CVE-2023-24815

MEDIUM4.8EPSS 0.35%

StaticHandler disclosure of classpath resources on Windows when mounted on a wildcard route

發布日:2023/2/10修改日:2023/11/8
也稱為:GHSA-53jx-vvf9-4x38

描述

### Summary When running vertx web applications that serve files using `StaticHandler` on Windows Operating Systems and Windows File Systems, if the mount point is a wildcard (`*`) then an attacker can exfiltrate any class path resource. ### Details When computing the relative path to locate the resource, in case of wildcards, the code: https://github.com/vert-x3/vertx-web/blob/62c0d66fa1c179ae6a4d57344631679a2b97e60f/vertx-web/src/main/java/io/vertx/ext/web/impl/Utils.java#L83 returns the user input (without validation) as the segment to lookup. Even though checks are performed to avoid escaping the sandbox, given that the input was not sanitized `\` are not properly handled and an attacker can build a path that is valid within the classpath. ### PoC https://github.com/adrien-aubert-drovio/vertx-statichandler-windows-traversal-path-vulnerability

受影響套件(1)

CVSS 分數

來源版本嚴重程度向量
osvCVSS 3.1MEDIUM4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

參考連結(5)