From bd0551b22076b82a6d49e9f7a2b2e0c90a1b2326 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Fri, 05 Feb 2016 07:25:27 -0500
Subject: [PATCH] Secure also downloads of addressbook exports, managesieve script exports and Enigma keys exports
---
program/lib/Roundcube/rcube.php | 220 +++++++++++++++++--------------------------------------
1 files changed, 68 insertions(+), 152 deletions(-)
diff --git a/program/lib/Roundcube/rcube.php b/program/lib/Roundcube/rcube.php
index 02e11e2..7388472 100644
--- a/program/lib/Roundcube/rcube.php
+++ b/program/lib/Roundcube/rcube.php
@@ -124,8 +124,8 @@
/**
* This implements the 'singleton' design pattern
*
- * @param integer Options to initialize with this instance. See rcube::INIT_WITH_* constants
- * @param string Environment name to run (e.g. live, dev, test)
+ * @param integer $mode Options to initialize with this instance. See rcube::INIT_WITH_* constants
+ * @param string $env Environment name to run (e.g. live, dev, test)
*
* @return rcube The one and only instance
*/
@@ -505,7 +505,7 @@
}
ini_set('session.cookie_secure', $is_secure);
- ini_set('session.name', $sess_name ? $sess_name : 'roundcube_sessid');
+ ini_set('session.name', $sess_name ?: 'roundcube_sessid');
ini_set('session.use_cookies', 1);
ini_set('session.use_only_cookies', 1);
ini_set('session.cookie_httponly', 1);
@@ -601,7 +601,7 @@
$attrib = array('name' => $attrib);
}
- $name = $attrib['name'] ? $attrib['name'] : '';
+ $name = (string) $attrib['name'];
// attrib contain text values: use them from now
if (($setval = $attrib[strtolower($_SESSION['language'])]) || ($setval = $attrib['en_us'])) {
@@ -619,7 +619,7 @@
// replace vars in text
if (is_array($attrib['vars'])) {
foreach ($attrib['vars'] as $var_key => $var_value) {
- $text = str_replace($var_key[0]!='$' ? '$'.$var_key : $var_key, $var_value, $text);
+ $text = str_replace($var_key[0] != '$' ? '$'.$var_key : $var_key, $var_value, $text);
}
}
@@ -685,7 +685,7 @@
*/
public function load_language($lang = null, $add = array(), $merge = array())
{
- $lang = $this->language_prop(($lang ? $lang : $_SESSION['language']));
+ $lang = $this->language_prop($lang ?: $_SESSION['language']);
// load localized texts
if (empty($this->texts) || $lang != $_SESSION['language']) {
@@ -810,69 +810,37 @@
}
/**
- * Encrypt using 3DES
+ * Encrypt a string
*
* @param string $clear Clear text input
* @param string $key Encryption key to retrieve from the configuration, defaults to 'des_key'
* @param boolean $base64 Whether or not to base64_encode() the result before returning
*
- * @return string encrypted text
+ * @return string Encrypted text
*/
public function encrypt($clear, $key = 'des_key', $base64 = true)
{
- if (!$clear) {
+ if (!is_string($clear) || !strlen($clear)) {
return '';
}
- // Add a single canary byte to the end of the clear text, which
- // will help find out how much of padding will need to be removed
- // upon decryption; see http://php.net/mcrypt_generic#68082.
