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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The Eclipse Foundation | Eclipse Californium | 2.0.0 – < unspecified, unspecified – ≤ 2.7.2, 3.0.0 – < unspecified, unspecified – ≤ 3.5.0 | unspecified |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.eclipse.californium:californium-core | >= 2.0.0, < 2.7.3 | 2.7.3 | GHSA-qq3j-44gw-cf6r |
| Maven | org.eclipse.californium:californium-core | >= 3.0.0, < 3.6.0 | 3.6.0 | GHSA-qq3j-44gw-cf6r |