def test_is_public_ip(self):
assert_true(is_public_ip("1.1.1.1"))
assert_false(is_public_ip("10.0.0.0"))
def get_public_nodes(account, config, use_cache=False):
# TODO Look for IPv6 also
# TODO Look at more services from https://github.com/arkadiyt/aws_public_ips
# TODO Integrate into something to more easily port scan and screenshot web services
# Try reading from cache
cache_file_path = "account-data/{}/public_nodes.json".format(account["name"])
if use_cache and os.path.isfile(cache_file_path):
with open(cache_file_path) as f:
return json.load(f), []
# Get the data from the `prepare` command
outputfilter = {
"internal_edges": False,
"read_replicas": False,
"inter_rds_edges": False,
"azs": False,
"collapse_by_tag": None,
"collapse_asgs": True,
"mute": True,
}
network = build_data_structure(account, config, outputfilter)
public_nodes = []
warnings = []
# Look at all the edges for ones connected to the public Internet (0.0.0.0/0)
for edge in pyjq.all(
'.[].data|select(.type=="edge")|select(.source=="0.0.0.0/0")', network
):
# Find the node at the other end of this edge
target = {"arn": edge["target"], "account": account["name"]}
target_node = pyjq.first(
'.[].data|select(.id=="{}")'.format(target["arn"]), network, {}
)
# Depending on the type of node, identify what the IP or hostname is
if target_node["type"] == "elb":
target["type"] = "elb"
target["hostname"] = target_node["node_data"]["DNSName"]
elif target_node["type"] == "elbv2":
target["type"] = "elbv2"
target["hostname"] = target_node["node_data"]["DNSName"]
elif target_node["type"] == "autoscaling":
target["type"] = "autoscaling"
target["hostname"] = target_node["node_data"].get("PublicIpAddress", "")
if target["hostname"] == "":
target["hostname"] = target_node["node_data"]["PublicDnsName"]
elif target_node["type"] == "rds":
target["type"] = "rds"
target["hostname"] = target_node["node_data"]["Endpoint"]["Address"]
elif target_node["type"] == "ec2":
target["type"] = "ec2"
dns_name = target_node["node_data"].get("PublicDnsName", "")
target["hostname"] = target_node["node_data"].get(
"PublicIpAddress", dns_name
)
target["tags"] = target_node["node_data"].get("Tags", [])
elif target_node["type"] == "ecs":
target["type"] = "ecs"
target["hostname"] = ""
for ip in target_node["node_data"]["ips"]:
if is_public_ip(ip):
target["hostname"] = ip
elif target_node["type"] == "redshift":
target["type"] = "redshift"
target["hostname"] = (
target_node["node_data"].get("Endpoint", {}).get("Address", "")
)
else:
# Unknown node
raise Exception("Unknown type: {}".format(target_node["type"]))
# Check if any protocol is allowed (indicated by IpProtocol == -1)
ingress = pyjq.all(".[]", edge.get("node_data", {}))
sg_group_allowing_all_protocols = pyjq.first(
'.[]|select(.IpPermissions[]?|.IpProtocol=="-1")|.GroupId', ingress, None
)
public_sgs = {}
if sg_group_allowing_all_protocols is not None:
warnings.append(
"All protocols allowed access to {} due to {}".format(
target, sg_group_allowing_all_protocols
)
)
# I would need to redo this code in order to get the name of the security group
public_sgs[sg_group_allowing_all_protocols] = {"public_ports": "0-65535"}
# from_port and to_port mean the beginning and end of a port range
# We only care about TCP (6) and UDP (17)
# For more info see https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/security-group-rules-reference.html
port_ranges = []
for sg in ingress:
sg_port_ranges = []
for ip_permission in sg.get("IpPermissions", []):
selection = 'select((.IpProtocol=="tcp") or (.IpProtocol=="udp")) | select(.IpRanges[].CidrIp=="0.0.0.0/0")'
sg_port_ranges.extend(
pyjq.all("{}| [.FromPort,.ToPort]".format(selection), ip_permission)
)
selection = 'select(.IpProtocol=="-1") | select(.IpRanges[].CidrIp=="0.0.0.0/0")'
sg_port_ranges.extend(
pyjq.all("{}| [0,65535]".format(selection), ip_permission)
)
public_sgs[sg["GroupId"]] = {
"GroupId": sg["GroupId"],
"GroupName": sg["GroupName"],
"public_ports": port_ranges_string(regroup_ranges(sg_port_ranges)),
}
port_ranges.extend(sg_port_ranges)
range_string = port_ranges_string(regroup_ranges(port_ranges))
target["ports"] = range_string
target["public_sgs"] = public_sgs
if target["ports"] == "":
issue_msg = "No ports open for tcp or udp (probably can only be pinged). Rules that are not tcp or udp: {} -- {}"
warnings.append(
issue_msg.format(
json.dumps(
pyjq.all(
'.[]|select((.IpProtocol!="tcp") and (.IpProtocol!="udp"))'.format(
selection
),
ingress,
)
),
account,
)
)
public_nodes.append(target)
