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test_securityhub.py
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# Copyright The Cloud Custodian Authors.
# SPDX-License-Identifier: Apache-2.0
from c7n.exceptions import PolicyValidationError
from c7n.resources.aws import shape_validate
from .common import BaseTest, event_data
import logging
import time
LambdaFindingId = "us-east-2/644160558196/81cc9d38b8f8ebfd260ecc81585b4bc9/9f5932aa97900b5164502f41ae393d23" # NOQA
class SecurityHubMode(BaseTest):
def test_resolve_import_finding(self):
factory = self.replay_flight_data('test_security_hub_mode_resolve')
policy = self.load_policy({
'name': 'trail-fixer',
'resource': 'aws.iam-user',
'mode': {
'type': 'hub-finding',
'role': 'foo'}},
session_factory=factory)
event = event_data("event-securityhub-iamkey-finding-action.json")
hub = policy.get_execution_mode()
resources = hub.resolve_import_finding(event)
self.assertEqual(
sorted(resources),
sorted(['arn:aws:iam::644160558196:user/kapil']))
resources = hub.resolve_resources(event)
self.assertEqual(len(resources), 1)
self.assertEqual(resources[0]['UserName'], 'kapil')
def test_resolve_action_finding(self):
policy = self.load_policy({
'name': 'trail-fixer',
'resource': 'aws.cloudtrail',
'mode': {
'type': 'hub-finding',
'role': 'foo'}})
event = event_data("event-securityhub-cloudtrail-finding-action.json")
hub = policy.get_execution_mode()
resources = hub.resolve_action_finding(event)
self.assertEqual(
sorted(resources),
sorted([
'arn:aws:cloudtrail:us-east-1:644160558196:trail/skunk-trails']))
def test_resolve_action_insight(self):
factory = self.replay_flight_data(
"test_security_hub_mode_action_insight")
policy = self.load_policy({
'name': 'iam-key',
'resource': 'aws.iam-user',
'mode': {
'type': 'hub-action',
'role': 'foo'}},
session_factory=factory)
hub = policy.get_execution_mode()
event = event_data("event-securityhub-insight-2.json")
resources = hub.resolve_action_insight(event)
self.assertEqual(
sorted(resources),
sorted([
'arn:aws:iam::644160558196:user/brent.clements',
'arn:aws:iam::644160558196:user/david.shepherd2',
'arn:aws:iam::644160558196:user/david.yun',
'arn:aws:iam::644160558196:user/kapil']))
def test_resolve_multi_account_resource_sets(self):
factory = self.replay_flight_data(
'test_security_hub_multi_account_mode')
policy = self.load_policy({
'name': 'lambda-remediate',
'resource': 'aws.lambda',
'mode': {
'type': 'hub-action',
'role': 'CustodianPolicyExecution',
'member-role': 'arn:aws:iam::{account_id}:role/CustodianGuardDuty'
}},
config={'region': 'us-east-2',
'account_id': '519413311747'},
session_factory=factory)
hub = policy.get_execution_mode()
event = event_data('event-securityhub-lambda-cross.json')
partition_resources = hub.get_resource_sets(event)
self.assertEqual(
{p: list(map(repr, v)) for p, v in partition_resources.items()},
{('644160558196', 'us-east-1'): [
("<arn:aws:lambda:us-east-1:644160558196:function:"
"custodian-enterprise-ec2-instances-no-elastic-ip-isolate>")
]})
output = self.capture_logging(policy.log.name, level=logging.INFO)
results = hub.run(event, {})
self.assertIn('Assuming member role:arn:aws:iam::644160558196', output.getvalue())
self.assertEqual(
