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Fencer Vulns
medium 5.4

CVE-2024-1300 json

Io.vertx:vertx-core: memory leak when a tcp server is configured with tls and sni support

published 2024-04-02 2 y ago modified 2026-11-05 3 d ago also GHSA-9ph3-v2vh-3qx7 , EUVD-2024-1174

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven io.vertx:vertx-core 4.4.8, 4.5.3
  • Red Hat Cryostat 2 on RHEL 8 2.4.0-4, 2.4.0-7, 2.4.0-9
  • Red Hat Migration Toolkit for Runtimes 1 on RHEL 8 1.2-10, 1.2-11, 1.2-12, 1.2-18
  • Red Hat MTA-6.2-RHEL-9 6.2.3-2
  • Red Hat Red Hat build of Quarkus 3.2.11.Final 4.4.8.redhat-00001

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-1300 updated cvss 5.4

io.vertx:vertx-core: memory leak when a TCP server is configured with TLS and SNI support

  • Red Hat build of Apache Camel 4 for Quarkus 3 vertx-core
    affected: workaround, no fix available
  • Red Hat build of Apache Camel for Spring Boot 3 vertx-core
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Build of Keycloak vertx-core
    affected: workaround, no fix available
  • Red Hat build of OptaPlanner 8 vertx-core Red Hat build of Quarkus vertx-core Red Hat Integration Camel K 1 vertx-core Red Hat Integration Camel Quarkus 2 vertx-core Red Hat JBoss Data Grid 7 vertx-core Red Hat Process Automation 7 vertx-core
    affected: workaround, no fix planned “Will not fix”
  • Red Hat CEQ 3.2
    fixed: vendor fix RHSA-2024:1706
  • Red Hat Cryostat 2 on RHEL 8 cryostat-tech-preview/cryostat-rhel8 2.4.0-4, cryostat-tech-preview/jfr-datasource-rhel8 2.4.0-4, cryostat-tech-preview/cryostat-reports-rhel8 2.4.0-4, cryostat-tech-preview/cryostat-rhel8-operator 2.4.0-9, cryostat-tech-preview/cryostat-operator-bundle 2.4.0-4, cryostat-tech-preview/cryostat-grafana-dashboard-rhel8 2.4.0-7
    fixed: vendor fix RHSA-2024:2088
  • Red Hat Migration Toolkit for Runtimes 1 on RHEL 8 mtr/mtr-rhel8-operator 1.2-11, mtr/mtr-operator-bundle 1.2-18, mtr/mtr-web-container-rhel8 1.2-12, mtr/mtr-web-executor-container-rhel8 1.2-10
    fixed: vendor fix RHSA-2024:1923
  • Red Hat MTA 6.2 for RHEL 8 mta/mta-windup-addon-rhel9 6.2.3-2
    fixed: vendor fix RHSA-2024:3989
show 5 more
  • Red Hat AMQ Streams 2.7.0
    fixed: vendor fix RHSA-2024:3527
  • Red Hat build of Apache Camel 4.4.1 for Spring Boot 3.2
    fixed: vendor fix RHSA-2024:4884
  • Red Hat build of Quarkus 3.2.11.Final vertx-core 4.4.8.redhat-00001
    fixed: vendor fix RHSA-2024:1662
  • Red Hat RHINT Service Registry 2.5.11 GA
    fixed: vendor fix RHSA-2024:2833
  • Red Hat A-MQ Clients 2 vertx-core Red Hat MTA 6.2 for RHEL 8 mta/mta-ui-rhel9 6.2.3-2, mta/mta-hub-rhel9 6.2.3-1, mta/mta-rhel8-operator 6.2.3-1, mta/mta-operator-bundle 6.2.3-4, mta/mta-pathfinder-rhel9 6.2.3-1 Red Hat OpenShift Serverless vertx-core Red Hat AMQ Broker 7 vertx-core Red Hat build of Quarkus 3.2.11.Final jna 5.8.0, lit 2.7.4, bson 4.9.1, db2 1.18.3, h2 2.2.220, jdom 1.1.3, +1046 more Red Hat Data Grid 8 vertx-core
    +4 more products
    Red Hat Fuse 7 vertx-core Red Hat JBoss Enterprise Application Platform 7 vertx-core Red Hat JBoss Enterprise Application Platform 8 vertx-core Red Hat JBoss Enterprise Application Platform Expansion Pack vertx-core
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
GitHub 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

Affected packages

ecosystem package affected fixed in
maven io.vertx:vertx-core
>=4.3.4, <4.4.8
>=4.5.0, <4.5.3
4.4.8
4.5.3

Affected products

  • Red Hat CEQ 3.2
  • Red Hat Cryostat 2 on RHEL 8
  • Red Hat Migration Toolkit for Runtimes 1 on RHEL 8
  • Red Hat MTA-6.2-RHEL-9
  • 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 Quarkus 3.2.11.Final
  • Red Hat RHINT Service Registry 2.5.11 GA
  • Red Hat A-MQ Clients 2
  • Red Hat OpenShift Serverless
  • Red Hat Red Hat AMQ Broker 7
  • 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 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

Classification

Weakness
  • CWE-772 Missing Release of Resource after Effective Lifetime
  • CWE-400 Uncontrolled Resource Consumption
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.