CVEvulnerability

CVE-2020-27222

7.5 HIGH Published 2021-02-03 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-02-03
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-372

Description

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.

Affected configurations

• eclipse californium (>= 2.3.0 <= 2.6.0)

Related

Weakness · CWE (1)

  • CWE-372 Incomplete Internal State Distinction weakness

References