import json import math import re import hashlib import datetime import base64 import html from typing import Dict, List, Optional, Any, Union class AuthenticationSecurityAssessment: """ Authentication flow security assessment module Tests authentication bypass techniques, evaluates password policies, and identifies weak authentication mechanisms """ def __init__(self): self.vulnerabilities = [] self.test_results = {} def test_password_policies(self, password_requirements: Dict) -> Dict: """Test password strength and policy enforcement""" results = { "weak_passwords_found": 0, "policy_gaps": [], "recommendations": [] } # Test weak passwords weak_passwords = ["123456", "password", "admin", "qwerty", "letmein"] for pwd in weak_passwords: if self._check_password_strength(pwd, password_requirements): results["weak_passwords_found"] += 1 results["policy_gaps"].append(f"Password '{pwd}' passes validation") # Check minimum length requirements if password_requirements.get("min_length", 0) < 8: results["policy_gaps"].append("Minimum password length too short") results["recommendations"].append("Set minimum length to 8+ characters") # Check complexity requirements if not password_requirements.get("require_special_chars"): results["policy_gaps"].append("No special character requirement") results["recommendations"].append("Require special characters in passwords") return results def test_brute_force_protection(self, config: Dict) -> Dict: """Test brute force attack protection mechanisms""" results = { "rate_limiting": "unknown", "account_lockout": "unknown", "vulnerabilities": [] } # Check rate limiting configuration max_attempts = config.get("max_login_attempts", 0) lockout_duration = config.get("lockout_duration", 0) if max_attempts == 0 or max_attempts > 10: results["vulnerabilities"].append("No effective rate limiting") results["rate_limiting"] = "vulnerable" else: results["rate_limiting"] = "configured" if lockout_duration < 300: # 5 minutes results["vulnerabilities"].append("Account lockout duration too short") results["account_lockout"] = "weak" else: results["account_lockout"] = "proper" return results def test_authentication_bypass(self, auth_config: Dict) -> Dict: """Test common authentication bypass techniques""" results = { "bypass_attempts": [], "vulnerabilities_found": [], "risk_level": "low" } # Test SQL injection bypass bypass_payloads = [ "' OR '1'='1", "admin'--", "' OR 'x'='x", "1' UNION SELECT 'admin','password'--" ] for payload in bypass_payloads: if self._test_bypass_payload(payload, auth_config): results["bypass_attempts"].append(f"SQL injection: {payload}") results["vulnerabilities_found"].append("SQL injection bypass possible") # Test default credentials default_creds = [ {"username": "admin", "password": "admin"}, {"username": "root", "password": "root"}, {"username": "admin", "password": "password"}, {"username": "guest", "password": "guest"} ] for cred in default_creds: if self._test_default_credentials(cred, auth_config): results["bypass_attempts"].append(f"Default credentials: {cred}") results["vulnerabilities_found"].append("Default credentials not changed") # Calculate risk level if len(results["vulnerabilities_found"]) > 0: results["risk_level"] = "high" if len(results["vulnerabilities_found"]) > 2 else "medium" return results def _check_password_strength(self, password: str, requirements: Dict) -> bool: """Check if password meets requirements (for testing weak passwords)""" min_length = requirements.get("min_length", 6) if len(password) < min_length: return False if requirements.get("require_uppercase") and not any(c.isupper() for c in password): return False if requirements.get("require_lowercase") and not any(c.islower() for c in password): return False if requirements.get("require_numbers") and not any(c.isdigit() for c in password): return False if requirements.get("require_special_chars") and not re.search(r'[!@#$%^&*(),.?":{}|<>]', password): return False return True def _test_bypass_payload(self, payload: str, config: Dict) -> bool: """Simulate bypass payload testing""" # Simulate basic input validation check input_validation = config.get("input_validation", {}) sanitize_sql = input_validation.get("sanitize_sql_inputs", True) if not sanitize_sql: return True # Check for SQL keywords sql_keywords = ["OR", "UNION", "SELECT", "--", "'"] sanitized = html.escape(payload) # Simulate vulnerability detection if not sanitized and any(keyword in payload.upper() for keyword in sql_keywords): return True return False def _test_default_credentials(self, credentials: Dict, config: Dict) -> bool: """Test if default credentials work""" # Simulate credential checking default_creds_changed = config.get("default_credentials_changed", True) if not default_creds_changed: # Check against common default credentials default_list = [ {"username": "admin", "password": "admin"}, {"username": "root", "password": "root"} ] return credentials in default_list return False def generate_assessment_report(self) -> Dict: """Generate comprehensive authentication security report""" report = { "assessment_date": datetime.datetime.now().isoformat(), "assessment_type": "authentication_security", "vulnerabilities": self.vulnerabilities, "test_results": self.test_results, "risk_summary": self._calculate_risk_summary() } return report def _calculate_risk_summary(self) -> Dict: """Calculate overall risk summary""" total_vulnerabilities = len(self.vulnerabilities) if total_vulnerabilities == 0: risk_level = "low" elif total_vulnerabilities <= 3: risk_level = "medium" else: risk_level = "high" return { "risk_level": risk_level, "vulnerability_count": total_vulnerabilities, "critical_issues": [v for v in self.vulnerabilities if v.get("severity") == "critical"] } def demo_authentication_assessment(): """Demonstration of authentication security assessment""" assessor = AuthenticationSecurityAssessment() # Test 1: Password policies password_config = { "min_length": 6, "require_uppercase": False, "require_lowercase": True, "require_numbers": False, "require_special_chars": False } password_results = assessor.test_password_policies(password_config) assessor.test_results["password_policies"] = password_results # Test 2: Brute force protection brute_force_config = { "max_login_attempts": 15, "lockout_duration": 180 } brute_force_results = assessor.test_brute_force_protection(brute_force_config) assessor.test_results["brute_force_protection"] = brute_force_results # Test 3: Authentication bypass auth_config = { "input_validation": { "sanitize_sql_inputs": False }, "default_credentials_changed": False } bypass_results = assessor.test_authentication_bypass(auth_config) assessor.test_results["authentication_bypass"] = bypass_results # Collect vulnerabilities if password_results["weak_passwords_found"] > 0: assessor.vulnerabilities.append({ "type": "weak_password_policy", "severity": "medium", "description": f"Found {password_results['weak_passwords_found']} weak passwords that pass validation" }) if len(brute_force_results["vulnerabilities"]) > 0: assessor.vulnerabilities.append({ "type": "brute_force_vulnerability", "severity": "high", "description": "Insufficient brute force protection" }) if len(bypass_results["vulnerabilities_found"]) > 0: assessor.vulnerabilities.append({ "type": "authentication_bypass", "severity": "critical", "description": "Authentication bypass techniques successful" }) return assessor.generate_assessment_report() if __name__ == "__main__": # Run demonstration auth_report = demo_authentication_assessment() print("Authentication Security Assessment Results:") print(json.dumps(auth_report, indent=2))