CWE-594 J2EE框架：将不可序列化的对象存储到磁盘上

J2EE Framework: Saving Unserializable Objects to Disk

结构: Simple

Abstraction: Variant

状态: Incomplete

被利用可能性: unkown

基本描述

When the J2EE container attempts to write unserializable objects to disk there is no guarantee that the process will complete successfully.

扩展描述

In heavy load conditions, most J2EE application frameworks flush objects to disk to manage memory requirements of incoming requests. For example, session scoped objects, and even application scoped objects, are written to disk when required. While these application frameworks do the real work of writing objects to disk, they do not enforce that those objects be serializable, thus leaving the web application vulnerable to crashes induced by serialization failure. An attacker may be able to mount a denial of service attack by sending enough requests to the server to force the web application to save objects to disk.

适用平台

Language: {'cwe_Name': 'Java', 'cwe_Prevalence': 'Undetermined'}

常见的影响

范围	影响	注释
Integrity	Modify Application Data	Data represented by unserializable objects can be corrupted.
Availability	DoS: Crash, Exit, or Restart	Non-serializability of objects can lead to system crash.

可能的缓解方案

['Architecture and Design', 'Implementation']

策略:

All objects that become part of session and application scope must implement the java.io.Serializable interface to ensure serializability of containing objects.

示例代码

例

In the following Java example, a Customer Entity JavaBean provides access to customer information in a database for a business application. The Customer Entity JavaBean is used as a session scoped object to return customer information to a Session EJB.

bad Java

@Entity
public class Customer {

private String id;
private String firstName;
private String lastName;
private Address address;

public Customer() {
}

public Customer(String id, String firstName, String lastName) {...}

@Id
public String getCustomerId() {...}

public void setCustomerId(String id) {...}

public String getFirstName() {...}

public void setFirstName(String firstName) {...}

public String getLastName() {...}

public void setLastName(String lastName) {...}

@OneToOne()
public Address getAddress() {...}

public void setAddress(Address address) {...}

}

However, the Customer Entity JavaBean is an unserialized object which can cause serialization failure and crash the application when the J2EE container attempts to write the object to the system. Session scoped objects must implement the Serializable interface to ensure that the objects serialize properly.

good Java

public class Customer implements Serializable {...}

分类映射

映射的分类名	ImNode ID	Fit	Mapped Node Name
Software Fault Patterns	SFP1		Glitch in computation

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