues_list_from_db (if exists)
# as we already checked it
open_issues.pop(ami.id, None)
logging.debug(f"Public AMIs in DDB:\n{open_issues.keys()}")
# all other unresolved issues in DDB are for removed/remediated keys
for issue in open_issues.values():
IssueOperations.set_status_resolved(ddb_table, issue)
# track the progress of API request to scan specific account/region/feature
if request_id:
api_table = main_account.resource("dynamodb").Table(
config.api.ddb_table_name)
DDB.track_progress(api_table, request_id)
except Exception:
logging.exception(
f"Failed to check AMI public access for '{account_id} ({account_name})'"
)
return
# push SNS messages until the list with regions to check is empty
if len(payload['regions']) > 0:
try:
Sns.publish(payload["sns_arn"], payload)
except Exception:
logging.exception("Failed to chain public AMI checking")
logging.debug(
f"Checked AMI public access for '{account_id} ({account_name})'")
def lambda_handler(event, context):
""" Lambda handler to evaluate public EBS snapshots """
set_logging(level=logging.INFO)
try:
payload = json.loads(event["Records"][0]["Sns"]["Message"])
account_id = payload['account_id']
account_name = payload['account_name']
# get the last region from the list to process
region = payload['regions'].pop()
except Exception:
logging.exception(f"Failed to parse event\n{event}")
return
try:
config = Config()
main_account = Account(region=config.aws.region)
ddb_table = main_account.resource("dynamodb").Table(
config.ebsSnapshot.ddb_table_name)
account = Account(id=account_id,
name=account_name,
region=region,
role_name=config.aws.role_name_identification)
if account.session is None:
return
logging.debug(f"Checking for public EBS snapshots in {account}")
# existing open issues for account to check if resolved
open_issues = IssueOperations.get_account_open_issues(
ddb_table, account_id, EBSPublicSnapshotIssue)
# make dictionary for fast search by id
# and filter by current region
open_issues = {
issue.issue_id: issue
for issue in open_issues if issue.issue_details.region == region
}
logging.debug(f"Public EBS snapshots in DDB:\n{open_issues.keys()}")
checker = EBSPublicSnapshotsChecker(account=account)
if checker.check():
for snapshot in checker.snapshots:
if snapshot.public:
issue = EBSPublicSnapshotIssue(account_id, snapshot.id)
issue.issue_details.region = snapshot.account.region
issue.issue_details.volume_id = snapshot.volume_id
issue.issue_details.tags = snapshot.tags
if config.ebsSnapshot.in_whitelist(account_id,
snapshot.id):
issue.status = IssueStatus.Whitelisted
else:
issue.status = IssueStatus.Open
logging.debug(
f"Setting {snapshot.id} status {issue.status}")
IssueOperations.update(ddb_table, issue)
# remove issue id from issues_list_from_db (if exists)
# as we already checked it
open_issues.pop(snapshot.id, None)
logging.debug(
f"Public EBS snapshots in DDB:\n{open_issues.keys()}")
# all other unresolved issues in DDB are for removed/remediated EBS snapshots
for issue in open_issues.values():
IssueOperations.set_status_resolved(ddb_table, issue)
except Exception:
logging.exception(
f"Failed to check public EBS snapshots in '{region}' for '{account_id} ({account_name})'"
)
# push SNS messages until the list with regions to check is empty
if len(payload['regions']) > 0:
try:
Sns.publish(payload["sns_arn"], payload)
except Exception:
logging.exception("Failed to chain public EBS snapshots checking")
logging.debug(
f"Checked public EBS snapshots in '{region}' for '{account_id} ({account_name})'"
)
def lambda_handler(event, context):
""" Lambda handler to evaluate insecure services """
set_logging(level=logging.INFO)
try:
payload = json.loads(event["Records"][0]["Sns"]["Message"])
account_id = payload['account_id']
account_name = payload['account_name']
# get the last region from the list to process
region = payload['regions'].pop()
except Exception:
logging.exception(f"Failed to parse event\n{event}")
return
try:
config = Config()
main_account = Account(region=config.aws.region)
ddb_table = main_account.resource("dynamodb").Table(
config.sg.ddb_table_name)
account = Account(id=account_id,
name=account_name,
region=region,
role_name=config.aws.role_name_identification)
if account.session is None:
return
logging.debug(f"Checking for insecure services in {account}")
# existing open issues for account to check if resolved
open_issues = IssueOperations.get_account_open_issues(
ddb_table, account_id, SecurityGroupIssue)
# make dictionary for fast search by id
# and filter by current region
open_issues = {
issue.issue_id: issue
for issue in open_issues if issue.issue_details.region == region
}
logging.debug(f"Security groups in DDB:\n{open_issues.keys()}")