# For the network diagram, if an ELB has availability across 3 subnets, I put one node in each subnet.
# We don't care about that when we want to know what is public and it makes it confusing when you
# see 3 resources with the same hostname, when you view your environment as only having one ELB.
# This same issue exists for RDS.
# Reduce these to single nodes.
reduced_nodes = {}
for node in public_nodes:
reduced_nodes[node["hostname"]] = node
public_nodes = []
for _, node in reduced_nodes.items():
public_nodes.append(node)
account = Account(None, account)
for region_json in get_regions(account):
region = Region(account, region_json)
# Look for CloudFront
if region.name == "us-east-1":
json_blob = query_aws(
region.account, "cloudfront-list-distributions", region
)
for distribution in json_blob.get("DistributionList", {}).get("Items", []):
if not distribution["Enabled"]:
continue
target = {"arn": distribution["ARN"], "account": account.name}
target["type"] = "cloudfront"
target["hostname"] = distribution["DomainName"]
target["ports"] = "80,443"
public_nodes.append(target)
# Look for API Gateway
json_blob = query_aws(region.account, "apigateway-get-rest-apis", region)
if json_blob is not None:
for api in json_blob.get("items", []):
target = {"arn": api["id"], "account": account.name}
target["type"] = "apigateway"
target["hostname"] = "{}.execute-api.{}.amazonaws.com".format(
api["id"], region.name
)
target["ports"] = "80,443"
public_nodes.append(target)
# Write cache file
with open(cache_file_path, "w") as f:
f.write(json.dumps(public_nodes, indent=4, sort_keys=True))
return public_nodes, warnings
def get_public_nodes(account, config, use_cache=False):
# TODO Look for IPv6 also
# TODO Look at more services from https://github.com/arkadiyt/aws_public_ips
# TODO Integrate into something to more easily port scan and screenshot web services
# Try reading from cache
cache_file_path = 'account-data/{}/public_nodes.json'.format(
account['name'])
if use_cache:
if os.path.isfile(cache_file_path):
with open(cache_file_path) as f:
return json.load(f), []
# Get the data from the `prepare` command
outputfilter = {
'internal_edges': False,
'read_replicas': False,
'inter_rds_edges': False,
'azs': False,
'collapse_by_tag': None,
'collapse_asgs': True,
'mute': True
}
network = build_data_structure(account, config, outputfilter)
public_nodes = []
warnings = []
# Look at all the edges for ones connected to the public Internet (0.0.0.0/0)
for edge in pyjq.all(
'.[].data|select(.type=="edge")|select(.source=="0.0.0.0/0")',
network):
# Find the node at the other end of this edge
target = {'arn': edge['target'], 'account': account['name']}
target_node = pyjq.first(
'.[].data|select(.id=="{}")'.format(target['arn']), network, {})
# Depending on the type of node, identify what the IP or hostname is
if target_node['type'] == 'elb':
target['type'] = 'elb'
target['hostname'] = target_node['node_data']['DNSName']
elif target_node['type'] == 'elbv2':
target['type'] = 'elbv2'
target['hostname'] = target_node['node_data']['DNSName']
elif target_node['type'] == 'autoscaling':
target['type'] = 'autoscaling'
target['hostname'] = target_node['node_data'].get(
'PublicIpAddress', '')
if target['hostname'] == '':
target['hostname'] = target_node['node_data']['PublicDnsName']
elif target_node['type'] == 'rds':
target['type'] = 'rds'
target['hostname'] = target_node['node_data']['Endpoint'][
'Address']
elif target_node['type'] == 'ec2':
target['type'] = 'ec2'
dns_name = target_node['node_data'].get('PublicDnsName', '')
target['hostname'] = target_node['node_data'].get(
'PublicIpAddress', dns_name)
elif target_node['type'] == 'ecs':
target['type'] = 'ecs'
target['hostname'] = ''
