CWE-396: Declaration of Catch for Generic Exception
CWE版本: 4.18
更新日期: 2025-09-09
弱点描述
Catching overly broad exceptions promotes complex error handling code that is more likely to contain security vulnerabilities.
扩展描述
Multiple catch blocks can get ugly and repetitive, but "condensing" catch blocks by catching a high-level class like Exception can obscure exceptions that deserve special treatment or that should not be caught at this point in the program. Catching an overly broad exception essentially defeats the purpose of a language's typed exceptions, and can become particularly dangerous if the program grows and begins to throw new types of exceptions. The new exception types will not receive any attention.
常见后果
影响范围: Non-Repudiation Other
技术影响: Hide Activities
说明: A generic exception can hide details about unexpected adversary activities by making it difficult to properly troubleshoot error conditions during execution.
检测方法
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
引入模式
| 阶段 | 说明 |
|---|---|
| Implementation | - |
适用平台
编程语言
分类映射
| 分类名称 | 条目ID | 条目名称 | 映射适配度 |
|---|---|---|---|
| 7 Pernicious Kingdoms | - | Overly-Broad Catch Block | - |
| Software Fault Patterns | SFP5 | Ambiguous Exception Type | - |
| OMG ASCSM | ASCSM-CWE-396 | - | |
| OMG ASCRM | ASCRM-CWE-396 | - |