From 43abcd93867996e32890fa101ae09255ccc24847 Mon Sep 17 00:00:00 2001
From: Bharat Mediratta <bharat@menalto.com>
Date: Mon, 1 Jun 2009 22:40:22 -0700
Subject: Security pass over all controller code.  Mostly adding CSRF checking
 and verifying user permissions, but there are several above-the-bar changes:

1) Server add is now only available to admins.  This is a hard
   requirement because we have to limit server access (eg:
   server_add::children) to a user subset and the current permission
   model doesn't include that.  Easiest fix is to restrict to admins.
   Got rid of the server_add permission.

2) We now know check permissions at every level, which means in
   controllers AND in helpers.  This "belt and suspenders" approach will
   give us defense in depth in case we overlook it in one area.

3) We now do CSRF checking in every controller method that changes the
   code, in addition to the Forge auto-check.  Again, defense in depth
   and it makes scanning the code for security much simpler.

4) Moved Simple_Uploader_Controller::convert_filename_to_title to
   item:convert_filename_to_title

5) Fixed a bug in sending notification emails.

6) Fixed the Organize code to verify that you only have access to your
   own tasks.  In general, added permission checks to organize which had
   pretty much no validation code.

I did my best to verify every feature that I touched.
---
 modules/user/controllers/admin_users.php | 6 ++++++
 modules/user/controllers/login.php       | 4 ++++
 modules/user/controllers/logout.php      | 2 ++
 modules/user/controllers/password.php    | 4 ++++
 4 files changed, 16 insertions(+)

(limited to 'modules/user/controllers')

diff --git a/modules/user/controllers/admin_users.php b/modules/user/controllers/admin_users.php
index ac17c577..fe8061aa 100644
--- a/modules/user/controllers/admin_users.php
+++ b/modules/user/controllers/admin_users.php
@@ -28,6 +28,7 @@ class Admin_Users_Controller extends Controller {
 
   public function add_user() {
     access::verify_csrf();
+
     $form = user::get_add_form_admin();
     $valid = $form->validate();
     $name = $form->add_user->inputs["name"]->value;
@@ -63,6 +64,7 @@ class Admin_Users_Controller extends Controller {
 
   public function delete_user($id) {
     access::verify_csrf();
+
     if ($id == user::active()->id || $id == user::guest()->id) {
       access::forbidden();
     }
@@ -97,6 +99,7 @@ class Admin_Users_Controller extends Controller {
 
   public function edit_user($id) {
     access::verify_csrf();
+
     $user = ORM::factory("user", $id);
     if (!$user->loaded) {
       kohana::show_404();
@@ -182,6 +185,7 @@ class Admin_Users_Controller extends Controller {
 
   public function add_group() {
     access::verify_csrf();
+
     $form = group::get_add_form_admin();
     $valid = $form->validate();
     if ($valid) {
@@ -210,6 +214,7 @@ class Admin_Users_Controller extends Controller {
 
   public function delete_group($id) {
     access::verify_csrf();
+
     $group = ORM::factory("group", $id);
     if (!$group->loaded) {
       kohana::show_404();
@@ -240,6 +245,7 @@ class Admin_Users_Controller extends Controller {
 
   public function edit_group($id) {
     access::verify_csrf();
+
     $group = ORM::factory("group", $id);
     if (!$group->loaded) {
       kohana::show_404();
diff --git a/modules/user/controllers/login.php b/modules/user/controllers/login.php
index 6ee2e69d..54a7905e 100644
--- a/modules/user/controllers/login.php
+++ b/modules/user/controllers/login.php
@@ -26,6 +26,8 @@ class Login_Controller extends Controller {
   }
 
   public function auth_ajax() {
+    access::verify_csrf();
+
     list ($valid, $form) = $this->_auth("login/auth_ajax");
     if ($valid) {
       print json_encode(
@@ -42,6 +44,8 @@ class Login_Controller extends Controller {
   }
 
   public function auth_html() {
+    access::verify_csrf();
+
     list ($valid, $form) = $this->_auth("login/auth_html");
     if ($valid) {
       url::redirect("albums/1");
diff --git a/modules/user/controllers/logout.php b/modules/user/controllers/logout.php
index b43680d5..6ceb7192 100644
--- a/modules/user/controllers/logout.php
+++ b/modules/user/controllers/logout.php
@@ -19,6 +19,8 @@
  */
 class Logout_Controller extends Controller {
   public function index() {
+    access::verify_csrf();
+
     $user = user::active();
     user::logout();
     log::info("user", t("User %name logged out", array("name" => $user->name)),
diff --git a/modules/user/controllers/password.php b/modules/user/controllers/password.php
index c3e66634..3b0eac66 100644
--- a/modules/user/controllers/password.php
+++ b/modules/user/controllers/password.php
@@ -19,6 +19,8 @@
  */
 class Password_Controller extends Controller {
   public function reset() {
+    access::verify_csrf();
+
     if (request::method() == "post") {
       $this->_send_reset();
     } else {
@@ -27,6 +29,8 @@ class Password_Controller extends Controller {
   }
 
   public function do_reset() {
+    access::verify_csrf();
+
     if (request::method() == "post") {
       $this->_change_password();
     } else {
-- 
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