In Eclipse Californium version 2.3.0 to 2.6.0, the certificate based (x509 and RPK) DTLS handshakes accidentally fails, because the DTLS server side sticks to a wrong internal state. That wrong internal state is set by a previous certificate based DTLS handshake failure with TLS parameter mismatch. The DTLS server side must be restarted to recover this. This allow clients to force a DoS.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published: 2021-02-03T15:45:13

Updated: 2024-08-04T16:11:36.000Z

Reserved: 2020-10-19T00:00:00

Link: CVE-2020-27222

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-02-03T16:15:13.117

Modified: 2024-11-21T05:20:53.557

Link: CVE-2020-27222

cve-icon Redhat

Severity : Important

Publid Date: 2021-02-03T00:00:00Z

Links: CVE-2020-27222 - Bugzilla