{"id":"CVE-2022-2576","aliases":["GHSA-qq3j-44gw-cf6r"],"url":"https://o3.security/vulnerability/CVE-2022-2576","summary":"Eclipse Californium denial of service (DoS) via Datagram Transport Layer Security (DTLS) handshake on parameter mismatch","details":"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.","published":"2022-07-29T13:20:10Z","modified":"2026-08-27T03:48:41.491448933Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Maven","name":"org.eclipse.californium:californium-core","fixedVersion":"2.7.3"},{"ecosystem":"Maven","name":"org.eclipse.californium:californium-core","fixedVersion":"3.6.0"}],"fix":{"url":"https://github.com/eclipse-californium/californium/pull/2039","label":"eclipse-californium/californium#2039"},"references":[{"type":"WEB","url":"https://bugs.eclipse.org/580018"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/2xxx/CVE-2022-2576.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-2576"},{"type":"WEB","url":"https://github.com/eclipse-californium/californium/pull/2039"},{"type":"WEB","url":"https://github.com/eclipse-californium/californium/commit/0cc953a1dc071efc960130e229fcb4f8bda7f9df"},{"type":"WEB","url":"https://github.com/eclipse-californium/californium/commit/8373db84b2d07f22c39ffc333ab881dba9401722"},{"type":"PACKAGE","url":"https://github.com/eclipse/californium"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T03:48:41.491448933Z"}}