Files
prowler/prowler/lib/check/check.py
Sergio Garcia dbdce98cf2 feat(alibaba): add Alibaba Cloud provider (#9329)
Co-authored-by: pedrooot <pedromarting3@gmail.com>
Co-authored-by: HugoPBrito <hugopbrit@gmail.com>
2025-12-03 11:47:55 -05:00

732 lines
30 KiB
Python

import importlib
import json
import os
import re
import shutil
import sys
import traceback
from types import ModuleType
from typing import Any
from alive_progress import alive_bar
from colorama import Fore, Style
import prowler
from prowler.config.config import orange_color
from prowler.lib.check.custom_checks_metadata import update_check_metadata
from prowler.lib.check.models import Check, load_check_metadata
from prowler.lib.check.utils import recover_checks_from_provider
from prowler.lib.logger import logger
from prowler.lib.outputs.outputs import report
from prowler.lib.utils.utils import open_file, parse_json_file, print_boxes
from prowler.providers.common.models import Audit_Metadata
# Exclude checks to run
def exclude_checks_to_run(checks_to_execute: set, excluded_checks: list) -> set:
for check in excluded_checks:
checks_to_execute.discard(check)
return checks_to_execute
# Exclude services to run
def exclude_services_to_run(
checks_to_execute: set, excluded_services: list, provider: str
) -> set:
excluded_services = [
"awslambda" if service == "lambda" else service for service in excluded_services
]
# Recover checks from the input services
for service in excluded_services:
modules = recover_checks_from_provider(provider, service)
if not modules:
logger.error(f"Service '{service}' was not found for the AWS provider")
else:
for check_module in modules:
# Recover check name and module name from import path
# Format: "providers.{provider}.services.{service}.{check_name}.{check_name}"
check_name = check_module[0].split(".")[-1]
# Exclude checks from the input services
checks_to_execute.discard(check_name)
return checks_to_execute
# Load checks from checklist.json
def parse_checks_from_file(input_file: str, provider: str) -> set:
"""parse_checks_from_file returns a set of checks read from the given file"""
try:
checks_to_execute = set()
with open_file(input_file) as f:
json_file = parse_json_file(f)
for check_name in json_file[provider]:
checks_to_execute.add(check_name)
return checks_to_execute
except Exception as error:
logger.error(
f"{error.__class__.__name__}[{error.__traceback__.tb_lineno}] -- {error}"
)
# Load checks from custom folder
def parse_checks_from_folder(provider, input_folder: str) -> set:
# TODO: move the AWS-specific code into the provider
try:
custom_checks = set()
# Check if input folder is a S3 URI
if provider.type == "aws" and re.search(
"^s3://([^/]+)/(.*?([^/]+))/$", input_folder
):
bucket = input_folder.split("/")[2]
key = ("/").join(input_folder.split("/")[3:])
s3_resource = provider.session.current_session.resource("s3")
bucket = s3_resource.Bucket(bucket)
for obj in bucket.objects.filter(Prefix=key):
if not os.path.exists(os.path.dirname(obj.key)):
os.makedirs(os.path.dirname(obj.key))
if obj.key[-1] == "/":
continue
bucket.download_file(obj.key, obj.key)
input_folder = key
# Import custom checks by moving the checks folders to the corresponding services
with os.scandir(input_folder) as checks:
for check in checks:
if check.is_dir():
check_module = input_folder + "/" + check.name
# Copy checks to specific provider/service folder
check_service = check.name.split("_")[0]
prowler_dir = prowler.__path__
prowler_module = f"{prowler_dir[0]}/providers/{provider.type}/services/{check_service}/{check.name}"
if os.path.exists(prowler_module):
shutil.rmtree(prowler_module)
shutil.copytree(check_module, prowler_module)
custom_checks.add(check.name)
return custom_checks
except Exception as error:
logger.critical(
f"{error.__class__.__name__}[{error.__traceback__.tb_lineno}] -- {error}"
)
sys.exit(1)
def load_custom_checks_metadata(input_folder: str) -> dict:
"""
Load check metadata from a custom checks folder without copying the checks.
