Commit c1ccd41248939464f659534dc18201039f4fe1d6
1 parent
0c85bdab
Type: Functionality change
Description: Includes XSS attack prevention. Behaviour before fix: XSS attack could be performed on login.php. Behaviour after fix: XSS attacks seem unsuccessful after patch. Credit: Thanks to Jonathan E. Hawkins for pointing out this bug. git-svn-id: https://kt-dms.svn.sourceforge.net/svnroot/kt-dms/trunk@2823 c91229c3-7414-0410-bfa2-8a42b809f60b
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lib/sanitize.inc
0 → 100644
| 1 | +<?php | ||
| 2 | + | ||
| 3 | +/** | ||
| 4 | + * $Id$ | ||
| 5 | + * | ||
| 6 | + * This page is meant to provide functions to prevent XSS cracks. | ||
| 7 | + * | ||
| 8 | + * Copyright (c) 2003 Jam Warehouse http://www.jamwarehouse.com | ||
| 9 | + * | ||
| 10 | + * This program is free software; you can redistribute it and/or modify | ||
| 11 | + * it under the terms of the GNU General Public License as published by | ||
| 12 | + * the Free Software Foundation; either version 2 of the License, or | ||
| 13 | + * (at your option) any later version. | ||
| 14 | + * | ||
| 15 | + * This program is distributed in the hope that it will be useful, | ||
| 16 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 17 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 18 | + * GNU General Public License for more details. | ||
| 19 | + * | ||
| 20 | + * You should have received a copy of the GNU General Public License | ||
| 21 | + * along with this program; if not, write to the Free Software | ||
| 22 | + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 23 | + * | ||
| 24 | + * @version $Revision$ | ||
| 25 | + * @author Andrew Glen-Young <andrew@jamwarehouse.com>, Jam Warehouse (Pty) Ltd, South Africa | ||
| 26 | + */ | ||
| 27 | + | ||
| 28 | +/** | ||
| 29 | + * Accepts a web encoded string and outputs a "clean" string. | ||
| 30 | + */ | ||
| 31 | + | ||
| 32 | +function sanitize($string) { | ||
| 33 | + // Remove '(' and ')' | ||
| 34 | + $xss_array = array("(" => "#&40;", ")" => "#&41;"); | ||
| 35 | + // Remove all HTML tags. | ||
| 36 | + $string = strtr(strip_tags(urldecode($string)), $xss_array); | ||
| 37 | + return $string; | ||
| 38 | +} | ||
| 39 | + | ||
| 40 | +?> |