OSError: [Errno 24] Too many open files

[nawabs11]

Found an issue "OSError: [Errno 24] Too many open files" while executing on a MAC, likely as the script attempts to create a large number of concurrent threads and sockets, leading to this issue.

[nawabs11]

`import socket
import argparse
import ipaddress
import threading
from queue import Queue
from concurrent.futures import ThreadPoolExecutor, as_completed

def get_ssh_sock(ip, port, timeout):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.settimeout(timeout)
try:
sock.connect((ip, port))
return sock
except:
return None

def get_ssh_banner(sock):
try:
banner = sock.recv(1024).decode().strip()
sock.close()
return banner
except Exception as e:
return str(e)

def check_vulnerability(ip, port, timeout, result_queue):
sshsock = get_ssh_sock(ip, port, timeout)
if not sshsock:
result_queue.put((ip, port, 'closed', "Port closed"))
return

banner = get_ssh_banner(sshsock)
if "SSH-2.0-OpenSSH" not in banner:
    result_queue.put((ip, port, 'failed', f"Failed to retrieve SSH banner: {banner}"))
    return

vulnerable_versions = [
    'SSH-2.0-OpenSSH_8.5',
    'SSH-2.0-OpenSSH_8.6',
    'SSH-2.0-OpenSSH_8.7',
    'SSH-2.0-OpenSSH_8.8',
    'SSH-2.0-OpenSSH_8.9',
    'SSH-2.0-OpenSSH_9.0',
    'SSH-2.0-OpenSSH_9.1',
    'SSH-2.0-OpenSSH_9.2',
    'SSH-2.0-OpenSSH_9.3',
    'SSH-2.0-OpenSSH_9.4',
    'SSH-2.0-OpenSSH_9.5',
    'SSH-2.0-OpenSSH_9.6',
    'SSH-2.0-OpenSSH_9.7'
]

excluded_versions = [
    'SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.10',
    'SSH-2.0-OpenSSH_9.3p1 Ubuntu-3ubuntu3.6',
    'SSH-2.0-OpenSSH_9.6p1 Ubuntu-3ubuntu13.3',
    'SSH-2.0-OpenSSH_9.3p1 Ubuntu-1ubuntu3.6',
    'SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u3',
    'SSH-2.0-OpenSSH_8.4p1 Debian-5+deb11u3'
]

if any(version in banner for version in vulnerable_versions) and banner not in excluded_versions:
    result_queue.put((ip, port, 'vulnerable', f"(running {banner})"))
else:
    result_queue.put((ip, port, 'not_vulnerable', f"(running {banner})"))

def process_ip_list(ip_list_file):
ips = []
try:
with open(ip_list_file, 'r') as file:
ips.extend(file.readlines())
except IOError:
print(f"❌ [-] Could not read file: {ip_list_file}")
return [ip.strip() for ip in ips]

def main():
parser = argparse.ArgumentParser(description="Check if servers are running a vulnerable version of OpenSSH.")
parser.add_argument("targets", nargs='*', help="IP addresses, domain names, file paths containing IP addresses, or CIDR network ranges.")
parser.add_argument("--port", type=int, default=22, help="Port number to check (default: 22).")
parser.add_argument("-t", "--timeout", type=float, default=1.0, help="Connection timeout in seconds (default: 1 second).")
parser.add_argument("-l", "--list", help="File containing a list of IP addresses to check.")

args = parser.parse_args()
targets = args.targets
port = args.port
timeout = args.timeout

ips = []

if args.list:
    ips.extend(process_ip_list(args.list))

for target in targets:
    try:
        with open(target, 'r') as file:
            ips.extend(file.readlines())
    except IOError:
        if '/' in target:
            try:
                network = ipaddress.ip_network(target, strict=False)
                ips.extend([str(ip) for ip in network.hosts()])
            except ValueError:
                print(f"❌ [-] Invalid CIDR notation: {target}")
        else:
            ips.append(target)

result_queue = Queue()

# Limit the number of concurrent threads
max_workers = 100
with ThreadPoolExecutor(max_workers=max_workers) as executor:
    futures = []
    for ip in ips:
        ip = ip.strip()
        futures.append(executor.submit(check_vulnerability, ip, port, timeout, result_queue))

    for future in as_completed(futures):
        future.result()

total_scanned = len(ips)
closed_ports = 0
not_vulnerable = []
vulnerable = []

while not result_queue.empty():
    ip, port, status, message = result_queue.get()
    if status == 'closed':
        closed_ports += 1
    elif status == 'vulnerable':
        vulnerable.append((ip, message))
    elif status == 'not_vulnerable':
        not_vulnerable.append((ip, message))
    else:
        print(f"⚠️ [!] Server at {ip}:{port} is {message}")

print(f"\n🛡️ Servers not vulnerable: {len(not_vulnerable)}\n")
for ip, msg in not_vulnerable:
    print(f"   [+] Server at {ip} {msg}")
print(f"\n🚨 Servers likely vulnerable: {len(vulnerable)}\n")
for ip, msg in vulnerable:
    print(f"   [+] Server at {ip} {msg}")
print(f"\n🔒 Servers with port {port} closed: {closed_ports}")
print(f"\n📊 Total scanned targets: {total_scanned}\n")

if name == "main":
main()
`

[xaitax]

Please test again - should be solved now. If persists, please reopen.