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Missing Release of Resource after Effective Lifetime Affecting tomcat9 package, versions <9.0.43-2~deb11u3

Severity

 Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    2.71% (91st percentile)

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  • Snyk ID SNYK-DEBIAN11-TOMCAT9-1734790
  • published 16 Oct 2021
  • disclosed 14 Oct 2021
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Introduced: 14 Oct 2021

CVE-2021-42340 Open this link in a new tab
CWE-772 Open this link in a new tab

How to fix?

Upgrade Debian:11 tomcat9 to version 9.0.43-2~deb11u3 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:11 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.

References

CVSS Scores

version 3.1
Expand this section

NVD

Recommended
7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
Expand this section

Red Hat

7.5 high