XSS攻击简单示例

xss

建立漏洞页面

在www目录下新建xss.php,代码如下

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
        <title>xss漏洞简单搭建</title>
    </head>
    <body>
        <center>
            <h6>把我们输入的字符串输出到input里的value属性里</h6>
            <form action="" method="get">
                <h6>请输入你想显现的字符串</h6>
                <input type="text" name="xss_input_value" value="输入"><br />
                <input type='submit'>
            </form>
            <hr>

            <?php
            //php防注入和XSS攻击通用过滤
$_GET     && SafeFilter($_GET);
$_POST    && SafeFilter($_POST);
$_COOKIE  && SafeFilter($_COOKIE);

function SafeFilter (&$arr) 
{
   $ra=Array('/([\x00-\x08,\x0b-\x0c,\x0e-\x19])/','/script/','/javascript/','/vbscript/','/expression/','/applet/'
   ,'/meta/','/xml/','/blink/','/link/','/style/','/embed/','/object/','/frame/','/layer/','/title/','/bgsound/'
   ,'/base/','/onload/','/onunload/','/onchange/','/onsubmit/','/onreset/','/onselect/','/onblur/','/onfocus/',
   '/onabort/','/onkeydown/','/onkeypress/','/onkeyup/','/onclick/','/ondblclick/','/onmousedown/','/onmousemove/'
   ,'/onmouseout/','/onmouseover/','/onmouseup/','/onunload/');

   if (is_array($arr))
   {
     foreach ($arr as $key => $value) 
     {
        if (!is_array($value))
        {
          if (!get_magic_quotes_gpc())  //不对magic_quotes_gpc转义过的字符使用addslashes(),避免双重转义。
          {
             $value  = addslashes($value); //给单引号（'）、双引号（"）、反斜线（\）与 NUL（NULL 字符）  加上反斜线转义
          }
          $value       = preg_replace($ra,'',$value);     //删除非打印字符，粗暴式过滤xss可疑字符串
          $arr[$key]     = htmlentities(strip_tags($value)); //去除 HTML 和 PHP 标记并转换为 HTML 实体
        }
        else
        {
          SafeFilter($arr[$key]);
        }
     }
   }
}

            if (isset($_GET['xss_input_value']))
            {
                $s=$_GET['xss_input_value'];
                echo'<input type="text" value="'.$_GET['xss_input_value'].'">';


            }
            else{
                echo '<input type="text" value="输出">';
            }

?>

        </center>

        </script>


    </body>
</html>

在浏览器输入http://localhost/xss.php/

进入页面