{"id":"CVE-2024-1300","title":"A vulnerability in the Eclipse Vert.x toolkit causes a memory leak in TCP servers configured with TLS and SNI support","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 c…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L","cwe":["CWE-772"],"published":"2024-04-02","updated":"2026-08-04","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-1300","references":[{"url":"https://access.redhat.com/errata/RHSA-2024:1662","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:1706","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:1923","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:2088","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:2833","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:3527","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:3989","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:4884","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2024-1300","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2263139","label":"secalert@redhat.com"},{"url":"https://vertx.io/docs/vertx-core/java/#_server_name_indication_sni.","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:1662","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:1706","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:1923","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:2088","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:2833","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:3527","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:3989","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:4884","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/security/cve/CVE-2024-1300","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2263139","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://vertx.io/docs/vertx-core/java/#_server_name_indication_sni.","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","cve.org"],"epss":0.01064,"epssPercentile":0.62735,"ingestedAt":"2026-08-05T10:46:47.925Z","vendor":"Red Hat","product":"io.vertx:vertx-core","affected":["io.vertx:vertx-core >= 4.3.4 <= 4.5.2","vertx-core","cryostat-tech-preview/cryostat-grafana-dashboard-rhel8 (all versions)","cryostat-tech-preview/cryostat-operator-bundle (all versions)","cryostat-tech-preview/cryostat-reports-rhel8 (all versions)","cryostat-tech-preview/cryostat-rhel8 (all versions)","cryostat-tech-preview/cryostat-rhel8-operator (all versions)","cryostat-tech-preview/jfr-datasource-rhel8 (all versions)","mtr/mtr-operator-bundle (all versions)","mtr/mtr-rhel8-operator (all versions)","mtr/mtr-web-container-rhel8 (all versions)","mtr/mtr-web-executor-container-rhel8 (all versions)","mta/mta-windup-addon-rhel9 (all versions)","vertx-core","vertx-core","io.vertx/vertx-core (all versions)","vertx-core","vertx-core","vertx-core","vertx-core","vertx-core (all versions)","vertx-core (all versions)","vertx-core (all versions)","vertx-core (all versions)","vertx-core (all versions)","vertx-core","vertx-core","vertx-core (all versions)","vertx-core (all versions)","vertx-core (all versions)","vertx-core","vertx-core","vertx-core","vertx-core (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-04-02T15:16:36.592165Z"},"slug":"CVE-2024-1300","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}