checker = SecurityGroupsChecker(
account=account, restricted_ports=config.sg.restricted_ports)
if checker.check():
for sg in checker.groups:
logging.debug(f"Checking {sg.name} ({sg.id})")
if not sg.restricted:
# TODO: move instances detection for security group from reporting to identification
#ec2_instances = EC2Operations.get_instance_details_of_sg_associated(account.client("ec2"), sg.id)
#logging.debug(f"associated ec2 instances: {ec2_instances}")
issue = SecurityGroupIssue(account_id, sg.id)
issue.issue_details.name = sg.name
issue.issue_details.region = sg.account.region
issue.issue_details.tags = sg.tags
issue.issue_details.status = sg.status.value
for perm in sg.permissions:
for ip_range in perm.ip_ranges:
if not ip_range.restricted:
issue.add_perm(perm.protocol, perm.from_port,
perm.to_port, ip_range.cidr,
ip_range.status)
if config.sg.in_whitelist(
account_id, sg.name) or config.sg.in_whitelist(
account_id, sg.id):
issue.status = IssueStatus.Whitelisted
else:
issue.status = IssueStatus.Open
logging.debug(f"Setting {sg.id} status {issue.status}")
IssueOperations.update(ddb_table, issue)
# remove issue id from issues_list_from_db (if exists)
# as we already checked it
open_issues.pop(sg.id, None)
logging.debug(f"Security groups in DDB:\n{open_issues.keys()}")
# all other unresolved issues in DDB are for removed/remediated security groups
for issue in open_issues.values():
IssueOperations.set_status_resolved(ddb_table, issue)
except Exception:
logging.exception(
f"Failed to check insecure services in '{region}' for '{account_id} ({account_name})'"
)
# push SNS messages until the list with regions to check is empty
if len(payload['regions']) > 0:
try:
Sns.publish(payload["sns_arn"], payload)
except Exception:
logging.exception("Failed to chain insecure services checking")
logging.debug(
f"Checked insecure services in '{region}' for '{account_id} ({account_name})'"
)
def start_scan(account_id, regions, security_features, tags, ids):
config = Config()
account_name = config.aws.accounts.get(account_id, None)
if not account_id:
return bad_request(text="account_id is required parameter")
if account_name is None:
return bad_request(text=f"account '{account_id}' is not defined")
valid_security_features = [module.section for module in config.modules]
for security_feature in security_features:
if security_feature not in valid_security_features:
return bad_request(
text=
f"wrong security feature - '{security_feature}', available choices - {valid_security_features}"
)
if not security_features:
security_features = valid_security_features
all_regions = config.aws.regions
for region in regions:
if region not in all_regions:
return bad_request(text=f"Region '{region} is not supported")
# empty list means we want to scan all supported regions
if not regions:
regions = all_regions
if ids is not None and not isinstance(ids, list):
return bad_request(text=f"'ids' parameter must be list")
if tags is not None and not isinstance(tags, dict):
return bad_request(text=f"'tags' parameter must be dict")
main_account = Account(region=config.aws.region)
api_table = main_account.resource("dynamodb").Table(
config.api.ddb_table_name)
to_scan = []
for security_feature in security_features:
accounts = config.get_module_config_by_name(security_feature).accounts
if account_id in accounts:
to_scan.append(security_feature)
regional_services = set(to_scan) - set(GLOBAL_SECURITY_FEATURES)
global_services = set(to_scan).intersection(set(GLOBAL_SECURITY_FEATURES))
total = len(regional_services) * len(regions) + len(global_services)
request_params = {
"account_id": account_id,
"regions": regions,
"security_features": to_scan,
"tags": tags
}
request_id = uuid.uuid4().hex
DDB.add_request(api_table, request_id, request_params, total)
for security_feature in to_scan:
topic_name = config.get_module_config_by_name(
security_feature).sns_topic_name
topic_arn = get_sns_topic_arn(config, topic_name)
payload = {
"account_id": account_id,
"account_name": account_name,
"regions": regions,
"sns_arn": topic_arn,
"request_id": request_id
}
Sns.publish(topic_arn, payload)
response = {'request_id': request_id}
return {
"statusCode":
200,
"body":
json.dumps(response, indent=4)
if isinstance(response, dict) else response
}
def lambda_handler(event, context):
""" Lambda Handler to describe cloud trails enabled or not for each region """
set_logging(level=logging.INFO)
try:
payload = json.loads(event["Records"][0]["Sns"]["Message"])
account_id = payload['account_id']
account_name = payload['account_name']
# get the last region from the list to process
region = payload['regions'].pop()
# if request_id is present in payload then this lambda was called from the API
request_id = payload.get('request_id', None)
