DTLS Vulnerability in Eclipse Californium Affects Multiple Versions

CVE-2022-2576

What is CVE-2022-2576?

The Eclipse Californium product versions 2.0.0 to 3.5.0 are affected by a vulnerability wherein a DTLS resumption handshake not correctly handled defaults to a complete DTLS handshake due to a parameter mismatch. This leads to situations where, particularly in certificate-based cipher suites, message amplification can occur, leading to potential denial of service (DoS) conditions impacting the affected peer due to high CPU load. The misbehavior is triggered under specific configurations where DTLS_VERIFY_PEERS_ON_RESUMPTION_THRESHOLD values exceed zero. This poses a significant risk in network environments utilizing these versions.

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