- $clear = pack("a*H2", $clear, "80");
- $ckey = $this->config->get_crypto_key($key);
-
- if (function_exists('openssl_encrypt')) {
- $method = 'DES-EDE3-CBC';
- $opts = defined('OPENSSL_RAW_DATA') ? OPENSSL_RAW_DATA : true;
- $iv = $this->create_iv(openssl_cipher_iv_length($method));
- $cipher = $iv . openssl_encrypt($clear, $method, $ckey, $opts, $iv);
- }
- else if (function_exists('mcrypt_module_open') &&
- ($td = mcrypt_module_open(MCRYPT_TripleDES, "", MCRYPT_MODE_CBC, ""))
- ) {
- $iv = $this->create_iv(mcrypt_enc_get_iv_size($td));
- mcrypt_generic_init($td, $ckey, $iv);
- $cipher = $iv . mcrypt_generic($td, $clear);
- mcrypt_generic_deinit($td);
- mcrypt_module_close($td);
- }
- else {
- @include_once 'des.inc';
-
- if (function_exists('des')) {
- $des_iv_size = 8;
- $iv = $this->create_iv($des_iv_size);
- $cipher = $iv . des($ckey, $clear, 1, 1, $iv);
- }
- else {
- self::raise_error(array(
- 'code' => 500, 'type' => 'php',
- 'file' => __FILE__, 'line' => __LINE__,
- 'message' => "Could not perform encryption; make sure OpenSSL or Mcrypt or lib/des.inc is available"
- ), true, true);
- }
- }
+ $ckey = $this->config->get_crypto_key($key);
+ $method = $this->config->get_crypto_method();
+ $opts = defined('OPENSSL_RAW_DATA') ? OPENSSL_RAW_DATA : true;
+ $iv = rcube_utils::random_bytes(openssl_cipher_iv_length($method), true);
+ $cipher = $iv . openssl_encrypt($clear, $method, $ckey, $opts, $iv);
return $base64 ? base64_encode($cipher) : $cipher;
}
/**
- * Decrypt 3DES-encrypted string
+ * Decrypt a string
*
* @param string $cipher Encrypted text
* @param string $key Encryption key to retrieve from the configuration, defaults to 'des_key'
* @param boolean $base64 Whether or not input is base64-encoded
*
- * @return string decrypted text
+ * @return string Decrypted text
*/
public function decrypt($cipher, $key = 'des_key', $base64 = true)
{
@@ -880,82 +848,22 @@
return '';
}
- $cipher = $base64 ? base64_decode($cipher) : $cipher;
- $ckey = $this->config->get_crypto_key($key);
+ $cipher = $base64 ? base64_decode($cipher) : $cipher;
+ $ckey = $this->config->get_crypto_key($key);
+ $method = $this->config->get_crypto_method();
+ $opts = defined('OPENSSL_RAW_DATA') ? OPENSSL_RAW_DATA : true;
+ $iv_size = openssl_cipher_iv_length($method);
+ $iv = substr($cipher, 0, $iv_size);
- if (function_exists('openssl_decrypt')) {
- $method = 'DES-EDE3-CBC';
- $opts = defined('OPENSSL_RAW_DATA') ? OPENSSL_RAW_DATA : true;
- $iv_size = openssl_cipher_iv_length($method);
- $iv = substr($cipher, 0, $iv_size);
-
- // session corruption? (#1485970)
- if (strlen($iv) < $iv_size) {
- return '';
- }
-
- $cipher = substr($cipher, $iv_size);
- $clear = openssl_decrypt($cipher, $method, $ckey, $opts, $iv);
- }
- else if (function_exists('mcrypt_module_open') &&
- ($td = mcrypt_module_open(MCRYPT_TripleDES, "", MCRYPT_MODE_CBC, ""))
- ) {
- $iv_size = mcrypt_enc_get_iv_size($td);
- $iv = substr($cipher, 0, $iv_size);
-
- // session corruption? (#1485970)
- if (strlen($iv) < $iv_size) {
- return '';
- }
-
- $cipher = substr($cipher, $iv_size);
- mcrypt_generic_init($td, $ckey, $iv);
- $clear = mdecrypt_generic($td, $cipher);
- mcrypt_generic_deinit($td);
- mcrypt_module_close($td);
- }
- else {
- @include_once 'des.inc';
-
- if (function_exists('des')) {
- $des_iv_size = 8;
- $iv = substr($cipher, 0, $des_iv_size);
- $cipher = substr($cipher, $des_iv_size);
- $clear = des($ckey, $cipher, 0, 1, $iv);
- }
- else {
- self::raise_error(array(
- 'code' => 500, 'type' => 'php',
- 'file' => __FILE__, 'line' => __LINE__,
- 'message' => "Could not perform decryption; make sure OpenSSL or Mcrypt or lib/des.inc is available"
- ), true, true);
- }
+ // session corruption? (#1485970)
+ if (strlen($iv) < $iv_size) {
+ return '';
}
- // Trim PHP's padding and the canary byte; see note in
- // rcube::encrypt() and http://php.net/mcrypt_generic#68082
- $clear = substr(rtrim($clear, "\0"), 0, -1);
+ $cipher = substr($cipher, $iv_size);
+ $clear = openssl_decrypt($cipher, $method, $ckey, $opts, $iv);
return $clear;
- }
-
- /**
- * Generates encryption initialization vector (IV)
