CWE-491 公开的可克隆方法（对象劫持）
Public cloneable() Method Without Final ('Object Hijack')
结构: Simple
Abstraction: Variant
状态: Draft
被利用可能性: unkown
基本描述
A class has a cloneable() method that is not declared final, which allows an object to be created without calling the constructor. This can cause the object to be in an unexpected state.
相关缺陷
- cwe_Nature: ChildOf cwe_CWE_ID: 668 cwe_View_ID: 1000 cwe_Ordinal: Primary
适用平台
Language: {'cwe_Name': 'Java', 'cwe_Prevalence': 'Undetermined'}
常见的影响
| 范围 | 影响 | 注释 |
|---|---|---|
| ['Integrity', 'Other'] | ['Unexpected State', 'Varies by Context'] |
可能的缓解方案
Implementation
策略:
Make the cloneable() method final.
示例代码
例
In this example, a public class "BankAccount" implements the cloneable() method which declares "Object clone(string accountnumber)":
bad Java
public class BankAccount implements Cloneable{
public Object clone(String accountnumber) throws
CloneNotSupportedException
{
CloneNotSupportedException
{
Object returnMe = new BankAccount(account number);
...
...
}
}
例
In the example below, a clone() method is defined without being declared final.
bad Java
protected Object clone() throws CloneNotSupportedException {
...
}
分类映射
| 映射的分类名 | ImNode ID | Fit | Mapped Node Name |
|---|---|---|---|
| 7 Pernicious Kingdoms | Mobile Code: Object Hijack | ||
| The CERT Oracle Secure Coding Standard for Java (2011) | OBJ07-J | Sensitive classes must not let themselves be copied | |
| Software Fault Patterns | SFP28 | Unexpected access points |
引用
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