VULNERABILITY INTELLIGENCE

CVE-2021-3597

CVSS score5.9 MEDIUM

EPSS probability1.16%

CISA KEVNot currently listed

Published2022-05-24

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

A flaw was found in undertow. The HTTP2SourceChannel fails to write the final frame under some circumstances, resulting in a denial of service. The highest threat from this vulnerability is availability. This flaw affects Undertow versions prior to 2.0.35.SP1, prior to 2.2.6.SP1, prior to 2.2.7.SP1, prior to 2.0.36.SP1, prior to 2.2.9.Final and prior to 2.0.39.Final.

Weakness classification

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Primary references

secalert@redhat.com — Issue Tracking, Third Party Advisory
secalert@redhat.com — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory