check_vulnerability.py

import subprocess

def get_lines_list(output: str):
    lines_list = []
    lines_str = output.split("\n")
    for line_str in lines_str:
        line = []
        for word in line_str.split(" "):
            if word != "":
                line.append(word)
        if line and line[0] != "udp":
            continue
        if line:
            lines_list.append(line)
    return lines_list


def check_cups_browsed_version():
    try:
        result = subprocess.run(
            ["netstat", "-anu"],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
            text=True
        )
        if result.returncode == 0:
            is_vulnerable = False
            local_add = "0.0.0.0:631"
            foreign_add = "0.0.0.0:*"
            lines_list = get_lines_list(result.stdout.strip())
            for line in lines_list:
                if line[3] == local_add and line[4] == foreign_add:
                    is_vulnerable = True
                    print("You are vulnerable!")
            if not is_vulnerable:
                print("You are NOT vulnerable.")

        else:
            print(f"Error: {result.stderr.strip()}")
    except FileNotFoundError:
        print("net-tool is not installed.")

if __name__ == "__main__":
    check_cups_browsed_version()