diff --git a/phpBB/phpbb/install/helper/iohandler/ajax_iohandler.php b/phpBB/phpbb/install/helper/iohandler/ajax_iohandler.php
index c168d26425..a40d457466 100644
--- a/phpBB/phpbb/install/helper/iohandler/ajax_iohandler.php
+++ b/phpBB/phpbb/install/helper/iohandler/ajax_iohandler.php
@@ -120,6 +120,14 @@ class ajax_iohandler extends iohandler_base
 		return $this->request->variable($name, $default, $multibyte);
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_raw_input($name, $default)
+	{
+		return $this->request->raw_variable($name, $default);
+	}
+
 	/**
 	 * {@inheritdoc}
 	 */
diff --git a/phpBB/phpbb/install/helper/iohandler/cli_iohandler.php b/phpBB/phpbb/install/helper/iohandler/cli_iohandler.php
index 196cdcdaab..4117a3dfd3 100644
--- a/phpBB/phpbb/install/helper/iohandler/cli_iohandler.php
+++ b/phpBB/phpbb/install/helper/iohandler/cli_iohandler.php
@@ -74,6 +74,20 @@ class cli_iohandler extends iohandler_base
 		return $result;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_raw_input($name, $default)
+	{
+		return $this->get_input($name, $default, true);
+	}
+
+	/**
+	 * Set input variable
+	 *
+	 * @param string $name Name of input variable
+	 * @param mixed $value Value of input variable
+	 */
 	public function set_input($name, $value)
 	{
 		$this->input_values[$name] = $value;
diff --git a/phpBB/phpbb/install/helper/iohandler/iohandler_interface.php b/phpBB/phpbb/install/helper/iohandler/iohandler_interface.php
index f22f33d9cb..440748901c 100644
--- a/phpBB/phpbb/install/helper/iohandler/iohandler_interface.php
+++ b/phpBB/phpbb/install/helper/iohandler/iohandler_interface.php
@@ -38,10 +38,21 @@ interface iohandler_interface
 	 */
 	public function get_input($name, $default, $multibyte = false);
 
+	/**
+	 * Returns raw input variable
+	 *
+	 * @param string	$name		Name of the input variable to obtain
+	 * @param mixed		$default	A default value that is returned if the variable was not set.
+	 * 								This function will always return a value of the same type as the default.
+	 *
+	 * @return mixed	Value of the raw input variable
+	 */
+	public function get_raw_input($name, $default);
+
 	/**
 	 * Returns server variable
 	 *
-	 * This function should work the same as request_interterface::server().
+	 * This function should work the same as request_interface::server().
 	 *
 	 * @param string	$name		Name of the server variable
 	 * @param mixed		$default	Default value to return when the requested variable does not exist
@@ -51,7 +62,7 @@ interface iohandler_interface
 	public function get_server_variable($name, $default = '');
 
 	/**
-	 * Wrapper function for request_interterface::header()
+	 * Wrapper function for request_interface::header()
 	 *
 	 * @param string	$name		Name of the request header variable
 	 * @param mixed		$default	Default value to return when the requested variable does not exist
diff --git a/phpBB/phpbb/install/module/obtain_data/task/obtain_database_data.php b/phpBB/phpbb/install/module/obtain_data/task/obtain_database_data.php
index ce720dbf76..dc7b060746 100644
--- a/phpBB/phpbb/install/module/obtain_data/task/obtain_database_data.php
+++ b/phpBB/phpbb/install/module/obtain_data/task/obtain_database_data.php
@@ -79,7 +79,7 @@ class obtain_database_data extends \phpbb\install\task_base implements \phpbb\in
 		$dbhost			= $this->io_handler->get_input('dbhost', '', true);
 		$dbport			= $this->io_handler->get_input('dbport', '');
 		$dbuser			= $this->io_handler->get_input('dbuser', '');
-		$dbpasswd		= $this->io_handler->get_input('dbpasswd', '', true);
+		$dbpasswd		= $this->io_handler->get_raw_input('dbpasswd', '');
 		$dbname			= $this->io_handler->get_input('dbname', '');
 		$table_prefix	= $this->io_handler->get_input('table_prefix', '');
 
