CVE-2024-1635

Published: Feb 19, 2024

Modified: Mar 17, 2026

PUBLISHED

CVSS v3.1

7.5

HIGH

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.

Vendor	Product	Versions
Unknown	undertow	affected `1.31.0`
Red Hat	Red Hat build of Apache Camel 4.4.1 for Spring Boot 3.2	All versions
Red Hat	Red Hat Fuse 7.13.0	All versions
Red Hat	Red Hat JBoss Enterprise Application Platform	unaffected `2.2.30.SP1-redhat-00001 - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7	unaffected `0:1.5.5.016-1.redhat_00001.1.ep7.el7 - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7	unaffected `1:1.5.5.016-1.redhat_00001.1.ep7.el7 - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7	unaffected `0:3.5.11-1.Final_redhat_00001.1.ep7.el7 - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7	unaffected `0:1.14.2-1.redhat_00002.1.ep7.el7 - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7	unaffected `0:1.4.18-14.SP13_redhat_00001.1.ep7.el7 - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7	unaffected `0:7.1.10-2.GA_redhat_00002.1.ep7.el7 - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7	unaffected `0:5.0.3-2.redhat_00002.1.ep7.el7 - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7	unaffected `0:2.0.10-2.redhat_00002.1.ep7.el7 - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7	unaffected `0:2.10.4-3.redhat_00006.1.el7eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7	unaffected `0:2.10.4-3.redhat_00006.1.el7eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7	unaffected `0:2.10.4-5.redhat_00006.1.el7eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7	unaffected `0:2.10.4-3.redhat_00006.1.el7eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7	unaffected `0:2.10.4-5.redhat_00006.1.el7eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7	unaffected `0:2.10.4-2.redhat_00006.1.el7eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7	unaffected `0:1.7.2-16.Final_redhat_00017.1.el7eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7	unaffected `0:4.1.63-5.Final_redhat_00003.1.el7eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7	unaffected `0:2.0.41-4.SP5_redhat_00001.1.el7eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7	unaffected `0:7.3.14-3.GA_redhat_00002.1.el7eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7	unaffected `0:1.10.17-1.Final_redhat_00001.1.el7eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8	unaffected `0:2.2.30-1.SP1_redhat_00001.1.el8eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9	unaffected `0:2.2.30-1.SP1_redhat_00001.1.el9eap - < *`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7	unaffected `0:2.2.30-1.SP1_redhat_00001.1.el7eap - < *`
Red Hat	Red Hat Single Sign-On 7.6 for RHEL 7	unaffected `0:18.0.13-1.redhat_00001.1.el7sso - < *`
Red Hat	Red Hat Single Sign-On 7.6 for RHEL 8	unaffected `0:18.0.13-1.redhat_00001.1.el8sso - < *`
Red Hat	Red Hat Single Sign-On 7.6 for RHEL 9	unaffected `0:18.0.13-1.redhat_00001.1.el9sso - < *`
Red Hat	RHEL-8 based Middleware Containers	unaffected `7.6-46 - < *`
Red Hat	RHSSO 7.6.8	All versions
Red Hat	OpenShift Serverless	All versions
Red Hat	Red Hat build of Apache Camel 4 for Quarkus 3	All versions
Red Hat	Red Hat build of Apache Camel for Spring Boot 3	All versions
Red Hat	Red Hat build of Apache Camel for Spring Boot 4	All versions
Red Hat	Red Hat build of Apicurio Registry 2	All versions
Red Hat	Red Hat Build of Keycloak	All versions
Red Hat	Red Hat build of OptaPlanner 8	All versions
Red Hat	Red Hat build of Quarkus	All versions
Red Hat	Red Hat build of Quarkus	All versions
Red Hat	Red Hat Data Grid 8	All versions
Red Hat	Red Hat Integration Camel K 1	All versions
Red Hat	Red Hat Integration Camel Quarkus 2	All versions
Red Hat	Red Hat JBoss Data Grid 7	All versions
Red Hat	Red Hat JBoss Enterprise Application Platform 8	All versions
Red Hat	Red Hat JBoss Fuse Service Works 6	All versions
Red Hat	Red Hat Process Automation 7	All versions
Red Hat	streams for Apache Kafka	All versions