From 0a5b1f7412a2e7571eec690cafe0ae9d26808fd6 Mon Sep 17 00:00:00 2001
From: Brad Jorsch <bjorsch@wikimedia.org>
Date: Thu, 7 Jul 2016 17:24:50 -0400
Subject: [PATCH] SECURITY: Move 'UserGetRights' call before application of
 Session::getAllowedUserRights()

This prevents hook functions from accidentally adding rights that should
be denied based on the session grants.

If some extension really needs to be able to override session grants,
add a new hook where the old call was, with documentation explicitly
warning about the security implications.

Bug: T139670
Change-Id: I6392cf4d7cc9d3ea96554b25bb5f8abb66e9031b
---
 includes/user/User.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/includes/user/User.php b/includes/user/User.php
index 4a92f65..19e273b 100644
--- a/includes/user/User.php
+++ b/includes/user/User.php
@@ -3253,6 +3253,7 @@ class User implements IDBAccessObject {
 	public function getRights() {
 		if ( is_null( $this->mRights ) ) {
 			$this->mRights = self::getGroupPermissions( $this->getEffectiveGroups() );
+			Hooks::run( 'UserGetRights', [ $this, &$this->mRights ] );
 
 			// Deny any rights denied by the user's session, unless this
 			// endpoint has no sessions.
@@ -3263,7 +3264,6 @@ class User implements IDBAccessObject {
 				}
 			}
 
-			Hooks::run( 'UserGetRights', [ $this, &$this->mRights ] );
 			// Force reindexation of rights when a hook has unset one of them
 			$this->mRights = array_values( array_unique( $this->mRights ) );
 		}
-- 
2.8.1

