Definition
Ysoserial is a programming tool that can exploit Java deserialization weaknesses. It includes modules called playloads, which generate a serialized object that initiates some action when implemented, compromising the system or its data.
How Ysoserial May be Used to Compromise Data
- Accessing unauthorized resources.
- Uploading malicious files.
- Implementing malicious code on targeted servers.
How to Detect and Prevent Unsafe Data Deserialization with Ysoserial
- Conduct integrity inspections, like digital signatures, to inhibit data tampering.
- Limit and track the incoming and outgoing network connectivity from deserialized servers.
- Impose stringent type constraints during deserialization.
- Log deserialization exclusions and failures.