Add new feature detection logic for FF 23 and 24.

lib/rex/exploitation/javascriptosdetect.js

@@ -52,6 +52,12 @@ window.os_detect.getVersion = function(){
 		return d.style[propCamelCase] === css;
 	}
 
+	var input_type_is_valid = function(input_type) {
+		var input = document.createElement('input');
+		input.setAttribute('type', input_type);
+		return input.type == input_type;
+	}
+
 	//--
 	// Client
 	//--
@@ -203,7 +209,12 @@ window.os_detect.getVersion = function(){
 		// Thanks to developer.mozilla.org "Firefox for developers" series for most
 		// of these.
 		// Release changelogs: http://www.mozilla.org/en-US/firefox/releases/
-		if ('HTMLTimeElement' in window) {
+		if ('DeviceStorage' in window && 'default' in window.DeviceStorage) {
+			// https://bugzilla.mozilla.org/show_bug.cgi?id=874213
+			ua_version = '24.0'
+		} else if (input_type_is_valid('range')) {
+			ua_version = '23.0'
+		} else if ('HTMLTimeElement' in window) {
 			ua_version = '22.0'
 		} else if ('createElement' in document &&
 		           document.createElement('main') &&