results[('644160558196', 'us-east-1')][0]['FunctionName'],
'custodian-enterprise-ec2-instances-no-elastic-ip-isolate')
class SecurityHubTest(BaseTest):
def test_custom_classifier(self):
templ = {
'name': 's3',
'resource': 's3',
'actions': [{'type': 'post-finding',
'types': ['Effects/CustomB/CustomA']}]}
self.load_policy(templ)
templ['actions'][0]['types'] = ['CustomA/CustomB/CustomC']
self.assertRaises(PolicyValidationError, self.load_policy, templ)
templ['actions'][0]['types'] = ['Effects/CustomB/CustomA/CustomD']
self.assertRaises(PolicyValidationError, self.load_policy, templ)
templ['actions'][0]['types'] = []
self.assertRaises(
PolicyValidationError, self.load_policy, templ, validate=True)
def test_s3_bucket_arn(self):
policy = self.load_policy({
'name': 's3',
'resource': 's3',
'actions': [
{'type': 'post-finding',
'types': [
"Software and Configuration Checks/AWS Security Best Practices/Network Reachability" # NOQA
]}]})
post_finding = policy.resource_manager.actions[0]
resource = post_finding.format_resource(
{'Name': 'xyz', 'CreationDate': 'xtf'})
self.assertEqual(resource['Id'], "arn:aws:s3:::xyz")
def test_bucket(self):
factory = self.replay_flight_data("test_security_hub_bucket")
policy = self.load_policy(
{
"name": "s3-finding",
"resource": "s3",
"filters": [],
"actions": [
{
"type": "post-finding",
'description': 'This one is important',
"types": [
"Software and Configuration Checks/AWS Security Best Practices/Network Reachability" # NOQA
],
}
],
},
config={"account_id": "644160558196"},
session_factory=factory,
)
def resources():
return [
{
"Name": "c7n-test-public-bucket",
"CreationDate": "2018-11-26T23:04:52.000Z",
}
]
self.patch(policy.resource_manager, "resources", resources)
resources = policy.run()
self.assertEqual(len(resources), 1)
client = factory().client("securityhub")
findings = client.get_findings(
Filters={
"ResourceAwsS3BucketOwnerId": [
{"Value": "Unknown", "Comparison": "EQUALS"}
],
"ResourceId": [
{
"Value": "arn:aws:::c7n-test-public-bucket",
"Comparison": "EQUALS",
}
],
}
).get("Findings")
self.assertEqual(len(findings), 1)
self.assertEqual(
findings[0]["Resources"][0],
{
"Details": {"AwsS3Bucket": {"OwnerId": "Unknown"}},
"Id": "arn:aws:::c7n-test-public-bucket",
"Region": "us-east-1",
"Type": "AwsS3Bucket",
},
)
def test_lambda(self):
# test lambda function via post finding gets tagged with finding id
factory = self.replay_flight_data('test_security_hub_lambda')
client = factory().client('lambda')
func = client.get_function(FunctionName='check')['Configuration']
def resources():
return [func]
policy = self.load_policy({
'name': 'sec-hub-lambda',
'resource': 'lambda',
'actions': [
{
"type": "post-finding",
"severity": 10,
"severity_normalized": 10,
"severity_label": "INFORMATIONAL",
"types": [
"Software and Configuration Checks/AWS Security Best Practices"
],
}]},
config={"account_id": "644160558196", 'region': 'us-east-2'},
session_factory=factory)
self.patch(policy.resource_manager, "resources", resources)
resources = policy.run()
self.assertEqual(len(resources), 1)
func_post_exec = client.get_function(FunctionName='check')
self.assertEqual(
func_post_exec['Tags']['c7n:FindingId:sec-hub-lambda'].split(":", 1)[0],
LambdaFindingId)
def test_lambda_update(self):
