CVE-2023-24815

Vulnerability Description

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 Score

Affected Products

Related Weaknesses (CWE)

References

• https://github.com/vert-x3/vertx-web/blob/62c0d66fa1c179ae6a4d57344631679a2b97e6Issue Tracking
• https://github.com/vert-x3/vertx-web/commit/9e3a783b1d1a731055e9049078b1b1494ecePatchVendor Advisory
• https://github.com/vert-x3/vertx-web/security/advisories/GHSA-53jx-vvf9-4x38ExploitVendor Advisory
• https://github.com/vert-x3/vertx-web/blob/62c0d66fa1c179ae6a4d57344631679a2b97e6Issue Tracking
• https://github.com/vert-x3/vertx-web/commit/9e3a783b1d1a731055e9049078b1b1494ecePatchVendor Advisory
• https://github.com/vert-x3/vertx-web/security/advisories/GHSA-53jx-vvf9-4x38ExploitVendor Advisory