Memory Leak Affecting undertow package, versions <2.2.10-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
1.68% (76th percentile)

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  • Snyk IDSNYK-DEBIAN14-UNDERTOW-13803831
  • published2 Nov 2025
  • disclosed23 Aug 2022

Introduced: 23 Aug 2022

CVE-2021-3690  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade Debian:14 undertow to version 2.2.10-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream undertow package and not the undertow package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability.

CVSS Base Scores

version 3.1