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CVE-2022-39368

Californium Failing DTLS handshakes causes Data Loss due to throttling blocking processing of records

HIGH
8.2
CVSS Score
Published: November 9, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 04:58 AM UTC
2 products affected across 2 vendorsCaliforniumCalifornium

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Severity
HIGH8.2
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

Eclipse Californium is a Java implementation of RFC7252 - Constrained Application Protocol for IoT Cloud services. In versions prior to 3.7.0, and 2.7.4, Californium is vulnerable to a Denial of Service. Failing handshakes don't cleanup counters for throttling, causing the threshold to be reached without being released again. This results in permanently dropping records. The issue was reported for certificate based handshakes, but may also affect PSK based handshakes. It generally affects client and server as well. This issue is patched in version 3.7.0 and 2.7.4. There are no known workarounds. main: commit 726bac57659410da463dcf404b3e79a7312ac0b9 2.7.x: commit 5648a0c27c2c2667c98419254557a14bac2b1f3f

Affected

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

Californium· Eclipse
95%
v < 2.7.43.0.0 ≤ v < 3.7.0
Affected range stops below 2.7.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.7.0, so it looks safe — our inference, not a vendor statement
Californium· Eclipse Californium
60%
v < 2.7.4v < 3.7.0
Affected range stops below 2.7.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.7.0, so it looks safe — our inference, not a vendor statement

References (3)

PatchThird Party Advisory
Source: [email protected]
https://github.com/eclipse-californium/californium/commit/5648a0c27c2c2667c98419254557a14bac2b1f3f
PatchThird Party Advisory
Source: [email protected]
https://github.com/eclipse-californium/californium/commit/726bac57659410da463dcf404b3e79a7312ac0b9
PatchThird Party Advisory
Source: [email protected]
https://github.com/eclipse-californium/californium/security/advisories/GHSA-p72g-cgh9-ghjg

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.2HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-404CWE-459

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