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EUVD-2026-221593

fkie_cve-2023-24815

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.

GHSA-53jx-vvf9-4x38 — StaticHandler disclosure of classpath resources on Windows when mounted on a wildcard route

Affected: Maven: io.vertx:vertx-web

### 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

gsd-2023-24815

RHSA-2023:3740 — Red Hat Security Advisory: Red Hat Integration Camel for Spring Boot 3.20.1 Patch 1 release security update

spring-boot: Spring Boot Welcome Page DoS Vulnerability vertx-web: StaticHandler disclosure of classpath resources on Windows when mounted on a wildcard route

WID-SEC-W-2023-3072 — Red Hat Enterprise Linux(Cryostat): Mehrere Schwachstellen

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen oder Informationen offenzulegen.