Disclosure of classpath resources on Windows when mounted on a wildcard route in vertx-web

Vert.x-Web is a set of building blocks for building web applications in the java programming language. 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. When computing the relative path to locate the resource, in case of wildcards, the code: `return "/" + rest;` from `Utils.java` 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. This issue only affects users deploying in windows environments and upgrading is the advised remediation path. There are no known workarounds for this vulnerability.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

对路径名的限制不恰当(路径遍历)

Eclipse Vertx-web 路径遍历漏洞

Eclipse Vertx-web是Eclipse基金会的一个用于构建Web应用的框架。 Eclipse Vertx-web 4.3.8之前版本存在路径遍历漏洞，该漏洞源于如果挂载点是通配符，则攻击者可以泄露任何类路径资源。

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