// For flags

CVE-2024-23672

Apache Tomcat: WebSocket DoS with incomplete closing handshake

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

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.

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.

Denegación de servicio mediante vulnerabilidad de limpieza incompleta en Apache Tomcat. Los clientes de WebSocket podían mantener abiertas las conexiones de WebSocket, lo que generaba un mayor consumo de recursos. Este problema afecta a Apache Tomcat: desde 11.0.0-M1 hasta 11.0.0-M16, desde 10.1.0-M1 hasta 10.1.18, desde 9.0. 0-M1 hasta 9.0.85, desde 8.5.0 hasta 8.5.98. Se recomienda a los usuarios actualizar a la versión 11.0.0-M17, 10.1.19, 9.0.86 u 8.5.99, que solucionan el problema.

A denial of service (DoS) vulnerability present in the Apache Tomcat package arises from an incomplete cleanup process. Specifically, WebSocket clients can perpetuate WebSocket connections without proper termination, thereby causing a sustained drain on system resources. This vulnerability facilitates the exploitation of Apache Tomcat servers, leading to a scenario where excessive resource consumption occurs due to the prolonged existence of these open WebSocket connections. As a consequence, the server's performance may degrade significantly, resulting in potential service disruption or unresponsiveness.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-01-19 CVE Reserved
  • 2024-03-13 CVE Published
  • 2024-06-24 EPSS Updated
  • 2024-08-01 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-459: Incomplete Cleanup
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apache Software Foundation
Search vendor "Apache Software Foundation"
Apache Tomcat
Search vendor "Apache Software Foundation" for product "Apache Tomcat"
>= 11.0.0-M1 <= 11.0.0-M16
Search vendor "Apache Software Foundation" for product "Apache Tomcat" and version " >= 11.0.0-M1 <= 11.0.0-M16"
en
Affected
Apache Software Foundation
Search vendor "Apache Software Foundation"
Apache Tomcat
Search vendor "Apache Software Foundation" for product "Apache Tomcat"
>= 10.1.0-M1 <= 10.1.18
Search vendor "Apache Software Foundation" for product "Apache Tomcat" and version " >= 10.1.0-M1 <= 10.1.18"
en
Affected
Apache Software Foundation
Search vendor "Apache Software Foundation"
Apache Tomcat
Search vendor "Apache Software Foundation" for product "Apache Tomcat"
>= 9.0.0-M1 <= 9.0.85
Search vendor "Apache Software Foundation" for product "Apache Tomcat" and version " >= 9.0.0-M1 <= 9.0.85"
en
Affected
Apache Software Foundation
Search vendor "Apache Software Foundation"
Apache Tomcat
Search vendor "Apache Software Foundation" for product "Apache Tomcat"
>= 8.5.0 <= 8.5.98
Search vendor "Apache Software Foundation" for product "Apache Tomcat" and version " >= 8.5.0 <= 8.5.98"
en
Affected