Vulnerability Description
A vulnerability was found in Undertow. This vulnerability impacts a server that supports the wildfly-http-client protocol. Whenever a malicious user opens and closes a connection with the HTTP port of the server and then closes the connection immediately, the server will end with both memory and open file limits exhausted at some point, depending on the amount of memory available. At HTTP upgrade to remoting, the WriteTimeoutStreamSinkConduit leaks connections if RemotingConnection is closed by Remoting ServerConnectionOpenListener. Because the remoting connection originates in Undertow as part of the HTTP upgrade, there is an external layer to the remoting connection. This connection is unaware of the outermost layer when closing the connection during the connection opening procedure. Hence, the Undertow WriteTimeoutStreamSinkConduit is not notified of the closed connection in this scenario. Because WriteTimeoutStreamSinkConduit creates a timeout task, the whole dependency tree leaks via that task, which is added to XNIO WorkerThread. So, the workerThread points to the Undertow conduit, which contains the connections and causes the leak.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Netapp | Active Iq Unified Manager | - |
| Netapp | Oncommand Workflow Automation | - |
| Redhat | Fuse | 1.0 |
| Redhat | Integration Camel For Spring Boot | - |
| Redhat | Jboss Enterprise Application Platform | 7.4 |
| Redhat | Openshift Container Platform | 4.11 |
| Redhat | Openshift Container Platform For Linuxone | 4.9 |
| Redhat | Openshift Container Platform For Power | 4.9 |
| Redhat | Single Sign-On | - |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2024:1674Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:1675Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:1676Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:1677Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:1860Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:1861Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:1862Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:1864Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:1866Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:3354Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:4884Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:4226Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:9583
- https://access.redhat.com/security/cve/CVE-2024-1635Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2264928Third Party Advisory
FAQ
What is CVE-2024-1635?
CVE-2024-1635 is a vulnerability with a CVSS score of 7.5 (HIGH). A vulnerability was found in Undertow. This vulnerability impacts a server that supports the wildfly-http-client protocol. Whenever a malicious user opens and closes a connection with the HTTP port of...
How severe is CVE-2024-1635?
CVE-2024-1635 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-1635?
Check the references section above for vendor advisories and patch information. Affected products include: Netapp Active Iq Unified Manager, Netapp Oncommand Workflow Automation, Redhat Fuse, Redhat Integration Camel For Spring Boot, Redhat Jboss Enterprise Application Platform.