CVE-2024-1300: Red Hat A-Mq Clients 2

Medium severity, CVSS 5.4. EPSS: 1.1% chance of exploitation in the next 30 days.

A vulnerability in the Eclipse Vert.x toolkit causes a memory leak in TCP servers configured with TLS and SNI support. When processing an unknown SNI server name assigned the default certificate instead of a mapped certificate, the SSL context is erroneously cached in the server name map, leading to memory exhaustion. This flaw allows attackers to send TLS client hello messages with fake server names, triggering a JVM out-of-memory error.

Affected products

• Red Hat A-Mq Clients 2
• Red Hat Ceq 3.2
• Red Hat Cryostat 2 On Rhel 8: before 2.4.0-7 (fixed in 2.4.0-7); before 2.4.0-4 (fixed in 2.4.0-4); before 2.4.0-9 (fixed in 2.4.0-9)
• Red Hat Migration Toolkit For Runtimes 1 On Rhel 8: before 1.2-18 (fixed in 1.2-18); before 1.2-11 (fixed in 1.2-11); before 1.2-12 (fixed in 1.2-12); before 1.2-10 (fixed in 1.2-10)
• Red Hat MTA-6.2-Rhel-9: before 6.2.3-2 (fixed in 6.2.3-2)
• Red Hat Openshift Serverless
• Red Hat Red Hat Amq Broker 7
• Red Hat Red Hat Amq Streams 2.7.0
• Red Hat Red Hat Build Of Apache Camel 4.4.1 For Spring Boot 3.2
• Red Hat Red Hat Build Of Apache Camel 4 For Quarkus 3
• Red Hat Red Hat Build Of Apache Camel For Spring Boot 3
• Red Hat Red Hat Build Of Keycloak
• Red Hat Red Hat Build Of Optaplanner 8
• Red Hat Red Hat Build Of Quarkus
• Red Hat Red Hat Build Of Quarkus 3.2.11.final: before 4.4.8.redhat-00001 (fixed in 4.4.8.redhat-00001)
• Red Hat Red Hat Data Grid 8
• Red Hat Red Hat Fuse 7
• Red Hat Red Hat Integration Camel K 1
• Red Hat Red Hat Integration Camel Quarkus 2
• Red Hat Red Hat JBoss Data Grid 7
• Red Hat Red Hat JBoss Enterprise Application Platform 7
• Red Hat Red Hat JBoss Enterprise Application Platform 8
• Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
• Red Hat Red Hat Process Automation 7
• Red Hat Rhint Service Registry 2.5.11 Ga

Published 2024-04-02. Last modified 2026-09-23.