CVE-2021-21234— Lukashinsch Spring Boot Actuator Logview 路径遍历漏洞
一分钟漏洞结论
影响对象
lukashinsch spring-boot-actuator-logview
利用判断
存在公开或 AI PoC，应优先验证
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Lukashinsch Spring Boot Actuator Logview是Ffay（Lukashinsch）个人开发者的一个为Spring Boot提供通过Web界面查看日志功能的代码库。 spring-boot-actuator-logview 0.2.13之前版本存在路径遍历漏洞，该漏洞源于filename参数未被检查。
公开利用映射 1
Nuclei · 1
CVE-2021-21234.yaml [template]
可能的 ATT&CK 技术 1 AI
T1083 · File and Directory Discovery
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一、 漏洞 CVE-2021-21234 基础信息
漏洞信息
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Vulnerability Title
Directory Traversal
来源: CVE Program / CVE List V5
Vulnerability Description
spring-boot-actuator-logview in a library that adds a simple logfile viewer as spring boot actuator endpoint. It is maven package "eu.hinsch:spring-boot-actuator-logview". In spring-boot-actuator-logview before version 0.2.13 there is a directory traversal vulnerability. The nature of this library is to expose a log file directory via admin (spring boot actuator) HTTP endpoints. Both the filename to view and a base folder (relative to the logging folder root) can be specified via request parameters. While the filename parameter was checked to prevent directory traversal exploits (so that `filename=../somefile` would not work), the base folder parameter was not sufficiently checked, so that `filename=somefile&base=../` could access a file outside the logging base directory). The vulnerability has been patched in release 0.2.13. Any users of 0.2.12 should be able to update without any issues as there are no other changes in that release. There is no workaround to fix the vulnerability other than updating or removing the dependency. However, removing read access of the user the application is run with to any directory not required for running the application can limit the impact. Additionally, access to the logview endpoint can be limited by deploying the application behind a reverse proxy.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
来源: CVE Program / CVE List V5
Vulnerability Title
Lukashinsch Spring Boot Actuator Logview 路径遍历漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Lukashinsch Spring Boot Actuator Logview是Ffay（Lukashinsch）个人开发者的一个为Spring Boot提供通过Web界面查看日志功能的代码库。 spring-boot-actuator-logview 0.2.13之前版本存在路径遍历漏洞，该漏洞源于filename参数未被检查。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| lukashinsch | spring-boot-actuator-logview | < 0.2.13 | - |
|
二、漏洞 CVE-2021-21234 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|---|---|---|
| 1 | Directory traversal vulnerability in the spring-boot-actuator-logview library | https://github.com/PwCNO-CTO/CVE-2021-21234 | POC详情 |
| 2 | None | https://github.com/xiaojiangxl/CVE-2021-21234 | POC详情 |
| 3 | spring-boot-actuator-logview before version 0.2.13 contains a directory traversal vulnerability in libraries that adds a simple logfile viewer as a spring boot actuator endpoint (maven package "eu.hinsch:spring-boot-actuator-logview". | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21234.yaml | POC详情 |
| 4 | None | https://github.com/Threekiii/Awesome-POC/blob/master/%E5%BC%80%E5%8F%91%E6%A1%86%E6%9E%B6%E6%BC%8F%E6%B4%9E/Spring%20Boot%20%E7%9B%AE%E5%BD%95%E9%81%8D%E5%8E%86%20CVE-2021-21234.md | POC详情 |
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CVE-2021-21234 补丁与修复 (2)
CVE-2021-21234 厂商安全公告 (1)
CVE-2021-21234 其他参考 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2021-21234
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