In Eclipse Californium version 2.0.0 to 2.7.2 and 3.0.0-3.5.0 a DTLS resumption handshake falls back to a DTLS full handshake on a parameter mismatch without using a HelloVerifyRequest. Especially, if used with certificate based cipher suites, that results in message amplification (DDoS other peers) and high CPU load (DoS own peer). The misbehavior occurs only with DTLS_VERIFY_PEERS_ON_RESUMPTION_THRESHOLD values larger than 0.
References
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published: 2022-07-29T13:20:10

Updated: 2024-08-03T00:39:08.153Z

Reserved: 2022-07-29T00:00:00

Link: CVE-2022-2576

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2022-07-29T14:15:08.177

Modified: 2022-08-05T16:13:48.700

Link: CVE-2022-2576

cve-icon Redhat

No data.