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.
Remediation
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/c7e84a0b7efced38506d7d1dfea5902366973877
https://issues.redhat.com/browse/UNDERTOW-1935
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