CVE-2020-27222

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Source

https://cve.org/CVERecord?id=CVE-2020-27222

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-27222.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2020-27222

Published

2021-02-03T16:15:13Z

Modified

2026-10-24T10:30:39Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

[none]

Details

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.

References

https://bugs.eclipse.org/bugs/show_bug.cgi?id=570844

Affected packages

Git / github.com/eclipse-californium/californium

Affected ranges

Type

GIT

Repo

https://github.com/eclipse-californium/californium

Events

Introduced

ced7ef98f325b62a1d23011e0bc67b1bdd662293

Last Affected

864c58f817e2d2a403c6a7bf54e75fbc5c408dbe

Database specific

Show details

{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:eclipse:californium:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "2.3.0"
                },
                {
                    "last_affected":  "2.6.0"
                }
            ],
            "source":  "CPE_RANGE"
        }
    ]
}

Affected versions

2.*

2.3.0

2.4.0

2.5.0

2.6.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-27222.json"