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CVE-2022-2576 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…
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Eclipse Californium 3.5 | earliest → 3.5.0 | No fix stated |
| Eclipse Californium 3.0 | 3.0.0 → latest | No fix stated |
| Eclipse Californium 2.7 | earliest → 2.7.2 | No fix stated |
| Eclipse Californium 2.0 | 2.0.0 → latest | No fix stated |