Missing Release of Resource after Effective Lifetime Affecting tomcat9 package, versions <9.0.54-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
2.71% (91st percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-TOMCAT9-1734792
  • published16 Oct 2021
  • disclosed14 Oct 2021

Introduced: 14 Oct 2021

CVE-2021-42340  (opens in a new tab)
CWE-772  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Debian:unstable tomcat9 to version 9.0.54-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat9 package and not the tomcat9 package as distributed by Debian. See How to fix? for Debian:unstable 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