- *
- * @param int $size Vector size
- *
- * @return string Vector string
- */
- private function create_iv($size)
- {
- // mcrypt_create_iv() can be slow when system lacks entrophy
- // we'll generate IV vector manually
- $iv = '';
- for ($i = 0; $i < $size; $i++) {
- $iv .= chr(mt_rand(0, 255));
- }
-
- return $iv;
}
/**
@@ -992,15 +900,14 @@
*/
public function get_request_token()
{
- $sess_id = $_COOKIE[ini_get('session.name')];
- if (!$sess_id) {
- $sess_id = session_id();
+ if (empty($_SESSION['request_token'])) {
+ $plugin = $this->plugins->exec_hook('request_token', array(
+ 'value' => rcube_utils::random_bytes(32)));
+
+ $_SESSION['request_token'] = $plugin['value'];
}
- $plugin = $this->plugins->exec_hook('request_token', array(
- 'value' => md5('RT' . $this->get_user_id() . $this->config->get('des_key') . $sess_id)));
-
- return $plugin['value'];
+ return $_SESSION['request_token'];
}
/**
@@ -1360,7 +1267,7 @@
*/
public static function log_bug($arg_arr)
{
- $program = strtoupper(!empty($arg_arr['type']) ? $arg_arr['type'] : 'php');
+ $program = strtoupper($arg_arr['type'] ?: 'php');
$level = self::get_instance()->config->get('debug_level');
// disable errors for ajax requests, write to log instead (#1487831)
@@ -1370,11 +1277,18 @@
// write error to local log file
if (($level & 1) || !empty($arg_arr['fatal'])) {
+ $post_query = '';
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
- $post_query = '?_task='.urlencode($_POST['_task']).'&_action='.urlencode($_POST['_action']);
- }
- else {
- $post_query = '';
+ foreach (array('_task', '_action') as $arg) {
+ if ($_POST[$arg] && !$_GET[$arg]) {
+ $post_query[$arg] = $_POST[$arg];
+ }
+ }
+
+ if (!empty($post_query)) {
+ $post_query = (strpos($_SERVER['REQUEST_URI'], '?') != false ? '&' : '?')
+ . http_build_query($post_query, '', '&');
+ }
}
$log_entry = sprintf("%s Error: %s%s (%s %s)",
@@ -1642,13 +1556,8 @@
if (strlen($headers['Bcc']))
$a_recipients[] = $headers['Bcc'];
- // clean Bcc from header for recipients
- $send_headers = $headers;
- unset($send_headers['Bcc']);
- // here too, it because txtHeaders() below use $message->_headers not only $send_headers
- unset($message->_headers['Bcc']);
-
- $smtp_headers = $message->txtHeaders($send_headers, true);
+ // remove Bcc header and get the whole head of the message as string
+ $smtp_headers = $this->message_head($message, array('Bcc'));
if ($message->getParam('delay_file_io')) {
// use common temp dir
@@ -1688,19 +1597,13 @@
}
// send mail using PHP's mail() function
else {
- // unset some headers because they will be added by the mail() function
- $headers_enc = $message->headers($headers);
- $headers_php = $message->_headers;
- unset($headers_php['To'], $headers_php['Subject']);
-
- // reset stored headers and overwrite
- $message->_headers = array();
- $header_str = $message->txtHeaders($headers_php);
+ // unset To,Subject headers because they will be added by the mail() function
+ $header_str = $this->message_head($message, array('To', 'Subject'));
// #1485779
if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
- if (preg_match_all('/<([^@]+@[^>]+)>/', $headers_enc['To'], $m)) {
- $headers_enc['To'] = implode(', ', $m[1]);
+ if (preg_match_all('/<([^@]+@[^>]+)>/', $headers['To'], $m)) {
+ $headers['To'] = implode(', ', $m[1]);
}
}
@@ -1714,8 +1617,8 @@
}
else {
$delim = $this->config->header_delimiter();
- $to = $headers_enc['To'];
- $subject = $headers_enc['Subject'];
+ $to = $headers['To'];
+ $subject = $headers['Subject'];
$header_str = rtrim($header_str);
if ($delim != "\r\n") {
@@ -1768,11 +1671,24 @@
fclose($msg_body);
}
- $message->_headers = array();
- $message->headers($headers);
+ $message->headers($headers, true);
return $sent;
}
+
+ /**
+ * Return message headers as a string
+ */
+ protected function message_head($message, $unset = array())
+ {
+ // requires Mail_mime >= 1.9.0
+ $headers = array();
+ foreach ((array) $unset as $header) {
+ $headers[$header] = null;
+ }
+
+ return $message->txtHeaders($headers, true);
+ }
}
--
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