Cloneable Class Containing Sensitive Information

Opis

The code contains a class with sensitive data, but the class is cloneable. The data can then be accessed by cloning the class.

Cloneable classes are effectively open classes, since data cannot be hidden in them. Classes that do not explicitly deny cloning can be cloned by any other class without running the constructor.

Skutki

• Access Control

  Bypass Protection Mechanism

  A class that can be cloned can be produced without executing the constructor. This is dangerous since the constructor may perform security-related checks. By allowing the object to be cloned, those checks may be bypassed.

Zapobieganie

• Implementation

  If you do make your classes clonable, ensure that your clone method is final and throw super.clone().

Słabość nadrzędna

• CWE-668 Exposure of Resource to Wrong Sphere

Może prowadzić do

• CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Kiedy powstaje

• Implementation

Dotyczy

Object-Oriented, C++, Java, C#

Źródła

1. The CLASP Application Security Process — Secure Software, Inc., 2005