CWE-530: Exposure of Backup File to an Unauthorized Control Sphere
CWE版本: 4.18
更新日期: 2025-09-09
弱点描述
A backup file is stored in a directory or archive that is made accessible to unauthorized actors.
扩展描述
Often, older backup files are renamed with an extension such as .~bk to distinguish them from production files. The source code for old files that have been renamed in this manner and left in the webroot can often be retrieved. This renaming may have been performed automatically by the web server, or manually by the administrator.
常见后果
影响范围: Confidentiality
技术影响: Read Application Data
说明: At a minimum, an attacker who retrieves this file would have all the information contained in it, whether that be database calls, the format of parameters accepted by the application, or simply information regarding the architectural structure of your site.
潜在缓解措施
阶段: Policy
描述: Recommendations include implementing a security policy within your organization that prohibits backing up web application source code in the webroot.
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 |
|---|---|
| Operation | OMISSION: This weakness is caused by missing a security tactic during the architecture and design phase. |