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
2021-02-03T16:15:13.117Z
Modified
2026-03-14T10:07:04.836971Z
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

Affected packages

Git / github.com/eclipse/californium

Affected ranges

Type
GIT
Repo
https://github.com/eclipse/californium
Events
Introduced
ced7ef98f325b62a1d23011e0bc67b1bdd662293
Last affected
864c58f817e2d2a403c6a7bf54e75fbc5c408dbe
Database specific 
{
    "versions": [
        {
            "introduced": "2.3.0"
        },
        {
            "last_affected": "2.6.0"
        }
    ]
}

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"