CWE-408 不正确的行为次序：早期放大攻击
Incorrect Behavior Order: Early Amplification
结构: Simple
Abstraction: Base
状态: Draft
被利用可能性: unkown
基本描述
The software allows an entity to perform a legitimate but expensive operation before authentication or authorization has taken place.
相关缺陷
-
cwe_Nature: ChildOf cwe_CWE_ID: 405 cwe_View_ID: 699 cwe_Ordinal: Primary
-
cwe_Nature: ChildOf cwe_CWE_ID: 696 cwe_View_ID: 1000 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 |
|---|---|---|
| Availability | ['DoS: Amplification', 'DoS: Crash, Exit, or Restart', 'DoS: Resource Consumption (CPU)', 'DoS: Resource Consumption (Memory)'] | System resources, CPU and memory, can be quickly consumed. This can lead to poor system performance or system crash. |
示例代码
例
This data prints the contents of a specified file requested by a user.
bad PHP
//read file into string
$file = file_get_contents($filename);
if ($file && isOwnerOf($username,$filename)){
return true;
}
else{
}
return false;
}
This code first reads a specified file into memory, then prints the file if the user is authorized to see its contents. The read of the file into memory may be resource intensive and is unnecessary if the user is not allowed to see the file anyway.
分析过的案例
| 标识 | 说明 | 链接 |
|---|---|---|
Notes
分类映射
| 映射的分类名 | ImNode ID | Fit | Mapped Node Name |
|---|---|---|---|
| PLOVER | Early Amplification |
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