Deserialisierungsrechte

Deserialisierungsrechte refers to the set of security vulnerabilities that can arise during the process of deserialization in software development. Deserialization is the process of converting a data stream or byte array back into a usable object in memory. When untrusted or malicious data is deserialized, it can be exploited to execute arbitrary code, leading to various security breaches.

These vulnerabilities often stem from the fact that deserialization mechanisms, especially in older or less secure implementations, may not adequately validate the incoming data. An attacker can craft a specially malformed data payload that, when deserialized, triggers unintended actions within the application. This might involve object injection, where a malicious object is inserted into the deserialization process, or a data stream that manipulates object references in a harmful way.

The consequences of deserialization vulnerabilities can be severe, ranging from denial-of-service attacks to complete system compromise. Attackers might be able to elevate their privileges, steal sensitive information, or install malware. Different programming languages and serialization formats have varying levels of susceptibility.

Mitigating deserialization vulnerabilities typically involves several strategies. Input validation is crucial, ensuring that only expected data structures and types are processed. Whitelisting known safe classes or types that can be deserialized is another effective approach. Secure coding practices, such as avoiding deserializing data from untrusted sources whenever possible, and keeping libraries and frameworks updated are also essential. Developers should be aware of the specific deserialization libraries and their known security risks.