CVE-2024-23672

Apache Tomcat: WebSocket DoS with incomplete closing handshake

MEDIUM 6.3

At a glance

Source: NVD
EPSS: EPSS 2.31 % · percentile 83 (2026-10-28)
State: PUBLISHED
Published: 2024-03-13 15:48 UTC
Updated: 2025-10-29 11:57 UTC
Assigner: apache
NVD status: Modified

Description

Denial of Service via incomplete cleanup vulnerability in Apache Tomcat. It was possible for WebSocket clients to keep WebSocket connections open leading to increased resource consumption.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18, from 9.0.0-M1 through 9.0.85, from 8.5.0 through 8.5.98. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M17, 10.1.19, 9.0.86 or 8.5.99 which fix the issue.

Weaknesses (CWE)

CWE-459 — Incomplete Cleanup

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L	CISA-ADP
CVSS 3.1	MEDIUM 6.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Advisories

GHSA-v682-8vv8-vpwr — Denial of Service via incomplete cleanup vulnerability in Apache Tomcat

European references

ENISA EUVD · EUVD-2024-1010
GCVE · GCVE-0-2024-23672

CERT-FR advisories

CERTFR-2026-AVI-0395 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-0281 — Multiples vulnérabilités dans les produits Splunk · cert.ssi.gouv.fr
CERTFR-2025-AVI-0215 — Multiples vulnérabilités dans VMware Tanzu Gemfire · cert.ssi.gouv.fr
CERTFR-2024-AVI-0514 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2024-AVI-0432 — Multiples vulnérabilités dans les produits Atlassian · cert.ssi.gouv.fr
CERTFR-2024-AVI-0322 — Multiples vulnérabilités dans Oracle Database Server · cert.ssi.gouv.fr
CERTFR-2024-AVI-0218 — Multiples vulnérabilités dans Apache Tomcat · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 8.5.0 < 8.5.99
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 9.0.0 < 9.0.86
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 10.1.0 < 10.1.19
cpe:2.3:a:apache:tomcat:11.0.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone10:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone11:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone12:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone13:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone14:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone15:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone16:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone2:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone3:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone4:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone5:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone6:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone7:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone8:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:11.0.0:milestone9:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*

Affected products

Product	Versions
Apache Software Foundation · Apache Tomcat	affected 11.0.0-M1 ≤ 11.0.0-M16 ; affected 10.1.0-M1 ≤ 10.1.18 ; affected 9.0.0-M1 ≤ 9.0.85 ; affected 8.5.0 ≤ 8.5.98 ; unknown 7 < 8.5.0 ; unknown 10.0.0-M1 ≤ 10.0.27

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD