一、客户检测报告:
事件URL:
http://127.0.0.1/mgr/login.php?gotopage=%22%3E%3Cinput%20type=%22text%22%20onInput=alert(1)%3E%3Cx=%22
事件类型:
漏洞-KingCms门户系统存储型XSS
事件URL:
http://127.0.0.1/mgr/login.php?gotopage=%22%3E%3Cinput%20type=%22text%22%20onInput=alert(1)%3E%3Cx=%22
二、XSS注入分析
检测方使用的注册方式(转码前):
http://127.0.0.1/mgr/login.php?gotopage="> 原理是 利用目标表单页面上面的一个input 隐藏域: 实现注入。 三、处理方式 : 方法1:过滤js关键字 方法2:转义特殊符号 及html 关键字 四、如何使用: 在接收页面,用这两个函数分别过滤所有的参数: 如: function xss_clea1($var)
{
$ra=array('/([\x00-\x08,\x0b-\x0c,\x0e-\x19])/','/script/i','/javascript/i','/vbscript/i','/onload/i','/onunload/i','/onchange/i','/onsubmit/i','/onreset/i','/onselect/i','/onblur/i','/onfocus/i','/onabort/i','/onkeydown/i','/onkeypress/i','/onkeyup/i','/onclick/i','/ondblclick/i','/onmousedown/i','/onmousemove/i','/onmouseout/i','/onmouseover/i','/onmouseup/i','/onunload/i');
$var = preg_replace($ra,'',$var);
return htmlspecialchars($var,ENT_QUOTES);
}
function xss_clean2($data){
// Fix &entity\n;
$data=str_replace(array('&','<','>'),array('&','<','>'),$data);
$data=preg_replace('/(*\w+)[\x00-\x20]+;/u','$1;',$data);
$data=preg_replace('/(*[0-9A-F]+);*/iu','$1;',$data);
$data=html_entity_decode($data,ENT_COMPAT,'UTF-8');
// Remove any attribute starting with "on" or xmlns
$data=preg_replace('#(<[^>]+?[\x00-\x20"\'])(?:on|xmlns)[^>]*+>#iu','$1>',$data);
// Remove javascript: and vbscript: protocols
$data=preg_replace('#([a-z]*)[\x00-\x20]*=[\x00-\x20]*([`\'"]*)[\x00-\x20]*j[\x00-\x20]*a[\x00-\x20]*v[\x00-\x20]*a[\x00-\x20]*s[\x00-\x20]*c[\x00-\x20]*r[\x00-\x20]*i[\x00-\x20]*p[\x00-\x20]*t[\x00-\x20]*:#iu','$1=$2nojavascript...',$data);
$data=preg_replace('#([a-z]*)[\x00-\x20]*=([\'"]*)[\x00-\x20]*v[\x00-\x20]*b[\x00-\x20]*s[\x00-\x20]*c[\x00-\x20]*r[\x00-\x20]*i[\x00-\x20]*p[\x00-\x20]*t[\x00-\x20]*:#iu','$1=$2novbscript...',$data);
$data=preg_replace('#([a-z]*)[\x00-\x20]*=([\'"]*)[\x00-\x20]*-moz-binding[\x00-\x20]*:#u','$1=$2nomozbinding...',$data);
// Only works in IE:
$data=preg_replace('#(<[^>]+?)style[\x00-\x20]*=[\x00-\x20]*[`\'"]*.*?expression[\x00-\x20]*\([^>]*+>#i','$1>',$data);
$data=preg_replace('#(<[^>]+?)style[\x00-\x20]*=[\x00-\x20]*[`\'"]*.*?behaviour[\x00-\x20]*\([^>]*+>#i','$1>',$data);
$data=preg_replace('#(<[^>]+?)style[\x00-\x20]*=[\x00-\x20]*[`\'"]*.*?s[\x00-\x20]*c[\x00-\x20]*r[\x00-\x20]*i[\x00-\x20]*p[\x00-\x20]*t[\x00-\x20]*:*[^>]*+>#iu','$1>',$data);
// Remove namespaced elements (we do not need them)
$data=preg_replace('#*\w+:\w[^>]*+>#i','',$data);
do{// Remove really unwanted tags
$old_data=$data;
$data=preg_replace('#*(?:applet|b(?:ase|gsound|link)|embed|frame(?:set)?|i(?:frame|layer)|l(?:ayer|ink)|meta|object|s(?:cript|tyle)|title|xml)[^>]*+>#i','',$data);
}while($old_data!==$data);
// we are done...
return $data;
}
$gotopage = xss_clean1($gotopage);
$gotopage = xss_clean2($gotopage );