CVE-2020-27222

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Summary:

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.

Reference Links(if available):

  • https://bugs.eclipse.org/bugs/show_bug.cgi?id=570844
  • CVSS Score (if available)

    v2: / MEDIUM

    v3: /

    Links to Exploits(if available)