From 037af6890fe6fdb84a08d3c86083e847c90ec0ad Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Tue, 22 Oct 2013 08:17:26 -0400
Subject: [PATCH] Fix vulnerability in handling _session argument of utils/save-prefs (#1489382)

---
 plugins/managesieve/managesieve.php |  216 +++++++++++++++++++++++++++++++++++++++++++++--------
 1 files changed, 181 insertions(+), 35 deletions(-)

diff --git a/plugins/managesieve/managesieve.php b/plugins/managesieve/managesieve.php
index 8ef5f3f..4e7fdb6 100644
--- a/plugins/managesieve/managesieve.php
+++ b/plugins/managesieve/managesieve.php
@@ -7,13 +7,13 @@
  * It's clickable interface which operates on text scripts and communicates
  * with server using managesieve protocol. Adds Filters tab in Settings.
  *
- * @version 5.0
+ * @version @package_version@
  * @author Aleksander Machniak <alec@alec.pl>
  *
  * Configuration (see config.inc.php.dist)
  *
- * Copyright (C) 2008-2011, The Roundcube Dev Team
- * Copyright (C) 2011, Kolab Systems AG
+ * Copyright (C) 2008-2012, The Roundcube Dev Team
+ * Copyright (C) 2011-2012, Kolab Systems AG
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2
@@ -62,8 +62,9 @@
         "x-beenthere",
     );
 
-    const VERSION = '5.2';
+    const VERSION  = '6.2';
     const PROGNAME = 'Roundcube (Managesieve)';
+    const PORT     = 4190;
 
 
     function init()
@@ -109,16 +110,16 @@
     function mail_task_handler()
     {
         // use jQuery for popup window
-        $this->require_plugin('jqueryui'); 
+        $this->require_plugin('jqueryui');
 
         // include js script and localization
         $this->init_ui();
 
         // include styles
-        $skin = $this->rc->config->get('skin');
-        if (!file_exists($this->home."/skins/$skin/managesieve_mail.css"))
-            $skin = 'default';
-        $this->include_stylesheet("skins/$skin/managesieve_mail.css");
+        $skin_path = $this->local_skin_path();
+        if (is_file($this->home . "/$skin_path/managesieve_mail.css")) {
+            $this->include_stylesheet("$skin_path/managesieve_mail.css");
+        }
 
         // add 'Create filter' item to message menu
         $this->api->add_content(html::tag('li', null, 
@@ -199,18 +200,33 @@
         $include_path .= ini_get('include_path');
         set_include_path($include_path);
 
-        $host = rcube_parse_host($this->rc->config->get('managesieve_host', 'localhost'));
-        $port = $this->rc->config->get('managesieve_port', 2000);
+        // Get connection parameters
+        $host = $this->rc->config->get('managesieve_host', 'localhost');
+        $port = $this->rc->config->get('managesieve_port');
+        $tls  = $this->rc->config->get('managesieve_usetls', false);
 
+        $host = rcube_parse_host($host);
         $host = rcube_idn_to_ascii($host);
+
+        // remove tls:// prefix, set TLS flag
+        if (($host = preg_replace('|^tls://|i', '', $host, 1, $cnt)) && $cnt) {
+            $tls = true;
+        }
+
+        if (empty($port)) {
+            $port = getservbyname('sieve', 'tcp');
+            if (empty($port)) {
+                $port = self::PORT;
+            }
+        }
 
         $plugin = $this->rc->plugins->exec_hook('managesieve_connect', array(
             'user'      => $_SESSION['username'],
             'password'  => $this->rc->decrypt($_SESSION['password']),
             'host'      => $host,
             'port'      => $port,
+            'usetls'    => $tls,
             'auth_type' => $this->rc->config->get('managesieve_auth_type'),
-            'usetls'    => $this->rc->config->get('managesieve_usetls', false),
             'disabled'  => $this->rc->config->get('managesieve_disabled_extensions'),
             'debug'     => $this->rc->config->get('managesieve_debug', false),
             'auth_cid'  => $this->rc->config->get('managesieve_auth_cid'),
@@ -523,9 +539,37 @@
         // Init plugin and handle managesieve connection
         $error = $this->managesieve_start();
 
-        // filters set add action
-        if (!empty($_POST['_newset'])) {
+        // get request size limits (#1488648)
+        $max_post = max(array(
+            ini_get('max_input_vars'),
+            ini_get('suhosin.request.max_vars'),
+            ini_get('suhosin.post.max_vars'),
+        ));
+        $max_depth = max(array(
+            ini_get('suhosin.request.max_array_depth'),
+            ini_get('suhosin.post.max_array_depth'),
+        ));
 