This is used to validate check names before the provider is initialized.
Args:
input_folder (str): Path to the folder containing custom checks.
Returns:
dict: A dictionary with CheckID as key and CheckMetadata as value.
"""
custom_checks_metadata = {}
try:
if not os.path.isdir(input_folder):
return custom_checks_metadata
with os.scandir(input_folder) as checks:
for check in checks:
if check.is_dir():
check_name = check.name
metadata_file = os.path.join(
input_folder, check_name, f"{check_name}.metadata.json"
)
if os.path.isfile(metadata_file):
try:
check_metadata = load_check_metadata(metadata_file)
custom_checks_metadata[check_metadata.CheckID] = (
check_metadata
)
except Exception as error:
logger.warning(
f"Could not load metadata from {metadata_file}: {error}"
)
return custom_checks_metadata
except Exception as error:
logger.error(
f"{error.__class__.__name__}[{error.__traceback__.tb_lineno}] -- {error}"
)
return custom_checks_metadata
# Load checks from custom folder
def remove_custom_checks_module(input_folder: str, provider: str):
# Check if input folder is a S3 URI
s3_uri = False
if provider == "aws" and re.search("^s3://([^/]+)/(.*?([^/]+))/$", input_folder):
input_folder = ("/").join(input_folder.split("/")[3:])
s3_uri = True
with os.scandir(input_folder) as checks:
for check in checks:
if check.is_dir():
# Remove imported checks
check_service = check.name.split("_")[0]
prowler_dir = prowler.__path__
prowler_module = f"{prowler_dir[0]}/providers/{provider}/services/{check_service}/{check.name}"
if os.path.exists(prowler_module):
shutil.rmtree(prowler_module)
# test if the service only had the loaded custom checks to delete the folder
prowler_service_module = prowler_module.rsplit("/", 1)[0]
if not os.listdir(prowler_service_module):
shutil.rmtree(prowler_service_module)
# If S3 URI, remove the downloaded folders
if s3_uri and os.path.exists(input_folder):
shutil.rmtree(input_folder)
def list_services(provider: str) -> set:
available_services = set()
checks_tuple = recover_checks_from_provider(provider)
for _, check_path in checks_tuple:
# Format: /absolute_path/prowler/providers/{provider}/services/{service_name}/{check_name}
if os.name == "nt":
service_name = check_path.split("\\")[-2]
else:
service_name = check_path.split("/")[-2]
available_services.add(service_name)
return sorted(available_services)
def list_fixers(provider: str) -> set:
available_fixers = set()
checks = recover_checks_from_provider(provider, include_fixers=True)
# Build list of check's metadata files
for check_info in checks:
# Build check path name
check_name = check_info[0]
# Ignore non fixer files
if not check_name.endswith("_fixer"):
continue
# Remove _fixer suffix
check_name = check_name.replace("_fixer", "")
available_fixers.add(check_name)
return sorted(available_fixers)
def list_categories(bulk_checks_metadata: dict) -> set:
available_categories = set()
for check in bulk_checks_metadata.values():
for cat in check.Categories:
if cat:
available_categories.add(cat)
return available_categories
def print_categories(categories: set):
categories_num = len(categories)
plural_string = f"\nThere are {Fore.YELLOW}{categories_num}{Style.RESET_ALL} available categories.\n"
singular_string = f"\nThere is {Fore.YELLOW}{categories_num}{Style.RESET_ALL} available category.\n"
message = plural_string if categories_num > 1 else singular_string
for category in sorted(categories):
print(f"- {category}")
print(message)
def print_services(service_list: set):
services_num = len(service_list)
plural_string = f"\nThere are {Fore.YELLOW}{services_num}{Style.RESET_ALL} available services.\n"
singular_string = (
f"\nThere is {Fore.YELLOW}{services_num}{Style.RESET_ALL} available service.\n"
)
message = plural_string if services_num > 1 else singular_string
for service in service_list:
print(f"- {service}")
print(message)
def print_fixers(fixers_list: set):
fixers_num = len(fixers_list)
plural_string = (
