CWE-779: Logging of Excessive Data
CWE版本: 4.18
更新日期: 2025-09-09
弱点描述
The product logs too much information, making log files hard to process and possibly hindering recovery efforts or forensic analysis after an attack.
扩展描述
While logging is a good practice in general, and very high levels of logging are appropriate for debugging stages of development, too much logging in a production environment might hinder a system administrator's ability to detect anomalous conditions. This can provide cover for an attacker while attempting to penetrate a system, clutter the audit trail for forensic analysis, or make it more difficult to debug problems in a production environment.
常见后果
影响范围: Availability
技术影响: DoS: Resource Consumption (CPU) DoS: Resource Consumption (Other)
说明: Log files can become so large that they consume excessive resources, such as disk and CPU, which can hinder the performance of the system.
影响范围: Non-Repudiation
技术影响: Hide Activities
说明: Logging too much information can make the log files of less use to forensics analysts and developers when trying to diagnose a problem or recover from an attack.
影响范围: Non-Repudiation
技术影响: Hide Activities
说明: If system administrators are unable to effectively process log files, attempted attacks may go undetected, possibly leading to eventual system compromise.
潜在缓解措施
阶段: Architecture and Design
描述: Suppress large numbers of duplicate log messages and replace them with periodic summaries. For example, syslog may include an entry that states "last message repeated X times" when recording repeated events.
阶段: Architecture and Design
描述: Support a maximum size for the log file that can be controlled by the administrator. If the maximum size is reached, the admin should be notified. Also, consider reducing functionality of the product. This may result in a denial-of-service to legitimate product users, but it will prevent the product from adversely impacting the entire system.
阶段: Implementation
描述: Adjust configurations appropriately when the product is transitioned from a debug state to production.
观察示例
参考: CVE-2007-0421
server records a large amount of data to the server log when it receives malformed headers
参考: CVE-2002-1154
chain: application does not restrict access to front-end for updates, which allows attacker to fill the error log
引入模式
| 阶段 | 说明 |
|---|---|
| Operation | 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 |
|---|---|---|---|
| ISA/IEC 62443 | Part 3-3 | Req SR 7.2 | - |
| ISA/IEC 62443 | Part 4-1 | Req SD-1 | - |
| ISA/IEC 62443 | Part 4-1 | Req SVV-3 | - |
| ISA/IEC 62443 | Part 4-2 | Req CR 7.2 | - |