Check which AWS EC2 Security Groups allow unrestricted SSH Access: SOC2 Compliance

This task is designed to audit AWS environments for SOC2 compliance. It systematically identifies security groups in running EC2 instances that permit unrestricted SSH access, flagging potential security vulnerabilities and aiding in maintaining SOC2 compliance standards.

import boto3 from botocore.exceptions import NoCredentialsError, ClientError creds = _get_creds(cred_label)['creds'] access_key = creds['username'] secret_key = creds['password'] def check_ssh_access(security_group, ec2): try: sg = ec2.describe_security_groups(GroupIds=[security_group])['SecurityGroups'][0] for permission in sg.get('IpPermissions', []): if permission.get('FromPort') == 22 and permission.get('ToPort') == 22: for ip_range in permission.get('IpRanges', []): if ip_range.get('CidrIp') == '0.0.0.0/0': return True return False except Exception as e: print(f"Error checking security group {security_group}: {e}") return False def get_security_groups_in_use(ec2): sg_in_use = set() try: instances = ec2.describe_instances( Filters=[{'Name': 'instance-state-name', 'Values': ['running']}] ) for reservation in instances.get('Reservations', []): for instance in reservation.get('Instances', []): for sg in instance.get('SecurityGroups', []): sg_in_use.add(sg['GroupId']) return sg_in_use except Exception as e: print(f"Error retrieving instances: {e}") return sg_in_use def check_region_for_unrestricted_ssh(region, sgs_to_remediate): ec2 = boto3.client('ec2', aws_access_key_id=access_key,aws_secret_access_key=secret_key,region_name=region) print(f"Checking region: {region}") sg_in_use = get_security_groups_in_use(ec2) unrestricted_ssh = [sg_id for sg_id in sg_in_use if check_ssh_access(sg_id, ec2)] if unrestricted_ssh: print(f"Region {region}: Security Groups with unrestricted SSH access:") for sg_id in unrestricted_ssh: print(sg_id) sgs_to_remediate[region] = unrestricted_ssh else: print(f"Region {region}: No security groups with unrestricted SSH access found.") def check_all_regions(region_name=None): sgs_to_remediate = {} if region_name: check_region_for_unrestricted_ssh(region_name, sgs_to_remediate) else: ec2 = boto3.client('ec2',aws_access_key_id=access_key,aws_secret_access_key=secret_key,region_name='us-east-1') regions = [region['RegionName'] for region in ec2.describe_regions()['Regions']] for region in regions: check_region_for_unrestricted_ssh(region, sgs_to_remediate) return sgs_to_remediate try: region_name = None # Set to specific region or None for all regions sgs_to_remediate = check_all_regions(region_name) print("Security Groups to Remediate:", sgs_to_remediate) except NoCredentialsError: print("Error: AWS credentials not available. Please configure them.") except ClientError as e: print(f"AWS Client error: {e}") except Exception as e: print(f"An unexpected error occurred: {e}") context.skip_sub_tasks=True

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AWS EC2 security group SSH SOC2 Guideline

1jglVdOlHBGzIXnjIlluVRemediate AWS EC2 Security Groups with unrestricted SSH Access: SOC2 Compliance
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Remediate AWS EC2 Security Groups with unrestricted SSH Access: SOC2 Compliance
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This task identifies and corrects security groups in AWS EC2, which allow unrestricted SSH access.
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import boto3 from botocore.exceptions import ClientError, BotoCoreError creds = _get_creds(cred_label)['creds'] access_key = creds['username'] secret_key = creds['password'] def remove_unrestricted_ssh(security_group_id, region): """ This function attempts to remove unrestricted SSH access from the specified security group. :param security_group_id: The ID of the AWS security group. :param region: The AWS region where the security group is located. :return: Boolean indicating whether the unrestricted SSH access was successfully removed. """ # Initialize the boto3 client for EC2 in the specified region. ec2 = boto3.client('ec2',aws_access_key_id=access_key,aws_secret_access_key=secret_key, region_name=region) try: # Retrieve the details of the specified security group. sg = ec2.describe_security_groups(GroupIds=[security_group_id])['SecurityGroups'][0] # Iterate over the ingress permissions of the security group. for permission in sg.get('IpPermissions', []): # Check for SSH access (port 22) from anywhere (0.0.0.0/0). if permission.get('FromPort') == 22 and permission.get('ToPort') == 22: for ip_range in permission.get('IpRanges', []): if ip_range.get('CidrIp') == '0.0.0.0/0': # Revoke the ingress rule that allows unrestricted SSH access. ec2.revoke_security_group_ingress( GroupId=security_group_id, IpPermissions=[{ 'FromPort': 22, 'ToPort': 22, 'IpProtocol': 'tcp', 'IpRanges': [{'CidrIp': '0.0.0.0/0'}] }] ) print(f"Removed unrestricted SSH access from {security_group_id} in {region}") return True # If no unrestricted SSH access is found. print(f"No unrestricted SSH access found for {security_group_id} in {region}") return False except ClientError as e: # Handle client errors, such as incorrect permissions or non-existent resources. print(f"ClientError modifying security group {security_group_id} in {region}: {e}") return False except BotoCoreError as e: # Handle errors from the core Boto3 library. print(f"BotoCoreError encountered: {e}") return False except Exception as e: # Catch-all for any other unexpected exceptions. print(f"An unexpected error occurred: {e}") return False def remediate_unrestricted_ssh(sgs_to_remediate): """ :param sgs_to_remediate: A dictionary where keys are AWS region names and values are lists of security group IDs. """ for region, sg_ids in sgs_to_remediate.items(): for sg_id in sg_ids: # Attempt to remediate each security group. remove_unrestricted_ssh(sg_id, region) # Example usage #sgs_to_remediate = {'us-west-2': ['sg-4232c07a']} # from upstream task remediate_unrestricted_ssh(sgs_to_remediate)
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AWS EC2 security group SOC2 Guideline
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Check which AWS EC2 Security Groups allow unrestricted SSH Access: SOC2 Compliance

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