If a field of a serializable type contains a pointer, a handle, or some other data structure that is specific to a particular environment, and cannot be meaningfully reconstituted in a different environment, then you might want to apply NonSerializedAttribute to that field.Īny reason to not mark something as serializable The default serialization process excludes fields that are marked with NonSerializedAttribute. Apply the SerializableAttribute even if the class also implements the ISerializable interface to control the serialization process.Īll the public and private fields in a type that are marked by the SerializableAttribute are serialized by default, unless the type implements the ISerializable interface to override the serialization process. Through serialization, a developer can perform actions like sending the object to a remote application by means of a Web Service, passing an object from one domain to another, passing an object through a firewall as an XML string, or maintaining security or user-specific information across applications.Īpply SerializableAttribute to a type to indicate that instances of this type can be serialized. Serialization allows the developer to save the state of an object and recreate it as needed, providing storage of objects as well as data exchange. However, if you want to store the contents of an object to a file, send an object to another process or transmit it across the network, you do have to think about how the object is represented because you will need to convert to a different format. Net Framework takes care of that for you. Net framework application, you don't need to think about how the data is stored in memory. If it is considered unavoidable to place serialized objects into request parameters, then it may be possible to prevent attacks by also placing a server-generated cryptographic signature of the object into the same request, and validating the signature before performing deserialization or other processing on the object.When you create an object in a. Generally, it is possible to transmit application data in plain non-serialized form, and handle it with the same precautions that apply to all client-submitted data. The best way to avoid vulnerabilities that arise from the use of serialized objects is not to pass these in request parameters, or expose them in any other way to the client. Remediation: Serialized object in HTTP message Vulnerabilities in native deserialization functions often allow practical exploitation without source code access. However, it is still highly recommended to fix the underlying vulnerability. This may mitigate the practical impact of this issue in many situations. An attacker may be able to cause unauthorized code execution on the server, by controlling the server-side function that is invoked when the object is processed.Īctual exploitation of any code execution vulnerabilities arising from the application's use of serialized objects will typically require the attacker to have access to the source code of the server-side application.An attacker may be able to interfere with server-side logic by tampering with the contents of the object and re-serializing it.Any sensitive data contained within the object can be viewed by the user.This behavior can expose the application in various ways, including: Twitter WhatsApp Facebook Reddit LinkedIn Emailĭescription: Serialized object in HTTP messageĪpplications may submit a serialized object in a request parameter.
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