Io.vertx/vertx-core: memory leak due to the use of netty fastthreadlocal data structures in vertx (CVE-2024-1023)
Published Last modified Sources: Red Hat, CVE.org, OSV
What is affected, what to do
A vulnerability in the Eclipse Vert.x toolkit results in a memory leak due to using Netty FastThreadLocal data structures. Specifically, when the Vert.x HTTP client establishes connections to different hosts, triggering the memory leak.
Update Red Hat Cryostat 2 on RHEL 8 to version 2.4.0-7, Red Hat Cryostat 2 on RHEL 8 to version 2.4.0-4, Red Hat Cryostat 2 on RHEL 8 to version 2.4.0-9.
- Affected
- Vertx-core
eq 4.4.5..4.4.5 - Vertx-core
eq 4.4.6..4.4.6 - Vertx-core
eq 4.5.0..4.5.0 - Vertx-core
eq 4.5.1..4.5.1 - Red Hat Cryostat 2 on RHEL 8
lt *..2.4.0-7 - Red Hat Cryostat 2 on RHEL 8
lt *..2.4.0-4 - Red Hat Cryostat 2 on RHEL 8
lt *..2.4.0-9 - Red Hat MTA-6.2-RHEL-9
lt *..6.2.3-2 - Red Hat build of Quarkus 3.2.11.Final
lt *..4.4.8.redhat-00001
- Vertx-core
- Fixed in
- Red Hat Cryostat 2 on RHEL 8
2.4.0-7 - Red Hat Cryostat 2 on RHEL 8
2.4.0-4 - Red Hat Cryostat 2 on RHEL 8
2.4.0-9 - Red Hat MTA-6.2-RHEL-9
6.2.3-2 - Red Hat build of Quarkus 3.2.11.Final
4.4.8.redhat-00001
- Red Hat Cryostat 2 on RHEL 8
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Metrics
6.5
Priority
XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.
Source: NVD, CVSS v3
6.5
CVSS v3
Severity Medium on the scale from 0 to 10.
Source: Red Hat, CVE.org, OSV
1.7 %
EPSS score
Moderate — model estimates 1-10% exploitation likelihood.
Source: FIRST EPSS, percentile 76.4
Show all metrics
- Severity
- Medium
Priority (0–325)
The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?
Read in glossary- 84.03 Methodology
Exploit maturity
An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.
Read in glossary- no public PoC known
XIEM Effective CVSS
XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.
Read in glossary- 6.5 Methodology
CVSS v3
CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.
Read in glossary- 6.5
EPSS score
The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.
Read in glossary- 1.7 %
- Moderate — model estimates 1-10% exploitation likelihood.
EPSS percentile
The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.
Read in glossary- 76.4
- High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status
The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.
Read in glossary- —
- Published
CWE
CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.
Read in glossary- CWE-401
Detection rules
No NEOSEC detection rule is available for this vulnerability yet.
Classification under NIS2 and CRA
Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.
NIS2
NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.
Read in glossary- Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
CRA
The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.
Read in glossary- From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001
ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.
Read in glossary- Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.
Description
A vulnerability in the Eclipse Vert.x toolkit results in a memory leak due to using Netty FastThreadLocal data structures. Specifically, when the Vert.x HTTP client establishes connections to different hosts, triggering the memory leak. The leak can be accelerated with intimate runtime knowledge, allowing an attacker to exploit this vulnerability. For instance, a server accepting arbitrary internet addresses could serve as an attack vector by connecting to these addresses, thereby accelerating the memory leak.
Source: redhat_csaf, NVD (NIST), OSV (Open Source Vulnerabilities), cvelistv5
Affected products
The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.
| Affected versions | Fixed in | ||
|---|---|---|---|
| — | vertx-core |
|
|
| Red Hat | A-MQ Clients 2 |
|
|
| Red Hat | CEQ 3.2 |
|
|
| Red Hat | Cryostat 2 on RHEL 8 |
|
|
| Red Hat | Migration Toolkit for Runtimes |
|
|
| Red Hat | MTA-6.2-RHEL-9 |
|
|
| 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 for Quarkus 3 |
|
|
| Red Hat | Red Hat build of Apache Camel 4.4.1 for Spring Boot 3.2 |
|
|
| 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 |
|
|
| 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 |
|
|
| maven | io.vertx:vertx-core |
|
|
Vendors and products
- Red Hat A-mq Clients 2
- Red Hat Mta-6.2-rhel-9
- 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
Weakness classes (CWE)
CWE-401Missing Release of Memory after Effective Lifetime
Variant
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
Entry at MITRE CWE-401
References & sources
- NVD (NIST)vuln/detail/CVE-2024-1023advisory
- github.comeclipse-vertx/vert.x/issues/5078web
- github.comeclipse-vertx/vert.x/pull/5080web
- github.comeclipse-vertx/vert.x/pull/5082web
- github.comeclipse-vertx/vert.x/commit/665ceba38444e3929bb7b9a2a0bae2cb603…web
- github.comeclipse-vertx/vert.x/commit/dd6f64302b56cd4d3dcf61efaaf174b5f6c…web
- access.redhat.comRHSA-2024:1662web, Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2024:1706web, Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2024:2088web, Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2024:2833web, Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2024:3527web, Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2024:3989web, Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2024:4884web, Vendor advisory, x_refsource_REDHAT
- access.redhat.comsecurity/cve/CVE-2024-1023web, Vulnerability database, x_refsource_REDHAT
- bugzilla.redhat.comRHBZ#2260840web, Issue tracking, x_refsource_REDHAT
- github.comeclipse-vertx/vert.xpackage
Changes to this CVE
Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).
