Do not expose database error info

lib/cartodb/controllers/base.js

@@ -229,6 +229,18 @@ function stripConnectionInfo(message) {
         .replace(/is the server.*encountered/im, 'encountered');
 }
 
+var ERROR_INFO_TO_EXOSE = {
+    message: true,
+    layer: true,
+    type: true,
+    analysis: true,
+    subtype: true
+};
+
+function shouldBeExposed (prop) {
+    return !!ERROR_INFO_TO_EXOSE[prop];
+}
+
 function errorMessage(err) {
     // See https://github.com/Vizzuality/Windshaft-cartodb/issues/68
     var message = (_.isString(err) ? err : err.message) || 'Unknown error';
@@ -247,7 +259,7 @@ function errorMessageWithContext(err) {
 
     for (var prop in err) {
         // type & message are properties from Error's prototype and will be skipped
-        if (err.hasOwnProperty(prop)) {
+        if (err.hasOwnProperty(prop) && shouldBeExposed(prop)) {
             error[prop] = err[prop];
         }
     }