f"\nThere are {Fore.YELLOW}{fixers_num}{Style.RESET_ALL} available fixers.\n"
)
singular_string = (
f"\nThere is {Fore.YELLOW}{fixers_num}{Style.RESET_ALL} available fixer.\n"
)
message = plural_string if fixers_num > 1 else singular_string
for service in fixers_list:
print(f"- {service}")
print(message)
def print_compliance_frameworks(
bulk_compliance_frameworks: dict,
):
frameworks_num = len(bulk_compliance_frameworks.keys())
plural_string = f"\nThere are {Fore.YELLOW}{frameworks_num}{Style.RESET_ALL} available Compliance Frameworks.\n"
singular_string = f"\nThere is {Fore.YELLOW}{frameworks_num}{Style.RESET_ALL} available Compliance Framework.\n"
message = plural_string if frameworks_num > 1 else singular_string
for framework in sorted(bulk_compliance_frameworks.keys()):
print(f"- {framework}")
print(message)
def print_compliance_requirements(
bulk_compliance_frameworks: dict, compliance_frameworks: list
):
for compliance_framework in compliance_frameworks:
for key in bulk_compliance_frameworks.keys():
framework = bulk_compliance_frameworks[key].Framework
provider = bulk_compliance_frameworks[key].Provider
version = bulk_compliance_frameworks[key].Version
requirements = bulk_compliance_frameworks[key].Requirements
# We can list the compliance requirements for a given framework using the
# bulk_compliance_frameworks keys since they are the compliance specification file name
if compliance_framework == key:
print(
f"Listing {framework} {version} {provider} Compliance Requirements:\n"
)
for requirement in requirements:
checks = ""
for check in requirement.Checks:
checks += f" {Fore.YELLOW}\t\t{check}\n{Style.RESET_ALL}"
print(
f"Requirement Id: {Fore.MAGENTA}{requirement.Id}{Style.RESET_ALL}\n\t- Description: {requirement.Description}\n\t- Checks:\n{checks}"
)
def list_checks_json(provider: str, check_list: set):
try:
output = {provider: check_list}
return json.dumps(output, indent=2, default=str)
except Exception as e:
logger.critical(f"{e.__class__.__name__}[{e.__traceback__.tb_lineno}]: {e}")
sys.exit(1)
def print_checks(
provider: str,
check_list: set,
bulk_checks_metadata: dict,
):
for check in check_list:
try:
print(
f"[{bulk_checks_metadata[check].CheckID}] {bulk_checks_metadata[check].CheckTitle} - {Fore.MAGENTA}{bulk_checks_metadata[check].ServiceName} {Fore.YELLOW}[{bulk_checks_metadata[check].Severity.value}]{Style.RESET_ALL}"
)
except KeyError as error:
logger.error(
f"Check {error} was not found for the {provider.upper()} provider"
)
checks_num = len(check_list)
plural_string = (
f"\nThere are {Fore.YELLOW}{checks_num}{Style.RESET_ALL} available checks.\n"
)
singular_string = (
f"\nThere is {Fore.YELLOW}{checks_num}{Style.RESET_ALL} available check.\n"
)
message = plural_string if checks_num > 1 else singular_string
print(message)
# Import an input check using its path
def import_check(check_path: str) -> ModuleType:
lib = importlib.import_module(f"{check_path}")
return lib
def run_fixer(check_findings: list) -> int:
"""
Run the fixer for the check if it exists and there are any FAIL findings
Args:
check_findings (list): list of findings
Returns:
int: number of fixed findings
"""
try:
# Map findings to each check
findings_dict = {}
fixed_findings = 0
for finding in check_findings:
if finding.check_metadata.CheckID not in findings_dict:
findings_dict[finding.check_metadata.CheckID] = []
findings_dict[finding.check_metadata.CheckID].append(finding)
for check, findings in findings_dict.items():
# Check if there are any FAIL findings for the check
if any("FAIL" in finding.status for finding in findings):
try:
check_module_path = f"prowler.providers.{findings[0].check_metadata.Provider}.services.{findings[0].check_metadata.ServiceName}.{check}.{check}_fixer"
lib = import_check(check_module_path)
fixer = getattr(lib, "fixer")
except ModuleNotFoundError:
logger.error(f"Fixer method not implemented for check {check}")
else:
print(
f"\nFixing fails for check {Fore.YELLOW}{check}{Style.RESET_ALL}..."
