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.
Affected products
netapp: active iq unified manager; netapp: oncommand workflow automation; redhat: fuse; redhat: integration camel for spring boot; redhat: jboss enterprise application platform; redhat: openshift container platform; redhat: openshift container platform for linuxone; redhat: openshift container platform for power; redhat: single sign-on
References10
- security.netapp.com/advisory/ntap-20240322-0007/ Vendor Advisory
- access.redhat.com/errata/RHSA-2024:1674 Third Party Advisory
- access.redhat.com/errata/RHSA-2024:1675 Third Party Advisory
- access.redhat.com/errata/RHSA-2024:1676 Third Party Advisory
- access.redhat.com/errata/RHSA-2024:1677 Third Party Advisory
- access.redhat.com/errata/RHSA-2024:1860 Third Party Advisory
- access.redhat.com/errata/RHSA-2024:1861 Third Party Advisory
- access.redhat.com/errata/RHSA-2024:1862 Third Party Advisory
- access.redhat.com/errata/RHSA-2024:1864 Third Party Advisory
- access.redhat.com/errata/RHSA-2024:1866 Third Party Advisory
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 5% percentile: 92 · as of 5 November 2026
- CWE
- CWE-400
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