CWE-230 缺失值处理不恰当

Improper Handling of Missing Values

结构: Simple

Abstraction: Variant

状态: Draft

被利用可能性: unkown

基本描述

The software does not handle or incorrectly handles when a parameter, field, or argument name is specified, but the associated value is missing, i.e. it is empty, blank, or null.

相关缺陷

  • cwe_Nature: ChildOf cwe_CWE_ID: 229 cwe_View_ID: 1000 cwe_Ordinal: Primary

  • cwe_Nature: ChildOf cwe_CWE_ID: 229 cwe_View_ID: 699 cwe_Ordinal: Primary

适用平台

Language: {'cwe_Class': 'Language-Independent', 'cwe_Prevalence': 'Undetermined'}

常见的影响

范围 影响 注释
Integrity Unexpected State

示例代码

例

This application has registered to handle a URL when sent an intent:

bad Java


...
IntentFilter filter = new IntentFilter("com.example.URLHandler.openURL");
MyReceiver receiver = new MyReceiver();
registerReceiver(receiver, filter);
...

public class UrlHandlerReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if("com.example.URLHandler.openURL".equals(intent.getAction())) {
String URL = intent.getStringExtra("URLToOpen");
int length = URL.length();

...
}
}
}

The application assumes the URL will always be included in the intent. When the URL is not present, the call to getStringExtra() will return null, thus causing a null pointer exception when length() is called.

分析过的案例

标识 说明 链接
CVE-2002-0422 Blank Host header triggers resultant infoleak. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0422
CVE-2000-1006 Blank "charset" attribute in MIME header triggers crash. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-1006
CVE-2004-1504 Blank parameter causes external error infoleak. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1504
CVE-2005-2053 Blank parameter causes external error infoleak. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2053

Notes

分类映射

映射的分类名 ImNode ID Fit Mapped Node Name
PLOVER Missing Value Error
The CERT Oracle Secure Coding Standard for Java (2011) ERR08-J Do not catch NullPointerException or any of its ancestors