)
for finding in findings:
if finding.status == "FAIL":
# Check what type of fixer is:
# - If it is a fixer for a specific resource and region
# - If it is a fixer for a specific region
# - If it is a fixer for a specific resource
if (
"region" in fixer.__code__.co_varnames
and "resource_id" in fixer.__code__.co_varnames
):
print(
f"\t{orange_color}FIXING{Style.RESET_ALL} {finding.resource_id} in {finding.region}... "
)
if fixer(
resource_id=finding.resource_id,
region=finding.region,
):
fixed_findings += 1
print(f"\t{Fore.GREEN}DONE{Style.RESET_ALL}")
else:
print(f"\t{Fore.RED}ERROR{Style.RESET_ALL}")
elif "region" in fixer.__code__.co_varnames:
print(
f"\t{orange_color}FIXING{Style.RESET_ALL} {finding.region}... "
)
if fixer(region=finding.region):
fixed_findings += 1
print(f"\t{Fore.GREEN}DONE{Style.RESET_ALL}")
else:
print(f"\t{Fore.RED}ERROR{Style.RESET_ALL}")
elif "resource_arn" in fixer.__code__.co_varnames:
print(
f"\t{orange_color}FIXING{Style.RESET_ALL} Resource {finding.resource_arn}... "
)
if fixer(resource_arn=finding.resource_arn):
fixed_findings += 1
print(f"\t{Fore.GREEN}DONE{Style.RESET_ALL}")
else:
print(f"\t{Fore.RED}ERROR{Style.RESET_ALL}")
else:
print(
f"\t{orange_color}FIXING{Style.RESET_ALL} Resource {finding.resource_id}... "
)
if fixer(resource_id=finding.resource_id):
fixed_findings += 1
print(f"\t\t{Fore.GREEN}DONE{Style.RESET_ALL}")
else:
print(f"\t\t{Fore.RED}ERROR{Style.RESET_ALL}")
return fixed_findings
except Exception as error:
logger.error(
f"{error.__class__.__name__}[{error.__traceback__.tb_lineno}]: {error}"
)
def execute_checks(
checks_to_execute: list,
global_provider: Any,
custom_checks_metadata: Any,
config_file: str,
output_options: Any,
) -> list:
# List to store all the check's findings
all_findings = []
# Services and checks executed for the Audit Status
services_executed = set()
checks_executed = set()
# Initialize the Audit Metadata
# TODO: this should be done in the provider class
global_provider.audit_metadata = Audit_Metadata(
services_scanned=0,
expected_checks=checks_to_execute,
completed_checks=0,
audit_progress=0,
)
# Refactor(CLI): This needs to be moved somewhere in the CLI
if os.name != "nt":
try:
from resource import RLIMIT_NOFILE, getrlimit, setrlimit
# Check ulimit for the maximum system open files
soft, hard = getrlimit(RLIMIT_NOFILE)
if soft < 4096:
logger.info(
f"Your session file descriptors limit ({soft} open files) is below 4096. Updating file descriptors session limit to 4096 during execution only."