# test lambda function via post finding, uses tag to update finding.
factory = self.replay_flight_data('test_security_hub_lambda_update')
client = factory().client("securityhub", region_name='us-east-2')
finding_v1 = client.get_findings(
Filters={
"Id": [{
"Value": LambdaFindingId,
"Comparison": "EQUALS",
}]}).get("Findings")[0]
lambda_client = factory().client('lambda')
func = lambda_client.get_function(FunctionName='check')['Configuration']
def resources():
return [func]
policy = self.load_policy({
'name': 'sec-hub-lambda',
'resource': 'lambda',
'actions': [{
"type": "post-finding",
"severity": 10,
"severity_normalized": 10,
"types": [
"Software and Configuration Checks/AWS Security Best Practices"
],
}]},
config={"account_id": "644160558196", 'region': 'us-east-2'},
session_factory=factory)
self.patch(policy.resource_manager, "resources", resources)
resources = policy.run()
self.assertEqual(len(resources), 1)
if self.recording:
time.sleep(16)
finding_v2 = client.get_findings(
Filters={
"Id": [{
"Value": LambdaFindingId,
"Comparison": "EQUALS",
}]}).get("Findings")[0]
self.assertNotEqual(finding_v1['UpdatedAt'], finding_v2['UpdatedAt'])
def test_instance(self):
factory = self.replay_flight_data("test_security_hub_instance")
policy = self.load_policy(
{
"name": "ec2-finding",
"resource": "ec2",
"filters": [],
"actions": [
{
"type": "post-finding",
"severity": 10,
"severity_normalized": 10,
"types": [
"Software and Configuration Checks/AWS Security Best Practices"
],
}
],
},
config={"account_id": "644160558196"},
session_factory=factory,
)
resources = policy.run()
self.assertEqual(len(resources), 1)
client = factory().client("securityhub")
findings = client.get_findings(
Filters={
"ResourceId": [
{
"Value": "arn:aws:us-east-1:644160558196:instance/i-0fdc9cff318add68f",
"Comparison": "EQUALS",
}
]
}
).get("Findings")
self.assertEqual(len(findings), 1)
self.assertEqual(
findings[0]["Resources"][0],
{
"Details": {
"AwsEc2Instance": {
"IamInstanceProfileArn": "arn:aws:iam::644160558196:instance-profile/ecsInstanceRole", # NOQA
"ImageId": "ami-0ac019f4fcb7cb7e6",
"IpV4Addresses": ["10.205.2.134"],
"LaunchedAt": "2018-11-28T22:53:09+00:00",
"SubnetId": "subnet-07c118e47bb84cee7",
"Type": "t2.micro",
"VpcId": "vpc-03005fb9b8740263d",
}
},
"Id": "arn:aws:us-east-1:644160558196:instance/i-0fdc9cff318add68f",
"Region": "us-east-1",
"Tags": {"CreatorName": "kapil", "Name": "bar-run"},
"Type": "AwsEc2Instance",
},
)
def test_instance_findings_filter(self):
factory = self.replay_flight_data("test_security_hub_instance_findings_filter")
policy = self.load_policy(
{
"name": "ec2-findings-filter",
"resource": "ec2",
"filters": [{
"type": "finding",
"query": {
"Type": [{
"Value": "Software and Configuration Checks/AWS Security Best Practices", # NOQA
"Comparison": "EQUALS"}]
}
}],
},
config={"account_id": "101010101111"},
session_factory=factory,
)
resources = policy.run()
self.assertEqual(len(resources), 1)
def test_alb_findings_filter(self):
factory = self.replay_flight_data("test_security_hub_alb_findings_filter")
policy = self.load_policy(
{
"name": "alb-findings-filter",
"resource": "app-elb",
"filters": [{
"type": "finding",
"query": {
"Type": [{
"Value": "Software and Configuration Checks/AWS Security Best Practices", # NOQA
"Comparison": "EQUALS"
}]}
}],
},
config={"account_id": "101010101111"},
session_factory=factory,
)
resources = policy.run()
self.assertEqual(len(resources), 1)
def test_finding_ec2_arn(self):
