名称: Missing Initialization of Resource
The product does not initialize a critical resource.
基本信息
背景详情
引入方式
Implementation适用平台
编程语言
类： Not Language-Specific (Undetermined)常见后果
| 影响范围 | 影响 | 可能性 |
|---|---|---|
| Other | Varies by Context 注意： If a resource is not initialized, it could contain unpredictable or expired data, or it could be initialized to defaults that are invalid. This can have security implications when the resource is expected to have certain properties or values. | |
| Confidentiality | Read Memory, Read Application Data 注意： When reusing a resource such as memory or a program variable, the original contents of that resource may not be cleared before it is sent to an untrusted party. | |
| Availability | DoS: Crash, Exit, or Restart 注意： The uninitialized resource may contain values that cause program flow to change in ways that the programmer did not intend. |
观察示例
| 参考资料 | 描述 |
|---|---|
CVE-2020-20739 | A variable that has its value set in a conditional statement is sometimes used when the conditional fails, sometimes causing data leakage |
CVE-2005-1036 | Chain: Bypass of access restrictions due to improper authorization (CWE-862) of a user results from an improperly initialized (CWE-909) I/O permission bitmap |
潜在缓解措施
Phases : ImplementationExplicitly initialize the resource before use. If this is performed through an API function or standard procedure, follow all specified steps.
Phases : Implementation
Pay close attention to complex conditionals that affect initialization, since some branches might not perform the initialization.
Phases : Implementation
Avoid race conditions (CWE-362) during initialization routines.
Phases : Build and Compilation
Run or compile your product with settings that generate warnings about uninitialized variables or data.
检测方法
Automated Static Analysis
Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)有效性 : High
漏洞映射说明
依据 : This CWE entry is a Class and might have Base-level children that would be more appropriate备注 : Examine children of this entry to see if there is a better fit
提交记录
| 名称 | 组织 | 日期 | 发布日期 | Version |
|---|---|---|---|---|
| CWE Content Team | MITRE | 2.4 |
修改记录
| 名称 | 组织 | 日期 | 备注 |
|---|---|---|---|
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Demonstrative_Examples, Observed_Examples | |
| CWE Content Team | MITRE | updated Description, Potential_Mitigations, Relationships | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Mapping_Notes, Type | |
| CWE Content Team | MITRE | updated Detection_Factors | |
| CWE Content Team | MITRE | updated Background_Details, Common_Consequences, Demonstrative_Examples, Description |