Record modifiedRed Hat
Show 25 original changes
Individual changes of this event as published by NVD Type Action Before After Affected versions (publisher) added —Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2024/1xxx/CVE-2024-1023.json">CVE-2024-1023</a>Reference added —https://access.redhat.com/errata/RHSA-2024:1662Reference added —https://access.redhat.com/errata/RHSA-2024:1706Reference added —https://access.redhat.com/errata/RHSA-2024:2088Reference added —https://access.redhat.com/errata/RHSA-2024:2833Reference added —https://access.redhat.com/errata/RHSA-2024:3527Reference added —https://access.redhat.com/errata/RHSA-2024:3989Reference added —https://access.redhat.com/errata/RHSA-2024:4884Reference added —https://access.redhat.com/security/cve/CVE-2024-1023Reference added —https://bugzilla.redhat.com/show_bug.cgi?id=2260840Reference added —https://github.com/eclipse-vertx/vert.x/issues/5078Reference added —https://github.com/eclipse-vertx/vert.x/pull/5080Reference added —https://github.com/eclipse-vertx/vert.x/pull/5082Reference removed https://access.redhat.com/errata/RHSA-2024:1662—Reference removed https://access.redhat.com/errata/RHSA-2024:1706—Reference removed https://access.redhat.com/errata/RHSA-2024:2088—Reference removed https://access.redhat.com/errata/RHSA-2024:2833—Reference removed https://access.redhat.com/errata/RHSA-2024:3527—Reference removed https://access.redhat.com/errata/RHSA-2024:3989—Reference removed https://access.redhat.com/errata/RHSA-2024:4884—Reference removed https://access.redhat.com/security/cve/CVE-2024-1023—Reference removed https://bugzilla.redhat.com/show_bug.cgi?id=2260840—Reference removed https://github.com/eclipse-vertx/vert.x/issues/5078—Reference removed https://github.com/eclipse-vertx/vert.x/pull/5080—Reference removed https://github.com/eclipse-vertx/vert.x/pull/5082—Source identifier: secalert@redhat.com
Record modifiedCVE Program
Show 24 original changes
Individual changes of this event as published by NVD Type Action Before After Reference added —https://access.redhat.com/errata/RHSA-2024:1662Reference added —https://access.redhat.com/errata/RHSA-2024:1706Reference added —https://access.redhat.com/errata/RHSA-2024:2088Reference added —https://access.redhat.com/errata/RHSA-2024:2833Reference added —https://access.redhat.com/errata/RHSA-2024:3527Reference added —https://access.redhat.com/errata/RHSA-2024:3989Reference added —https://access.redhat.com/errata/RHSA-2024:4884Reference added —https://access.redhat.com/security/cve/CVE-2024-1023Reference added —https://bugzilla.redhat.com/show_bug.cgi?id=2260840Reference added —https://github.com/eclipse-vertx/vert.x/issues/5078Reference added —https://github.com/eclipse-vertx/vert.x/pull/5080Reference added —https://github.com/eclipse-vertx/vert.x/pull/5082Reference removed https://access.redhat.com/errata/RHSA-2024:1662—Reference removed https://access.redhat.com/errata/RHSA-2024:1706—Reference removed https://access.redhat.com/errata/RHSA-2024:2088—Reference removed https://access.redhat.com/errata/RHSA-2024:2833—Reference removed https://access.redhat.com/errata/RHSA-2024:3527—Reference removed https://access.redhat.com/errata/RHSA-2024:3989—Reference removed https://access.redhat.com/errata/RHSA-2024:4884—Reference removed https://access.redhat.com/security/cve/CVE-2024-1023—Reference removed https://bugzilla.redhat.com/show_bug.cgi?id=2260840—Reference removed https://github.com/eclipse-vertx/vert.x/issues/5078—Reference removed https://github.com/eclipse-vertx/vert.x/pull/5080—Reference removed https://github.com/eclipse-vertx/vert.x/pull/5082—Source identifier: af854a3a-2127-422b-91ae-364da2661108
Record modifiedRed Hat
1 individual change: Affected versions (publisher)
Show the original change
Individual changes of this event as published by NVD Type Action Before After Affected versions (publisher) changed …, CEQ 3.2, Cryostat 2 on RHEL 8 (+27)…, CEQ 3.2, Cryostat 2 on RHEL 8 (+27)Source identifier: secalert@redhat.com
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<a href="https://intel.neosec.eu/en/cve/CVE-2024-1023"><img src="https://intel.neosec.eu/badge/cve/CVE-2024-1023.svg?lang=en" alt="CVE-2024-1023 – NEOSEC Intel" height="20"></a>