diff --git a/phpBB/phpbb/request/request.php b/phpBB/phpbb/request/request.php
index 4cac6fbaea..92d4213180 100644
--- a/phpBB/phpbb/request/request.php
+++ b/phpBB/phpbb/request/request.php
@@ -224,6 +224,51 @@ class request implements \phpbb\request\request_interface
 		return $this->_variable($var_name, $default, $multibyte, $super_global, false);
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
+	public function raw_variable($var_name, $default, $super_global = \phpbb\request\request_interface::REQUEST)
+	{
+		$path = false;
+
+		// deep direct access to multi dimensional arrays
+		if (is_array($var_name))
+		{
+			$path = $var_name;
+			// make sure at least the variable name is specified
+			if (empty($path))
+			{
+				return (is_array($default)) ? array() : $default;
+			}
+			// the variable name is the first element on the path
+			$var_name = array_shift($path);
+		}
+
+		if (!isset($this->input[$super_global][$var_name]))
+		{
+			return (is_array($default)) ? array() : $default;
+		}
+		$var = $this->input[$super_global][$var_name];
+
+		if ($path)
+		{
+			// walk through the array structure and find the element we are looking for
+			foreach ($path as $key)
+			{
+				if (is_array($var) && isset($var[$key]))
+				{
+					$var = $var[$key];
+				}
+				else
+				{
+					return (is_array($default)) ? array() : $default;
+				}
+			}
+		}
+
+		return $var;
+	}
+
 	/**
 	* Shortcut method to retrieve SERVER variables.
 	*
@@ -369,41 +414,14 @@ class request implements \phpbb\request\request_interface
 	*/
 	protected function _variable($var_name, $default, $multibyte = false, $super_global = \phpbb\request\request_interface::REQUEST, $trim = true)
 	{
-		$path = false;
+		$var = $this->raw_variable($var_name, $default, $super_global);
 
-		// deep direct access to multi dimensional arrays
-		if (is_array($var_name))
+		// Return prematurely if raw variable is empty array or the same as
+		// the default. Using strict comparison to ensure that one can't
+		// prevent proper type checking on any input variable
+		if ($var === array() || $var === $default)
 		{
-			$path = $var_name;
-			// make sure at least the variable name is specified
-			if (empty($path))
-			{
-				return (is_array($default)) ? array() : $default;
-			}
-			// the variable name is the first element on the path
-			$var_name = array_shift($path);
-		}
-
-		if (!isset($this->input[$super_global][$var_name]))
-		{
-			return (is_array($default)) ? array() : $default;
-		}
-		$var = $this->input[$super_global][$var_name];
-
-		if ($path)
-		{
-			// walk through the array structure and find the element we are looking for
-			foreach ($path as $key)
-			{
-				if (is_array($var) && isset($var[$key]))
-				{
-					$var = $var[$key];
-				}
-				else
-				{
-					return (is_array($default)) ? array() : $default;
-				}
-			}
+			return $var;
 		}
 
 		$this->type_cast_helper->recursive_set_var($var, $default, $multibyte, $trim);
diff --git a/phpBB/phpbb/request/request_interface.php b/phpBB/phpbb/request/request_interface.php
index 47b3b3a4ed..3bfa8bb424 100644
--- a/phpBB/phpbb/request/request_interface.php
+++ b/phpBB/phpbb/request/request_interface.php
@@ -64,6 +64,28 @@ interface request_interface
 	*/
 	public function variable($var_name, $default, $multibyte = false, $super_global = \phpbb\request\request_interface::REQUEST);
 
+	/**
+	 * Get a variable without trimming strings and without escaping.
+	 * This method MUST NOT be used with queries.
+	 * Same functionality as variable(), except does not run trim() on strings
+	 * and does not escape input.
+	 * This method should only be used when the raw input is needed without
+	 * any escaping, i.e. for database password during the installation.
+	 *
+	 * @param	string|array	$var_name	The form variable's name from which data shall be retrieved.
+	 * 										If the value is an array this may be an array of indizes which will give
+	 * 										direct access to a value at any depth. E.g. if the value of "var" is array(1 => "a")
+	 * 										then specifying array("var", 1) as the name will return "a".
+	 * @param	mixed			$default	A default value that is returned if the variable was not set.
+	 * 										This function will always return a value of the same type as the default.
+	 * @param	\phpbb\request\request_interface::POST|GET|REQUEST|COOKIE	$super_global
+	 * 										Specifies which super global should be used
+	 *
+	 * @return	mixed	The value of $_REQUEST[$var_name] run through {@link set_var set_var} to ensure that the type is the
+	 *					the same as that of $default. If the variable is not set $default is returned.
+	 */
+	public function raw_variable($var_name, $default, $super_global = \phpbb\request\request_interface::REQUEST);
+
 	/**
 	* Shortcut method to retrieve SERVER variables.
 	*
diff --git a/tests/mock/request.php b/tests/mock/request.php
index e7217a94a9..6a32ba0cf1 100644
--- a/tests/mock/request.php
+++ b/tests/mock/request.php
@@ -34,6 +34,11 @@ class phpbb_mock_request implements \phpbb\request\request_interface
 		$this->data[$super_global][$var_name] = $value;
 	}
 
+	public function raw_variable($var_name, $default, $super_global = \phpbb\request\request_interface::REQUEST)
+	{
+		return $this->variable($var_name, $default, true, $super_global);
+	}
+
 	public function variable($var_name, $default, $multibyte = false, $super_global = \phpbb\request\request_interface::REQUEST)
 	{
 		return isset($this->data[$super_global][$var_name]) ? $this->data[$super_global][$var_name] : $default;