except Exception:
logging.exception(f"Failed to parse event\n{event}")
return
try:
config = Config()
main_account = Account(region=config.aws.region)
ddb_table = main_account.resource("dynamodb").Table(
config.cloudtrails.ddb_table_name)
account = Account(id=account_id,
name=account_name,
region=region,
role_name=config.aws.role_name_identification)
if account.session is None:
return
logging.debug(f"Checking for CloudTrail logging issues in {account}")
# existing open issues for account to check if resolved
open_issues = IssueOperations.get_account_open_issues(
ddb_table, account_id, CloudTrailIssue)
# make dictionary for fast search by id
# and filter by current region
open_issues = {
issue.issue_id: issue
for issue in open_issues if issue.issue_id == region
}
logging.debug(f"CloudTrail region in DDB:\n{open_issues.keys()}")
checker = CloudTrailChecker(account=account)
if checker.check():
if checker.disabled or checker.delivery_errors:
issue = CloudTrailIssue(account_id, region)
issue.issue_details.disabled = checker.disabled
issue.issue_details.delivery_errors = checker.delivery_errors
issue.add_trails(checker.trails)
if config.cloudtrails.in_whitelist(account_id, region):
issue.status = IssueStatus.Whitelisted
else:
issue.status = IssueStatus.Open
logging.debug(f"Setting {region} status {issue.status}")
IssueOperations.update(ddb_table, issue)
# issue exists in ddb and was fixed
elif region in open_issues:
IssueOperations.set_status_resolved(ddb_table,
open_issues[region])
# track the progress of API request to scan specific account/region/feature
if request_id:
api_table = main_account.resource("dynamodb").Table(
config.api.ddb_table_name)
DDB.track_progress(api_table, request_id)
except Exception:
logging.exception(
f"Failed to check CloudTrail in '{region}' for '{account_id} ({account_name})'"
)
# push SNS messages until the list with regions to check is empty
if len(payload['regions']) > 0:
try:
Sns.publish(payload["sns_arn"], payload)
except Exception:
logging.exception("Failed to chain CloudTrail checking")
logging.debug(
f"Checked CloudTrail in '{region}' for '{account_id} ({account_name})'"
)
def lambda_handler(event, context):
""" Lambda handler to evaluate SQS queue policy """
set_logging(level=logging.DEBUG)
try:
payload = json.loads(event["Records"][0]["Sns"]["Message"])
account_id = payload['account_id']
account_name = payload['account_name']
# get the last region from the list to process
region = payload['regions'].pop()
# region = payload['region']
except Exception:
logging.exception(f"Failed to parse event\n{event}")
return
try:
config = Config()
main_account = Account(region=config.aws.region)
ddb_table = main_account.resource("dynamodb").Table(config.sqspolicy.ddb_table_name)
account = Account(id=account_id,
name=account_name,
region=region,
role_name=config.aws.role_name_identification)
if account.session is None:
return
logging.debug(f"Checking for public SQS policies in {account}")
# existing open issues for account to check if resolved
open_issues = IssueOperations.get_account_open_issues(ddb_table, account_id, SQSPolicyIssue)
# make dictionary for fast search by id
# and filter by current region
open_issues = {issue.issue_id: issue for issue in open_issues if issue.issue_details.region == region}
logging.debug(f"SQS in DDB:\n{open_issues.keys()}")
checker = SQSPolicyChecker(account=account)
if checker.check():
for queue in checker.queues:
logging.debug(f"Checking {queue.name}")
if queue.public:
issue = SQSPolicyIssue(account_id, queue.url)
issue.issue_details.tags = queue.tags
issue.issue_details.name = queue.name
issue.issue_details.region = queue.account.region
issue.issue_details.policy = queue.policy
if config.sqspolicy.in_whitelist(account_id, queue.url):
issue.status = IssueStatus.Whitelisted
else:
issue.status = IssueStatus.Open
logging.debug(f"Setting {queue.name} status {issue.status}")
IssueOperations.update(ddb_table, issue)
# remove issue id from issues_list_from_db (if exists)
# as we already checked it
open_issues.pop(queue.url, None)
logging.debug(f"SQS in DDB:\n{open_issues.keys()}")
# all other unresolved issues in DDB are for removed/remediated queues
for issue in open_issues.values():
IssueOperations.set_status_resolved(ddb_table, issue)
except Exception:
logging.exception(f"Failed to check SQS policies for '{account_id} ({account_name})'")
return
# push SNS messages until the list with regions to check is empty
if len(payload['regions']) > 0:
try:
Sns.publish(payload["sns_arn"], payload)
except Exception:
logging.exception("Failed to chain insecure services checking")
logging.debug(f"Checked SQS policies for '{account_id} ({account_name})'")