From a2cf7c41b97a587d90188b83e4d15da1567a54b4 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Wed, 09 Apr 2014 02:48:28 -0400
Subject: [PATCH] Fix accidental key replacements

---
 program/steps/utils/save_pref.inc |   46 +++++++++++++++++++++++++++++++++++-----------
 1 files changed, 35 insertions(+), 11 deletions(-)

diff --git a/program/steps/utils/save_pref.inc b/program/steps/utils/save_pref.inc
index d7cb8bf..183c398 100644
--- a/program/steps/utils/save_pref.inc
+++ b/program/steps/utils/save_pref.inc
@@ -1,12 +1,15 @@
 <?php
-/*
 
+/*
  +-----------------------------------------------------------------------+
  | program/steps/utils/save_pref.inc                                     |
  |                                                                       |
  | This file is part of the Roundcube Webmail client                     |
- | Copyright (C) 2005-2010, Roundcube Dev. - Switzerland                 |
- | Licensed under the GNU GPL                                            |
+ | Copyright (C) 2005-2013, The Roundcube Dev Team                       |
+ |                                                                       |
+ | Licensed under the GNU General Public License version 3 or            |
+ | any later version with exceptions for skins & plugins.                |
+ | See the README file for a full license statement.                     |
  |                                                                       |
  | PURPOSE:                                                              |
  |   Save preferences setting in database                                |
@@ -14,19 +17,42 @@
  +-----------------------------------------------------------------------+
  | Author: Aleksander Machniak <alec@alec.pl>                            |
  +-----------------------------------------------------------------------+
-
- $Id$
-
 */
 
-$name = get_input_value('_name', RCUBE_INPUT_POST);
-$value = get_input_value('_value', RCUBE_INPUT_POST);
+$name     = rcube_utils::get_input_value('_name', rcube_utils::INPUT_POST);
+$value    = rcube_utils::get_input_value('_value', rcube_utils::INPUT_POST);
+$sessname = rcube_utils::get_input_value('_session', rcube_utils::INPUT_POST);
+
+// Whitelisted preferences and session variables, others
+// can be added by plugins
+$whitelist = array(
+    'preview_pane',
+    'list_cols',
+    'collapsed_folders',
+    'collapsed_abooks',
+);
+$whitelist_sess = array(
+    'list_attrib/columns',
+);
+
+$whitelist      = array_merge($whitelist, $RCMAIL->plugins->allowed_prefs);
+$whitelist_sess = array_merge($whitelist_sess, $RCMAIL->plugins->allowed_session_prefs);
+
+if (!in_array($name, $whitelist) || ($sessname && !in_array($sessname, $whitelist_sess))) {
+    rcube::raise_error(array('code' => 500, 'type' => 'php',
+        'file' => __FILE__, 'line' => __LINE__,
+        'message' => sprintf("Hack attempt detected (user: %s)", $RCMAIL->get_user_name())),
+        true, false);
+
+    $OUTPUT->reset();
+    $OUTPUT->send();
+}
 
 // save preference value
 $RCMAIL->user->save_prefs(array($name => $value));
 
 // update also session if requested
-if ($sessname = get_input_value('_session', RCUBE_INPUT_POST)) {
+if ($sessname) {
     // Support multidimensional arrays...
     $vars = explode('/', $sessname);
 
@@ -41,5 +67,3 @@
 
 $OUTPUT->reset();
 $OUTPUT->send();
-
-

--
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