CVE-2020-27222
First published: Wed Feb 03 2021(Updated: )
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.
Credit: emo@eclipse.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Eclipse Californium | >=2.3.0<=2.6.0 |
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Reference Links
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=570844
- https://access.redhat.com/errata/RHSA-2021:3205
- https://access.redhat.com/errata/RHSA-2021:3207
- https://access.redhat.com/security/cve/cve-2020-27222
- https://bugzilla.redhat.com/show_bug.cgi?id=1930230
- https://www.cve.org/CVERecord?id=CVE-2020-27222 https://nvd.nist.gov/vuln/detail/CVE-2020-27222
Frequently Asked Questions
What is CVE-2020-27222?
CVE-2020-27222 is a vulnerability found in Eclipse Californium versions 2.3.0 to 2.6.0.
How does CVE-2020-27222 impact the affected software?
CVE-2020-27222 can cause certificate-based DTLS handshakes to fail in Eclipse Californium, leading to potential security issues.
What is the severity of CVE-2020-27222?
CVE-2020-27222 has a severity rating of high with a CVSS score of 7.5.
How can I fix CVE-2020-27222?
To fix CVE-2020-27222, upgrade to Eclipse Californium version 2.6.1 or later.
Where can I find more information about CVE-2020-27222?
You can find more information about CVE-2020-27222 on the CVE website (https://www.cve.org/CVERecord?id=CVE-2020-27222) and the NVD website (https://nvd.nist.gov/vuln/detail/CVE-2020-27222).
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