Changeset 46498 for branches/4.4/src/wp-includes/functions.php

Timestamp:

10/14/2019 07:08:52 PM (7 years ago)

Author:

whyisjake

Message:

Backporting several bug fixes.

• Query: Remove the static query property.
• HTTP API: Protect against hex interpretation.
• Filesystem API: Prevent directory travelersals when creating new folders.
• Administration: Ensure that admin referer nonce is valid.
• REST API: Send a Vary: Origin header on GET requests.
• Customizer: Properly sanitize background images.

Backports [46474], [46475], [46476], [46477], [46478], [46483], [46485] to the 4.4 branch.

Location:

branches/4.4

Files:

• . (modified) (1 prop)
• src/wp-includes/functions.php (modified) (1 diff)

branches/4.4/src/wp-includes/functions.php

@@ -1580 +1580 @@
         if ( file_exists( $target ) )
                 return @is_dir( $target );
+
+        // Do not allow path traversals.
+        if ( false !== strpos( $target, '../' ) || false !== strpos( $target, '..' . DIRECTORY_SEPARATOR ) ) {
+                return false;
+        }
 
         // We need to find the permissions of the parent folder that exists and inherit that.