+        // check request size limit
+        if ($max_post && count($_POST, COUNT_RECURSIVE) >= $max_post) {
+            rcube::raise_error(array(
+                'code' => 500, 'type' => 'php',
+                'file' => __FILE__, 'line' => __LINE__,
+                'message' => "Request size limit exceeded (one of max_input_vars/suhosin.request.max_vars/suhosin.post.max_vars)"
+                ), true, false);
+            $this->rc->output->show_message('managesieve.filtersaveerror', 'error');
+        }
+        // check request depth limits
+        else if ($max_depth && count($_POST['_header']) > $max_depth) {
+            rcube::raise_error(array(
+                'code' => 500, 'type' => 'php',
+                'file' => __FILE__, 'line' => __LINE__,
+                'message' => "Request size limit exceeded (one of suhosin.request.max_array_depth/suhosin.post.max_array_depth)"
+                ), true, false);
+            $this->rc->output->show_message('managesieve.filtersaveerror', 'error');
+        }
+        // filters set add action
+        else if (!empty($_POST['_newset'])) {
             $name       = get_input_value('_name', RCUBE_INPUT_POST, true);
             $copy       = get_input_value('_copy', RCUBE_INPUT_POST, true);
             $from       = get_input_value('_from', RCUBE_INPUT_POST);
@@ -616,6 +660,7 @@
             $act_types      = get_input_value('_action_type', RCUBE_INPUT_POST, true);
             $mailboxes      = get_input_value('_action_mailbox', RCUBE_INPUT_POST, true);
             $act_targets    = get_input_value('_action_target', RCUBE_INPUT_POST, true);
+            $domain_targets = get_input_value('_action_target_domain', RCUBE_INPUT_POST);
             $area_targets   = get_input_value('_action_target_area', RCUBE_INPUT_POST, true);
             $reasons        = get_input_value('_action_reason', RCUBE_INPUT_POST, true);
             $addresses      = get_input_value('_action_addresses', RCUBE_INPUT_POST, true);
@@ -625,6 +670,11 @@
             $varnames       = get_input_value('_action_varname', RCUBE_INPUT_POST);
             $varvalues      = get_input_value('_action_varvalue', RCUBE_INPUT_POST);
             $varmods        = get_input_value('_action_varmods', RCUBE_INPUT_POST);
+            $notifyaddrs    = get_input_value('_action_notifyaddress', RCUBE_INPUT_POST);
+            $notifybodies   = get_input_value('_action_notifybody', RCUBE_INPUT_POST);
+            $notifymessages = get_input_value('_action_notifymessage', RCUBE_INPUT_POST);
+            $notifyfrom     = get_input_value('_action_notifyfrom', RCUBE_INPUT_POST);
+            $notifyimp      = get_input_value('_action_notifyimportance', RCUBE_INPUT_POST);
 
             // we need a "hack" for radiobuttons
             foreach ($sizeitems as $item)
@@ -779,14 +829,13 @@
             $i = 0;
             // actions
             foreach($act_types as $idx => $type) {
-                $type   = $this->strip_value($type);
-                $target = $this->strip_value($act_targets[$idx]);
+                $type = $this->strip_value($type);
 
                 switch ($type) {
 
                 case 'fileinto':
                 case 'fileinto_copy':
-                    $mailbox = $this->strip_value($mailboxes[$idx]);
+                    $mailbox = $this->strip_value($mailboxes[$idx], false, false);
                     $this->form['actions'][$i]['target'] = $this->mod_mailbox($mailbox, 'in');
                     if ($type == 'fileinto_copy') {
                         $type = 'fileinto';
@@ -805,12 +854,25 @@
 
                 case 'redirect':
                 case 'redirect_copy':
+                    $target = $this->strip_value($act_targets[$idx]);
+                    $domain = $this->strip_value($domain_targets[$idx]);
+
+                    // force one of the configured domains
+                    $domains = (array) $this->rc->config->get('managesieve_domains');
+                    if (!empty($domains) && !empty($target)) {
+                        if (!$domain || !in_array($domain, $domains)) {
+                            $domain = $domains[0];
+                        }
+
+                        $target .= '@' . $domain;
+                    }
+
                     $this->form['actions'][$i]['target'] = $target;
 
