Path Traversal in Eclipse Vert.x-Web
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.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.009 (56.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Eclipse Vert.x-web
- Vert-x3 Vertx-web — versions >= 4.0.0, < 4.3.8
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
Frequently asked questions
- What is CVE-2023-24815?
- CVE-2023-24815 is a medium-severity vulnerability in Eclipse Vert.x-Web, classified under Path Traversal. CVSS score: 4.8/10. Published 2023-02-09.
- How severe is CVE-2023-24815?
- Medium severity. CVSS v3 base score is 4.8 out of 10.