CVE-2021-3690

HIGH CVSS: 7.5 Published: 2022-08-23 Modified: 2026-06-17

Description

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.

Affected Platforms

Redhat UndertowRedhat Openshift Application RuntimesRedhat Enterprise LinuxRedhat Single Sign-OnRedhat Integration Camel KRedhat Integration Camel QuarkusRedhat FuseRedhat Jboss Enterprise Application Platform

Weakness Type

CWE-400, CWE-401

References

https://access.redhat.com/security/cve/CVE-2021-3690
https://bugzilla.redhat.com/show_bug.cgi?id=1991299
https://github.com/undertow-io/undertow/commit/c7e84a0b7efced38506d7d1dfea590236…
https://issues.redhat.com/browse/UNDERTOW-1935
https://access.redhat.com/security/cve/CVE-2021-3690
https://bugzilla.redhat.com/show_bug.cgi?id=1991299