-                    if ($this->form['actions'][$i]['target'] == '')
+                    if ($target == '')
                         $this->errors['actions'][$i]['target'] = $this->gettext('cannotbeempty');
-                    else if (!check_email($this->form['actions'][$i]['target']))
-                        $this->errors['actions'][$i]['target'] = $this->gettext('noemailwarning');
+                    else if (!rcube_utils::check_email($target))
+                        $this->errors['actions'][$i]['target'] = $this->plugin->gettext(!empty($domains) ? 'forbiddenchars' : 'noemailwarning');
 
                     if ($type == 'redirect_copy') {
                         $type = 'redirect';
@@ -878,6 +940,23 @@
                         $this->errors['actions'][$i]['value'] = $this->gettext('cannotbeempty');
                     }
                     break;
+
+                case 'notify':
+                    if (empty($notifyaddrs[$idx])) {
+                        $this->errors['actions'][$i]['address'] = $this->gettext('cannotbeempty');
+                    }
+                    else if (!check_email($notifyaddrs[$idx])) {
+                        $this->errors['actions'][$i]['address'] = $this->gettext('noemailwarning');
+                    }
+                    if (!empty($notifyfrom[$idx]) && !check_email($notifyfrom[$idx])) {
+                        $this->errors['actions'][$i]['from'] = $this->gettext('noemailwarning');
+                    }
+                    $this->form['actions'][$i]['address'] = $notifyaddrs[$idx];
+                    $this->form['actions'][$i]['body'] = $notifybodies[$idx];
+                    $this->form['actions'][$i]['message'] = $notifymessages[$idx];
+                    $this->form['actions'][$i]['from'] = $notifyfrom[$idx];
+                    $this->form['actions'][$i]['importance'] = $notifyimp[$idx];
+                    break;
                 }
 
                 $this->form['actions'][$i]['type'] = $type;
@@ -901,7 +980,7 @@
                         $this->rc->output->command('parent.managesieve_updatelist',
                             isset($new) ? 'add' : 'update',
                             array(
-                                'name' => Q($this->form['name']),
+                                'name' => $this->form['name'],
                                 'id' => $fid,
                                 'disabled' => $this->form['disabled']
                         ));
@@ -983,7 +1062,7 @@
                 foreach ($list as $idx => $set) {
                     $scripts['S'.$idx] = $set;
                     $result[] = array(
-                        'name' => Q($set),
+                        'name' => $set,
                         'id' => 'S'.$idx,
                         'class' => !in_array($set, $this->active) ? 'disabled' : '',
                     );
@@ -1026,9 +1105,9 @@
 
         $this->rc->output->set_env('contentframe', $attrib['name']);
         $this->rc->output->set_env('blankpage', $attrib['src'] ?
-        $this->rc->output->abs_url($attrib['src']) : 'program/blank.gif');
+        $this->rc->output->abs_url($attrib['src']) : 'program/resources/blank.gif');
 
-        return html::tag('iframe', $attrib);
+        return $this->rc->output->frame($attrib);
     }
 
     function filterset_form($attrib)
@@ -1479,6 +1558,9 @@
         if (in_array('variables', $this->exts)) {
             $select_action->add(Q($this->gettext('setvariable')), 'set');
         }
+        if (in_array('enotify', $this->exts) || in_array('notify', $this->exts)) {
+            $select_action->add(Q($this->gettext('notify')), 'notify');
+        }
         $select_action->add(Q($this->gettext('rulestop')), 'stop');
 
         $select_type = $action['type'];
@@ -1491,11 +1573,34 @@
 
         // actions target inputs
         $out .= '<td class="rowtargets">';
-        // shared targets
-        $out .= '<input type="text" name="_action_target['.$id.']" id="action_target' .$id. '" '
-            .'value="' .($action['type']=='redirect' ? Q($action['target'], 'strict', false) : ''). '" size="35" '
-            .'style="display:' .($action['type']=='redirect' ? 'inline' : 'none') .'" '
-            . $this->error_class($id, 'action', 'target', 'action_target') .' />';
+
+        // force domain selection in redirect email input
+        $domains = (array) $this->rc->config->get('managesieve_domains');
+        if (!empty($domains)) {
+            sort($domains);
+
+            $domain_select = new html_select(array('name' => "_action_target_domain[$id]", 'id' => 'action_target_domain'.$id));
+            $domain_select->add(array_combine($domains, $domains));
+
+            $parts = explode('@', $action['target']);
+
+            if (!empty($parts)) {
+                $action['domain'] = array_pop($parts);
+                $action['target'] = implode('@', $parts);
+            }
+        }
+
+        // redirect target
+        $out .= '<span id="redirect_target' . $id . '" style="white-space:nowrap;'
+            . ' display:' . ($action['type'] == 'redirect' ? 'inline' : 'none') . '">'
+            . '<input type="text" name="_action_target['.$id.']" id="action_target' .$id. '"'
+            . ' value="' .($action['type'] == 'redirect' ? Q($action['target'], 'strict', false) : '') . '"'
+            . (!empty($domains) ? ' size="20"' : ' size="35"')
+            . $this->error_class($id, 'action', 'target', 'action_target') .' />'
+            . (!empty($domains) ? ' @ ' . $domain_select->show($action['domain']) : '')
+            . '</span>';
+
+        // (e)reject target
         $out .= '<textarea name="_action_target_area['.$id.']" id="action_target_area' .$id. '" '
             .'rows="3" cols="35" '. $this->error_class($id, 'action', 'targetarea', 'action_target_area')
             .'style="display:' .(in_array($action['type'], array('reject', 'ereject')) ? 'inline' : 'none') .'">'
@@ -1571,6 +1676,41 @@
         }
         $out .= '</div>';
 