)
# Set the soft ulimit to 4096
setrlimit(RLIMIT_NOFILE, (4096, hard))
except Exception as error:
logger.error("Unable to retrieve ulimit default settings")
logger.error(
f"{error.__class__.__name__}[{error.__traceback__.tb_lineno}]: {error}"
)
# Set verbose flag
verbose = False
if hasattr(output_options, "verbose"):
verbose = output_options.verbose
elif hasattr(output_options, "fixer"):
verbose = output_options.fixer
# Execution with the --only-logs flag
if output_options.only_logs:
for check_name in checks_to_execute:
# Recover service from check name
service = check_name.split("_")[0]
try:
try:
# Import check module
check_module_path = f"prowler.providers.{global_provider.type}.services.{service}.{check_name}.{check_name}"
lib = import_check(check_module_path)
# Recover functions from check
check_to_execute = getattr(lib, check_name)
check = check_to_execute()
except ModuleNotFoundError:
logger.error(
f"Check '{check_name}' was not found for the {global_provider.type.upper()} provider"
)
continue
if verbose:
print(
f"\nCheck ID: {check.CheckID} - {Fore.MAGENTA}{check.ServiceName}{Fore.YELLOW} [{check.Severity.value}]{Style.RESET_ALL}"
)
check_findings = execute(
check,
global_provider,
custom_checks_metadata,
output_options,
)
report(check_findings, global_provider, output_options)
all_findings.extend(check_findings)
# Update Audit Status
services_executed.add(service)
checks_executed.add(check_name)
global_provider.audit_metadata = update_audit_metadata(
global_provider.audit_metadata, services_executed, checks_executed
)
# If check does not exists in the provider or is from another provider
except ModuleNotFoundError:
logger.error(
f"Check '{check_name}' was not found for the {global_provider.type.upper()} provider"
)
except Exception as error:
logger.error(
f"{check_name} - {error.__class__.__name__}[{error.__traceback__.tb_lineno}]: {error}"
)
else:
# Prepare your messages
messages = [f"Config File: {Fore.YELLOW}{config_file}{Style.RESET_ALL}"]
if global_provider.mutelist.mutelist_file_path:
messages.append(
f"Mutelist File: {Fore.YELLOW}{global_provider.mutelist.mutelist_file_path}{Style.RESET_ALL}"
)
if global_provider.type == "aws":
messages.append(
f"Scanning unused services and resources: {Fore.YELLOW}{global_provider.scan_unused_services}{Style.RESET_ALL}"
)
report_title = (
f"{Style.BRIGHT}Using the following configuration:{Style.RESET_ALL}"
)
print_boxes(messages, report_title)
# Default execution
checks_num = len(checks_to_execute)
plural_string = "checks"
singular_string = "check"
check_noun = plural_string if checks_num > 1 else singular_string
print(
f"{Style.BRIGHT}Executing {checks_num} {check_noun}, please wait...{Style.RESET_ALL}"
)
with alive_bar(
total=len(checks_to_execute),
ctrl_c=False,
bar="blocks",
spinner="classic",
stats=False,
enrich_print=False,
) as bar:
for check_name in checks_to_execute:
# Recover service from check name
service = check_name.split("_")[0]
bar.title = (
f"-> Scanning {orange_color}{service}{Style.RESET_ALL} service"
)
try:
try:
# Import check module
check_module_path = f"prowler.providers.{global_provider.type}.services.{service}.{check_name}.{check_name}"
lib = import_check(check_module_path)
# Recover functions from check
check_to_execute = getattr(lib, check_name)
check = check_to_execute()
except ModuleNotFoundError:
logger.error(
f"Check '{check_name}' was not found for the {global_provider.type.upper()} provider"
)
continue
if verbose:
print(
f"\nCheck ID: {check.CheckID} - {Fore.MAGENTA}{check.ServiceName}{Fore.YELLOW} [{check.Severity.value}]{Style.RESET_ALL}"
)
check_findings = execute(
check,
global_provider,
custom_checks_metadata,
output_options,
)
report(check_findings, global_provider, output_options)
all_findings.extend(check_findings)
services_executed.add(service)
checks_executed.add(check_name)
global_provider.audit_metadata = update_audit_metadata(
global_provider.audit_metadata,
services_executed,
checks_executed,
)
