Disclosure of classpath resources on Windows when mounted on a wildcard route in vertx-web
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Partial Red Hat: 2 fixed, 7 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-22 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| vert-x3 | vertx-web | 4.0.0 to before 4.3.8 | 4.3.8 | Patch available | CNA |
| — | io.vertx:vertx-web (Maven) | 4.0.0 to before 4.3.8 | 4.3.8 | Patch available | GHSA-53jx-vvf9-4x38 |
- vertx-web Vendorvert-x3 Affected 4.0.0 to before 4.3.8 Fixed in 4.3.8 Patch available CNA
- io.vertx:vertx-web (Maven) Vendor— Affected 4.0.0 to before 4.3.8 Fixed in 4.3.8 Patch available GHSA-53jx-vvf9-4x38
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:eclipse:vert.x-web:*:*:*:*:*:*:*:* | 4.0.0 to before 4.3.8 | Vulnerable | Eclipse Foundation |
- cpe:2.3:a:eclipse:vert.x-web:*:*:*:*:*:*:*:* Versions 4.0.0 to before 4.3.8 Vulnerable ·Eclipse Foundation
Remediation
- Fix · CNA vertx-web (vert-x3) Fixed in 4.3.8
- Fix · GHSA-53jx-vvf9-4x38 io.vertx:vertx-web (Maven) Fixed in 4.3.8 Advisory →
Red Hat 2 advisories
- RHSA-2023:7669 Released 2023-12-06 · Red Hat rating ModerateRed Hat build of Cryostat 2.4.0: new RHEL 8 container images
- Cryostat 2 on RHEL 8 cryostat-tech-preview/cryostat-grafana-dashboard-rhel8, cryostat-tech-preview/cryostat-operator-bundle, cryostat-tech-preview/cryostat-reports-rhel8 +3
- RHSA-2023:3740 Released 2023-06-21 · Red Hat rating ImportantRed Hat Integration Camel for Spring Boot 3.20.1 Patch 1 release security update
- RHINT Camel-Springboot 3.20.1.P1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Integration Camel K 1 | Affected | No fix planned: Will not fix |
| Red Hat Integration Camel Quarkus 2 | Affected | No fix planned: Will not fix |
| Red Hat OpenShift Application Runtimes | Affected | No fix yet |
| Red Hat Process Automation 7 | Affected | No fix planned: Out of support scope |
| Red Hat build of Apicurio Registry 2 | Affected | No fix planned: Will not fix |
| Red Hat build of OptaPlanner 8 | Affected | No fix planned: Will not fix |
| Red Hat build of Quarkus | Affected | No fix planned: Will not fix |
| Cryostat 2 on RHEL 8 | Fixed | RHSA-2023:7669 |
| RHINT Camel-Springboot 3.20.1.P1 | Fixed | RHSA-2023:3740 |
Not affected: 9 products
- A-MQ Clients 2
- Red Hat Data Grid 8
- Red Hat Fuse 7
- Red Hat JBoss Data Grid 7
- Red Hat JBoss Enterprise Application Platform 7
- Red Hat JBoss Enterprise Application Platform 8
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat build of Debezium 1
- streams for Apache Kafka
Timeline
- 2026-10-02 Threatist record created from CVE-2023-24815
- 2026-10-03 Alias added: GHSA-53jx-vvf9-4x38
References
More Eclipse Foundation Vert.x-web vulnerabilities
- TI-2026-00756 Eclipse Vert.x Web static handler file access denial CVSS 4.0MEDIUM 6.9
- TI-2020-17897 Vert.x-Web framework v4.0 milestone 1-4 does not perform a correct CSRF verification. CVSS 3.1HIGH 8.8
Sources
- CVE-2023-24815 · CVE Program
- CVE-2023-24815 · NVD
- FIRST EPSS
- GHSA-53jx-vvf9-4x38 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-24815 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences