CWE-641: Improper Restriction of Names for Files and Other Resources
CWE版本: 4.18
更新日期: 2025-09-09
弱点描述
The product constructs the name of a file or other resource using input from an upstream component, but it does not restrict or incorrectly restricts the resulting name.
扩展描述
This may produce resultant weaknesses. For instance, if the names of these resources contain scripting characters, it is possible that a script may get executed in the client's browser if the application ever displays the name of the resource on a dynamically generated web page. Alternately, if the resources are consumed by some application parser, a specially crafted name can exploit some vulnerability internal to the parser, potentially resulting in execution of arbitrary code on the server machine. The problems will vary based on the context of usage of such malformed resource names and whether vulnerabilities are present in or assumptions are made by the targeted technology that would make code execution possible.
常见后果
影响范围: Integrity Confidentiality Availability
技术影响: Execute Unauthorized Code or Commands
说明: Execution of arbitrary code in the context of usage of the resources with dangerous names.
影响范围: Confidentiality Availability
技术影响: Read Application Data DoS: Crash, Exit, or Restart
说明: Crash of the consumer code of these resources resulting in information leakage or denial of service.
潜在缓解措施
阶段: Architecture and Design
描述: Do not allow users to control names of resources used on the server side.
阶段: Architecture and Design
描述: Perform allowlist input validation at entry points and also before consuming the resources. Reject bad file names rather than trying to cleanse them.
阶段: Architecture and Design
描述: Make sure that technologies consuming the resources are not vulnerable (e.g. buffer overflow, format string, etc.) in a way that would allow code execution if the name of the resource is malformed.
引入模式
| 阶段 | 说明 |
|---|---|
| Architecture and Design | - |
| Implementation | REALIZATION: This weakness is caused during implementation of an architectural security tactic. |
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 |
|---|---|---|---|
| Software Fault Patterns | SFP24 | Tainted input to command | - |