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38 changes: 38 additions & 0 deletions hammer/library/aws/security_groups.py
Original file line number Diff line number Diff line change
Expand Up @@ -342,6 +342,44 @@ def restrict(self, status=None):
processed += 1
return processed

@staticmethod
def build_open_ports_table(account, sg_id):
args = {'DryRun': False}
if sg_id:
args['GroupIds'] = [sg_id]
try:
secgroups = account.client("ec2").describe_security_groups(**args)["SecurityGroups"]
except ClientError as err:
if err.response['Error']['Code'] in ["AccessDenied", "UnauthorizedOperation"]:
logging.error(f"Access denied in {account} "
f"(ec2:{err.operation_name})")
elif err.response['Error']['Code'] == "InvalidGroup.NotFound":
logging.error(err.response['Error']['Message'])
return False
else:
logging.exception(f"Failed to describe security groups in {account}")
return False

port_details = "||From Port||To Port||Protocol||CIDR||\n"

for security_group in secgroups:
permissions_source = security_group["IpPermissions"]
for ingress in permissions_source:
protocol = ingress["IpProtocol"]
if protocol == "-1" or protocol not in ["tcp", "udp", "icmp", "icmpv6", "58"]:
from_port = None
to_port = None
else:
from_port = ingress.get("FromPort", 0)
to_port = ingress.get("ToPort", 65535)
ip_ranges = [ip_range["CidrIp"] for ip_range in ingress["IpRanges"]]
ip_ranges += [ip_range["CidrIpv6"] for ip_range in ingress.get("Ipv6Ranges", [])]

for ip_range in ip_ranges:
port_details += f"|{from_port}|{to_port}|{protocol}|{ip_range}|"
port_details += "\n"
return port_details


class SecurityGroup(object):
"""
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -5,12 +5,12 @@
import logging
import argparse


from botocore.exceptions import ClientError
from library.logger import set_logging, add_cw_logging
from library.config import Config
from library.jiraoperations import JiraReporting
from library.slack_utility import SlackNotification
from library.aws.security_groups import SecurityGroupsChecker, RestrictionStatus
from library.aws.security_groups import SecurityGroupsChecker, RestrictionStatus, SecurityGroupPermission
from library.aws.utility import Account
from library.ddb_issues import Operations as IssueOperations
from library.ddb_issues import IssueStatus, SecurityGroupIssue
Expand Down Expand Up @@ -114,7 +114,10 @@ def clean_security_groups(self, batch=False):
f"[{backup_path}|https://s3.console.aws.amazon.com/s3/object/{backup_bucket}/{backup_path}]. "
f"Security group '{group_name} / {group_id}' `{RestrictionStatus.OpenCompletely.value}` issue "
f"in '{account_name} / {account_id}' account, '{group_region}' region "
f"was remediated by hammer")
f"was remediated by hammer.")

comment += "\n\n After remediation, Security Group has access to following ports: \n"
comment += SecurityGroupPermission.build_open_ports_table(account, group_id)

if comment is not None:
jira.remediate_issue(
Expand Down