Missing Release of Resource after Effective Lifetime Affecting tomcat9 package, versions *


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
4.13% (93rd percentile)

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  • Snyk IDSNYK-UBUNTU2004-TOMCAT9-1766769
  • published23 Oct 2021
  • disclosed14 Oct 2021

Introduced: 14 Oct 2021

CVE-2021-42340  (opens in a new tab)
CWE-772  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:20.04 tomcat9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat9 package and not the tomcat9 package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

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.

CVSS Scores

version 3.1