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Discuz! System Error

處理方法：

\source\class\discuz的discuz_application.php 使用編輯器Ctlr+F 查找函數 _xss_check()

再將以下這段

• private function _xss_check() {
•  
• static $check = array('"', '>', '<', '\'', '(', ')', 'CONTENT-TRANSFER-ENCODING');
•  
• if(isset($_GET['formhash']) && $_GET['formhash'] !== formhash()) {
• system_error('request_tainting');
• }
•  
• if($_SERVER['REQUEST_METHOD'] == 'GET' ) {
• $temp = $_SERVER['REQUEST_URI'];
• } elseif(empty ($_GET['formhash'])) {
• $temp = $_SERVER['REQUEST_URI'].file_get_contents('php://input');
• } else {
• $temp = '';
• }
•  
• if(!empty($temp)) {
• $temp = strtoupper(urldecode(urldecode($temp)));
• foreach ($check as $str) {
• if(strpos($temp, $str) !== false) {
• system_error('request_tainting');
• }
• }
• }
•  
• return true;
• }

替換為：

• private function _xss_check() {
• $temp = strtoupper(urldecode(urldecode($_SERVER['REQUEST_URI'])));
• if(strpos($temp, '<') !== false || strpos($temp, '"') !== false || strpos($temp, 'CONTENT-TRANSFER-ENCODING') !== false) {
• system_error('request_tainting');
• }
• return true;
• }

儲存再上傳到同一目錄覆蓋即可解決