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CVE-2020-27222

HIGH
7.5
CVSS Score
Published: February 3, 2021 at 03:45 PM UTC
Updated: June 17, 2026 at 03:08 AM UTC
1 product affected across 1 vendorCalifornium

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Severity
HIGH7.5
Exploit prediction
EPSS 0.9%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Californium· Eclipse
95%
2.3.0 ≤ v ≤ 2.6.0[2.3.0, 2.6.0]

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMPermissions RequiredVendor Advisory
Source: [email protected]
https://bugs.eclipse.org/bugs/show_bug.cgi?id=570844

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-372NVD-CWE-Other

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