# If check does not exists in the provider or is from another provider
except ModuleNotFoundError:
# TODO: add more loggin here, we need the original exception -- traceback.print_last()
logger.error(
f"Check '{check_name}' was not found for the {global_provider.type.upper()} provider"
)
except Exception as error:
# TODO: add more loggin here, we need the original exception -- traceback.print_last()
logger.error(
f"{check_name} - {error.__class__.__name__}[{error.__traceback__.tb_lineno}]: {error}"
)
bar()
bar.title = f"-> {Fore.GREEN}Scan completed!{Style.RESET_ALL}"
return all_findings
def execute(
check: Check,
global_provider: Any,
custom_checks_metadata: Any,
output_options: Any = None,
):
"""
Execute the check and report the findings
Args:
service (str): service name
check_name (str): check name
global_provider (Any): provider object
custom_checks_metadata (Any): custom checks metadata
output_options (Any): output options, depending on the provider
Returns:
list: list of findings
"""
try:
# Update check metadata to reflect that in the outputs
if custom_checks_metadata and custom_checks_metadata["Checks"].get(
check.CheckID
):
check = update_check_metadata(
check, custom_checks_metadata["Checks"][check.CheckID]
)
only_logs = False
if hasattr(output_options, "only_logs"):
only_logs = output_options.only_logs
# Execute the check
check_findings = []
logger.debug(f"Executing check: {check.CheckID}")
try:
check_findings = check.execute()
except Exception as error:
if not only_logs:
print(
f"Something went wrong in {check.CheckID}, please use --log-level ERROR"
)
logger.error(
f"{check.CheckID} -- {error.__class__.__name__}[{traceback.extract_tb(error.__traceback__)[-1].lineno}]: {error}"
)
# Exclude findings per status
if hasattr(output_options, "status") and output_options.status:
check_findings = [
finding
for finding in check_findings
if finding.status in output_options.status
]
# Before returning the findings, we need to apply the mute list logic
if hasattr(global_provider, "mutelist") and global_provider.mutelist.mutelist:
is_finding_muted_args = {}
if global_provider.type == "aws":
is_finding_muted_args["aws_account_id"] = (
global_provider.identity.account
)
elif global_provider.type == "kubernetes":
is_finding_muted_args["cluster"] = global_provider.identity.cluster
elif global_provider.type == "github":
is_finding_muted_args["account_name"] = (
global_provider.identity.account_name
)
elif global_provider.type == "m365":
is_finding_muted_args["tenant_id"] = global_provider.identity.tenant_id
elif global_provider.type == "mongodbatlas":
is_finding_muted_args["organization_id"] = (
global_provider.identity.organization_id
)
elif global_provider.type == "alibabacloud":
is_finding_muted_args["account_id"] = (
global_provider.identity.account_id
)
for finding in check_findings:
if global_provider.type == "azure":
is_finding_muted_args["subscription_id"] = (
global_provider.identity.subscriptions.get(finding.subscription)
)
is_finding_muted_args["finding"] = finding
finding.muted = global_provider.mutelist.is_finding_muted(
**is_finding_muted_args
)
except ModuleNotFoundError:
logger.error(
f"Check '{check.CheckID}' was not found for the {global_provider.type.upper()} provider"
)
check_findings = []
except Exception as error:
logger.error(
f"{error.__class__.__name__}[{error.__traceback__.tb_lineno}]: {error}"
)
return check_findings
def update_audit_metadata(
audit_metadata: Audit_Metadata, services_executed: set, checks_executed: set
) -> Audit_Metadata:
"""update_audit_metadata returns the audit_metadata updated with the new status
Updates the given audit_metadata using the length of the services_executed and checks_executed
"""
try:
audit_metadata.services_scanned = len(services_executed)
audit_metadata.completed_checks = len(checks_executed)
audit_metadata.audit_progress = (
100 * len(checks_executed) / len(audit_metadata.expected_checks)
)
return audit_metadata
except Exception as error:
logger.error(
f"{error.__class__.__name__}[{error.__traceback__.tb_lineno}]: {error}"
)