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This CVE record is currently being enriched by team members, this process results in the association of reference link tags, CVSS, CWE, and CPE applicability statement data
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.
Metrics
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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
Added
CVSS V3.1
Red Hat, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added
CWE
Red Hat, Inc. CWE-400
Added
Reference
Red Hat, Inc. https://access.redhat.com/security/cve/CVE-2024-1635 [No types assigned]
Added
Reference
Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=2264928 [No types assigned]
Quick Info
CVE Dictionary Entry: CVE-2024-1635 NVD
Published Date: 02/19/2024 NVD
Last Modified: 04/27/2025
Source: Red Hat, Inc.