drupal core updated to 7.28

includes/install.core.inc

@@ -692,6 +692,21 @@ function install_full_redirect_url($install_state) {
  */
 function install_display_output($output, $install_state) {
   drupal_page_header();
+
+  // Prevent install.php from being indexed when installed in a sub folder.
+  // robots.txt rules are not read if the site is within domain.com/subfolder
+  // resulting in /subfolder/install.php being found through search engines.
+  // When settings.php is writeable this can be used via an external database
+  // leading a malicious user to gain php access to the server.
+  $noindex_meta_tag = array(
+    '#tag' => 'meta',
+    '#attributes' => array(
+      'name' => 'robots',
+      'content' => 'noindex, nofollow',
+    ),
+  );
+  drupal_add_html_head($noindex_meta_tag, 'install_meta_robots');
+
   // Only show the task list if there is an active task; otherwise, the page
   // request has ended before tasks have even been started, so there is nothing
   // meaningful to show.
@@ -766,6 +781,15 @@ function install_system_module(&$install_state) {
   // Install system.module.
   drupal_install_system();
 
+  // Call file_ensure_htaccess() to ensure that all of Drupal's standard
+  // directories (e.g., the public and private files directories) have
+  // appropriate .htaccess files. These directories will have already been
+  // created by this point in the installer, since Drupal creates them during
+  // the install_verify_requirements() task. Note that we cannot call
+  // file_ensure_htaccess() any earlier than this, since it relies on
+  // system.module in order to work.
+  file_ensure_htaccess();
+
   // Enable the user module so that sessions can be recorded during the
   // upcoming bootstrap step.
   module_enable(array('user'), FALSE);
@@ -981,7 +1005,7 @@ function install_settings_form_submit($form, &$form_state) {
     'required' => TRUE,
   );
   $settings['drupal_hash_salt'] = array(
-    'value'    => drupal_hash_base64(drupal_random_bytes(55)),
+    'value'    => drupal_random_key(),
     'required' => TRUE,
   );
   drupal_rewrite_settings($settings);