# reuse another tests recorded data to get an ec2 instance
# not a best practice, avoid if practical.
factory = self.replay_flight_data("test_security_hub_instance")
client = factory().client('ec2')
instances = client.describe_instances().get('Reservations')[0]['Instances']
policy = self.load_policy({
'name': 'ec2',
'resource': 'ec2',
'actions': [{
'type': 'post-finding', 'severity': 10,
'types': ["Software and Configuration Checks/AWS Security Best Practices"]}]},
config={'region': 'us-east-1', 'account_id': '644160558196'})
post_finding = policy.resource_manager.actions.pop()
resource = post_finding.format_resource(instances[0])
self.assertEqual(
resource['Id'], 'arn:aws:ec2:us-east-1:644160558196:instance/i-0fdc9cff318add68f')
def test_iam_user(self):
factory = self.replay_flight_data("test_security_hub_iam_user")
policy = self.load_policy(
{
"name": "iam-user-finding",
"resource": "iam-user",
"filters": [],
"actions": [
{
"type": "post-finding",
"severity": 10,
"severity_normalized": 10,
"types": [
"Software and Configuration Checks/AWS Security Best Practices"
],
}
],
},
config={"account_id": "101010101111"},
session_factory=factory,
)
resources = policy.run()
self.assertEqual(len(resources), 1)
client = factory().client("securityhub")
findings = client.get_findings(
Filters={
"ResourceId": [
{
"Value": "arn:aws:iam::101010101111:user/developer",
"Comparison": "EQUALS",
}
]
}
).get("Findings")
self.assertEqual(len(findings), 1)
self.assertEqual(
findings[0]["Resources"][0],
{
"Region": "us-east-1",
"Type": "Other",
"Id": "arn:aws:iam::101010101111:user/developer",
"Details": {
"Other": {
"CreateDate": "2016-09-10T15:45:42+00:00",
"UserId": "AIDAJYFPV7WUG3EV7MIIO"
}
}
}
)
def test_iam_profile(self):
factory = self.replay_flight_data("test_security_hub_iam_profile")
policy = self.load_policy(
{
"name": "iam-profile-finding",
"resource": "iam-profile",
"filters": [{
"type": "value",
"key": "InstanceProfileName",
"value": "CloudCustodian"
}],
"actions": [
{
"type": "post-finding",
"severity": 10,
"severity_normalized": 10,
"types": [
"Software and Configuration Checks/AWS Security Best Practices"
],
}
],
},
config={"account_id": "101010101111"},
session_factory=factory,
)
resources = policy.run()
self.assertEqual(len(resources), 1)
client = factory().client("securityhub")
findings = client.get_findings(
Filters={
"ResourceId": [
{
"Value": "arn:aws:iam::101010101111:instance-profile/CloudCustodian",
"Comparison": "EQUALS",
}
]
}
).get("Findings")
self.assertEqual(len(findings), 1)
self.assertEqual(
findings[0]["Resources"][0],
{
"Region": "us-east-1",
"Type": "Other",
"Id": "arn:aws:iam::101010101111:instance-profile/CloudCustodian",
"Details": {
"Other": {
"InstanceProfileId": "AIPAJO63EBUVI2SO6IJFI",
"CreateDate": "2018-08-19T22:32:30+00:00",
"InstanceProfileName": "CloudCustodian",
"c7n:MatchedFilters": "[\"InstanceProfileName\"]"
}
}
}
)
def test_account(self):
factory = self.replay_flight_data("test_security_hub_account")
policy = self.load_policy(
{
"name": "account-finding",
"resource": "account",
"filters": [],
"actions": [
{
"type": "post-finding",
"severity": 10,
"severity_normalized": 10,
"types": [
"Software and Configuration Checks/AWS Security Best Practices"
],
}
],
},
config={"account_id": "101010101111"},
session_factory=factory,
