Eclipse Californium denial of service (DoS) via Datagram Transport Layer Security (DTLS) handshake on parameter mismatch
In Eclipse Californium versions 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 software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.eclipse.californium:californium-core | >= 2.0.0, < 2.7.3, >= 3.0.0, < 3.6.0 | 2.7.3, 3.6.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2022-2576
- https://github.com/eclipse-californium/californium/pull/2039
- https://github.com/eclipse-californium/californium/commit/0cc953a1dc071efc960130e229fcb4f8bda7f9df
- https://github.com/eclipse-californium/californium/commit/8373db84b2d07f22c39ffc333ab881dba9401722
- https://bugs.eclipse.org/580018
- https://github.com/eclipse/californium
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-408- Platform
- Java / Kotlin (Maven)
- Package
org.eclipse.californium:californium-core- Disclosed
- 30.07.2022
- Updated
- 11.10.2026 11:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-qq3j-44gw-cf6r - CC BY 4.0
Vulnerability history: org.eclipse.californium:californium-core
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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