+        // notify
+        // skip :options tag - not used by the mailto method
+        $out .= '<div id="action_notify' .$id.'" style="display:' .($action['type']=='notify' ? 'inline' : 'none') .'">';
+        $out .= '<span class="label">' .Q($this->gettext('notifyaddress')) . '</span><br />'
+            .'<input type="text" name="_action_notifyaddress['.$id.']" id="action_notifyaddress'.$id.'" '
+            .'value="' . Q($action['address']) . '" size="35" '
+            . $this->error_class($id, 'action', 'address', 'action_notifyaddress') .' />';
+        $out .= '<br /><span class="label">'. Q($this->gettext('notifybody')) .'</span><br />'
+            .'<textarea name="_action_notifybody['.$id.']" id="action_notifybody' .$id. '" '
+            .'rows="3" cols="35" '. $this->error_class($id, 'action', 'method', 'action_notifybody') . '>'
+            . Q($action['body'], 'strict', false) . "</textarea>\n";
+        $out .= '<br /><span class="label">' .Q($this->gettext('notifysubject')) . '</span><br />'
+            .'<input type="text" name="_action_notifymessage['.$id.']" id="action_notifymessage'.$id.'" '
+            .'value="' . Q($action['message']) . '" size="35" '
+            . $this->error_class($id, 'action', 'message', 'action_notifymessage') .' />';
+        $out .= '<br /><span class="label">' .Q($this->gettext('notifyfrom')) . '</span><br />'
+            .'<input type="text" name="_action_notifyfrom['.$id.']" id="action_notifyfrom'.$id.'" '
+            .'value="' . Q($action['from']) . '" size="35" '
+            . $this->error_class($id, 'action', 'from', 'action_notifyfrom') .' />';
+        $importance_options = array(
+            3 => 'notifyimportancelow',
+            2 => 'notifyimportancenormal',
+            1 => 'notifyimportancehigh'
+        );
+        $select_importance = new html_select(array(
+            'name' => '_action_notifyimportance[' . $id . ']',
+            'id' => '_action_notifyimportance' . $id,
+            'class' => $this->error_class($id, 'action', 'importance', 'action_notifyimportance')));
+        foreach ($importance_options as $io_v => $io_n) {
+            $select_importance->add(Q($this->gettext($io_n)), $io_v);
+        }
+        $out .= '<br /><span class="label">' . Q($this->gettext('notifyimportance')) . '</span><br />';
+        $out .= $select_importance->show($action['importance'] ? $action['importance'] : 2);
+        $out .= '</div>';
+
         // mailbox select
         if ($action['type'] == 'fileinto')
             $mailbox = $this->mod_mailbox($action['target'], 'out');
@@ -1604,16 +1744,16 @@
 
     private function genid()
     {
-        $result = preg_replace('/[^0-9]/', '', microtime(true));
-        return $result;
+        return preg_replace('/[^0-9]/', '', microtime(true));
     }
 
-    private function strip_value($str, $allow_html=false)
+    private function strip_value($str, $allow_html = false, $trim = true)
     {
-        if (!$allow_html)
+        if (!$allow_html) {
             $str = strip_tags($str);
+        }
 
-        return trim($str);
+        return $trim ? trim($str) : $str;
     }
 
     private function error_class($id, $type, $target, $elem_prefix='')
@@ -1743,6 +1883,12 @@
             // Get active script name
             if ($active = $this->sieve->get_active()) {
                 $this->active = array($active);
+            }
+
+            // Hide scripts from config
+            $exceptions = $this->rc->config->get('managesieve_filename_exceptions');
+            if (!empty($exceptions)) {
+                $this->list = array_diff($this->list, (array)$exceptions);
             }
         }
 
@@ -1929,7 +2075,7 @@
             $fname = $filter['name'] ? $filter['name'] : "#$i";
             $result[] = array(
                 'id'    => $idx,
-                'name'  => Q($fname),
+                'name'  => $fname,
                 'class' => $filter['disabled'] ? 'disabled' : '',
             );
             $i++;

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