Better CSS url() validation

thomascube

2011-12-09 854397b216463d77561b8adadf880c3fbbcb8885

 program/steps/mail/func.inc

@@ -834,8 +834,8 @@
      $stripped = preg_replace('/[^a-zA-Z\(:;]/', '', rcmail_xss_entity_decode($content));

      // now check for evil strings like expression, behavior or url()
      if (!preg_match('/expression|behavior/i', $stripped)) {
        if (!$washtml->get_config('allow_remote') && preg_match('/url\(|import[^a]/i', $stripped))
      if (!preg_match('/expression|behavior|javascript:|import[^a]/i', $stripped)) {
        if (!$washtml->get_config('allow_remote') && stripos($stripped, 'url('))
          $washtml->extlinks = true;
        else
          $out = html::tag('style', array('type' => 'text/css'), $content);