for ip in target_node['node_data']['ips']:
if is_public_ip(ip):
target['hostname'] = ip
elif target_node['type'] == 'redshift':
target['type'] = 'redshift'
target['hostname'] = target_node['node_data'].get(
'Endpoint', {}).get('Address', '')
else:
# Unknown node
raise Exception('Unknown type: {}'.format(target_node['type']))
# Check if any protocol is allowed (indicated by IpProtocol == -1)
ingress = pyjq.all('.[]', edge.get('node_data', {}))
sg_group_allowing_all_protocols = pyjq.first(
'select(.IpPermissions[]|.IpProtocol=="-1")|.GroupId', ingress,
None)
public_sgs = {}
if sg_group_allowing_all_protocols is not None:
warnings.append(
'All protocols allowed access to {} due to {}'.format(
target, sg_group_allowing_all_protocols))
range_string = '0-65535'
# I would need to redo this code in order to get the name of the security group
public_sgs[sg_group_allowing_all_protocols] = {
'public_ports': '0-65535'
}
else:
# from_port and to_port mean the beginning and end of a port range
# We only care about TCP (6) and UDP (17)
# For more info see https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/security-group-rules-reference.html
port_ranges = []
for sg in ingress:
sg_port_ranges = []
for ip_permission in sg['IpPermissions']:
selection = 'select((.IpProtocol=="tcp") or (.IpProtocol=="udp")) | select(.IpRanges[].CidrIp=="0.0.0.0/0")'
sg_port_ranges.extend(
pyjq.all('{}| [.FromPort,.ToPort]'.format(selection),
ip_permission))
public_sgs[sg['GroupId']] = {
'GroupName':
sg['GroupName'],
'public_ports':
port_ranges_string(regroup_ranges(sg_port_ranges))
}
port_ranges.extend(sg_port_ranges)
range_string = port_ranges_string(regroup_ranges(port_ranges))
target['ports'] = range_string
target['public_sgs'] = public_sgs
if target['ports'] == "":
issue_msg = 'No ports open for tcp or udp (probably can only be pinged). Rules that are not tcp or udp: {} -- {}'
warnings.append(
issue_msg.format(
json.dumps(
pyjq.all(
'.[]|select((.IpProtocol!="tcp") and (.IpProtocol!="udp"))'
.format(selection), ingress)), account))
public_nodes.append(target)
# For the network diagram, if an ELB has availability across 3 subnets, I put one node in each subnet.
# We don't care about that when we want to know what is public and it makes it confusing when you
# see 3 resources with the same hostname, when you view your environment as only having one ELB.
# This same issue exists for RDS.
# Reduce these to single nodes.
reduced_nodes = {}
for node in public_nodes:
reduced_nodes[node['hostname']] = node
public_nodes = []
for _, node in reduced_nodes.items():
public_nodes.append(node)
account = Account(None, account)
for region_json in get_regions(account):
region = Region(account, region_json)
# Look for CloudFront
if region.name == 'us-east-1':
json_blob = query_aws(region.account,
'cloudfront-list-distributions', region)
for distribution in json_blob.get('DistributionList',
{}).get('Items', []):
if not distribution['Enabled']:
continue
target = {'arn': distribution['ARN'], 'account': account.name}
target['type'] = 'cloudfront'
target['hostname'] = distribution['DomainName']
target['ports'] = '80,443'
public_nodes.append(target)
# Look for API Gateway
json_blob = query_aws(region.account, 'apigateway-get-rest-apis',
region)
if json_blob is not None:
for api in json_blob.get('items', []):
target = {'arn': api['id'], 'account': account.name}
target['type'] = 'apigateway'
target['hostname'] = '{}.execute-api.{}.amazonaws.com'.format(
api['id'], region.name)
target['ports'] = '80,443'
public_nodes.append(target)
# Write cache file
with open(cache_file_path, 'w') as f:
f.write(json.dumps(public_nodes, indent=4, sort_keys=True))
return public_nodes, warnings