)
resources = policy.run()
self.assertEqual(len(resources), 1)
client = factory().client("securityhub")
findings = client.get_findings(
Filters={
"ResourceId": [
{
"Value": "arn:aws:::101010101111:",
"Comparison": "EQUALS"
}
]
}
).get("Findings")
self.assertEqual(len(findings), 1)
self.assertEqual(
findings[0]["Resources"][0],
{
"Region": "us-east-1",
"Type": "Other",
"Id": "arn:aws:::101010101111:",
"Details": {
"Other": {
"account_name": "filiatra-primary"
}
}
}
)
def test_rds(self):
factory = self.replay_flight_data("test_security_hub_rds")
policy = self.load_policy(
{
"name": "rds-finding",
"resource": "rds",
"filters": [
{"DBInstanceArn": "arn:aws:rds:us-west-2:644160558196:db:test-instance-3"}],
"actions": [
{
"type": "post-finding",
"severity": 10,
"severity_normalized": 10,
"types": [
"Software and Configuration Checks/AWS Security Best Practices"
],
}
],
},
config={'region': 'us-west-2', 'account_id': '644160558196'},
session_factory=factory,
)
resources = policy.run()
self.assertEqual(len(resources), 1)
rfinding = policy.resource_manager.actions[0].format_resource(resources[0])
shape_validate(
rfinding['Details']['AwsRdsDbInstance'],
'AwsRdsDbInstanceDetails', 'securityhub')
client = factory().client("securityhub", region_name='us-west-2')
findings = client.get_findings(
Filters={
'Title': [
{
'Value': 'rds-finding',
'Comparison': 'EQUALS'
}
],
'ResourceId': [
{
'Value': 'arn:aws:rds:us-west-2:644160558196:db:test-instance-3',
'Comparison': 'EQUALS'
}
]
}
).get('Findings', [])
self.assertEqual(len(findings), 1)
self.assertEqual(
findings[0]["Resources"][0],
{
'Type': 'AwsRdsDbInstance',
'Id': 'arn:aws:rds:us-west-2:644160558196:db:test-instance-3',
'Region': 'us-west-2',
'Details': {
'AwsRdsDbInstance': {
'CACertificateIdentifier': 'rds-ca-2019',
'DBClusterIdentifier': 'test',
'DBInstanceIdentifier': 'test-instance-3',
'DBInstanceClass': 'db.m5d.xlarge',
'DbiResourceId': 'db-EH6SVXMILRMDTBVY4GNOOI3OL4',
'Engine': 'postgres',
'EngineVersion': '13.7',
'KmsKeyId': 'arn:aws:kms:us-west-2:644160558196:key/31e94e00-358a-4f53-8a0c-48ae90c8cc23', # noqa
'StorageEncrypted': True,
'VpcSecurityGroups': [
{
'VpcSecurityGroupId': 'sg-0e255aed9188d1fba',
'Status': 'active'
}
],
'MasterUsername': 'postgres',
'AllocatedStorage': 400,
'PreferredBackupWindow': '11:55-12:25',
'BackupRetentionPeriod': 7,
'AvailabilityZone': 'us-west-2b',
'PreferredMaintenanceWindow': 'tue:07:49-tue:08:19',
'LicenseModel': 'postgresql-license',
'Iops': 3000,
'OptionGroupMemberships': [
{
'OptionGroupName': 'default:postgres-13',
'Status': 'in-sync'
}
],
'StorageType': 'io1',
'PromotionTier': 1
}
}
}
)
def test_larger_batch_s3(self):
factory = self.replay_flight_data("test_larger_batch")
policy = self.load_policy(
{
"name": "ebs-finding",
"resource": "ebs-snapshot",
"filters": [],
"actions": [
{
"type": "post-finding",
"severity": 10,
"severity_normalized": 10,
"batch_size": 2,
"title": "EBS Testing",
"types": [
"Software and Configuration Checks/AWS Security Best Practices"
],
}
],
},
session_factory=factory,
)
resources = policy.run()
self.assertEqual(len(resources), 2)
client = factory().client("securityhub")
findings = client.get_findings(
Filters={
"Title": [
{
"Value": "EBS Testing",
"Comparison": "EQUALS",
}
]
}
).get("Findings")
self.assertEqual(len(findings), 2)