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Vulnerability Details : CVE-2021-42340

The fix for bug 63362 present in Apache Tomcat 10.1.0-M1 to 10.1.0-M5, 10.0.0-M1 to 10.0.11, 9.0.40 to 9.0.53 and 8.5.60 to 8.5.71 introduced a memory leak. The object introduced to collect metrics for HTTP upgrade connections was not released for WebSocket connections once the connection was closed. This created a memory leak that, over time, could lead to a denial of service via an OutOfMemoryError.
Publish Date : 2021-10-14 Last Update Date : 2021-12-04
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 772

- Products Affected By CVE-2021-42340

# Product Type Vendor Product Version Update Edition Language
1 Application Apache Tomcat * * * * Version Details Vulnerabilities
2 Application Apache Tomcat 10.0.0 Milestone10 * * Version Details Vulnerabilities
3 Application Apache Tomcat 10.1.0 Milestone4 * * Version Details Vulnerabilities
4 Application Apache Tomcat 10.1.0 Milestone5 * * Version Details Vulnerabilities
5 Application Apache Tomcat 10.1.0 Milestone1 * * Version Details Vulnerabilities
6 Application Apache Tomcat 10.1.0 Milestone2 * * Version Details Vulnerabilities
7 Application Apache Tomcat 10.1.0 Milestone3 * * Version Details Vulnerabilities
8 OS Debian Debian Linux 11.0 * * * Version Details Vulnerabilities
9 Application Netapp HCI - * * * Version Details Vulnerabilities
10 Application Netapp Management Services For Element Software - * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Apache Tomcat 7
Debian Debian Linux 1
Netapp HCI 1
Netapp Management Services For Element Software 1

- References For CVE-2021-42340 CONFIRM
MLIST [myfaces-commits] 20211021 [myfaces-tobago] branch tobago-5.x updated: build: workaround for CVE-2021-42340

- Metasploit Modules Related To CVE-2021-42340

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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