Changeset 44048 for trunk/src/wp-includes/ms-deprecated.php

Timestamp:

12/13/2018 01:25:03 AM (8 years ago)

Author:

peterwilsoncc

Message:

Multisite: Validate activation links.

File:

• trunk/src/wp-includes/ms-deprecated.php (modified) (2 diffs)

trunk/src/wp-includes/ms-deprecated.php

@@ -272 +272 @@
 
         $ref = '';
-        if ( isset( $_GET['ref'] ) )
-                $ref = $_GET['ref'];
-        if ( isset( $_POST['ref'] ) )
-                $ref = $_POST['ref'];
+        if ( isset( $_GET['ref'] ) && isset( $_POST['ref'] ) && $_GET['ref'] !== $_POST['ref'] ) {
+                wp_die( __( 'A variable mismatch has been detected.' ), __( 'Sorry, you are not allowed to view this item.' ), 400 );
+        } elseif ( isset( $_POST['ref'] ) ) {
+                $ref = $_POST[ 'ref' ];
+        } elseif ( isset( $_GET['ref'] ) ) {
+                $ref = $_GET[ 'ref' ];
+        }
 
         if ( $ref ) {
@@ -288 +291 @@
 
         $url = wpmu_admin_redirect_add_updated_param( $url );
-        if ( isset( $_GET['redirect'] ) ) {
+        if ( isset( $_GET['redirect'] ) && isset( $_POST['redirect'] ) && $_GET['redirect'] !== $_POST['redirect'] ) {
+                wp_die( __( 'A variable mismatch has been detected.' ), __( 'Sorry, you are not allowed to view this item.' ), 400 );
+        } elseif ( isset( $_GET['redirect'] ) ) {
                 if ( substr( $_GET['redirect'], 0, 2 ) == 's_' )
                         $url .= '&action=blogs&s='. esc_html( substr( $_GET['redirect'], 2 ) );