CVE-2021-3597

Name of the Vulnerable Software and Affected Versions Undertow versions prior to 2.0.35.SP1 Undertow versions prior to 2.0.36.SP1 Undertow versions prior to 2.0.39.Final Undertow versions prior to 2.2.6.SP1 Undertow versions prior to 2.2.7.SP1 Undertow versions prior to 2.2.9.Final

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.

Recommendations For versions prior to 2.0.35.SP1, update to version 2.0.35.SP1 or later. For versions prior to 2.0.36.SP1, update to version 2.0.36.SP1 or later. For versions prior to 2.0.39.Final, update to version 2.0.39.Final or later. For versions prior to 2.2.6.SP1, update to version 2.2.6.SP1 or later. For versions prior to 2.2.7.SP1, update to version 2.2.7.SP1 or later. For versions prior to 2.2.9.Final, update to version 2.2.9.Final or later.