php 跨站漏洞修复,WordPress跨站（XSS）漏洞修复

这几天用百度的安全联盟检测，发现网站有XSS漏洞，下面放出解决方法(存档用)

打开wp-includes\query.php，在文件处开始添加去除xss的函数

//清除跨站漏洞

function xss_clean($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;

}

//清除跨站漏洞

查找

$q['s'] = stripslashes($q['s']);

在后面添加

$q['s'] = xss_clean($q['s']);

即可解决