Description
The code contains a class with sensitive data, but the class does not explicitly deny serialization. The data can be accessed by serializing the class through another class.
Serializable classes are effectively open classes since data cannot be hidden in them. Classes that do not explicitly deny serialization can be serialized by any other class, which can then in turn use the data stored inside it.
Modes of Introduction:
– Implementation
Likelihood of Exploit: High
Related Weaknesses
CWE-668
CWE-200
Consequences
Confidentiality: Read Application Data
an attacker can write out the class to a byte stream, then extract the important data from it.
Potential Mitigations
Phase: Implementation
Description:
In Java, explicitly define final writeObject() to prevent serialization. This is the recommended solution. Define the writeObject() function to throw an exception explicitly denying serialization.
Phase: Implementation
Description:
Make sure to prevent serialization of your objects.
CVE References
