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CaliforniumApplication · Eclipse

CVE-2022-39368

HIGH · 8.2 CVSS v3.1 Published 2022-11-10
Fix available
A fix is available. Upgrade to 2.7.4 / 3.7.0 or later.
See remediation →
91/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
CaliforniumApplication
Affected:< 2.7.4>= 3.0.0, < 3.7.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 2.7.4 / 3.7.0 or later
Fixed in 2.7.43.7.0
Vendor patch github.com →
Recommended fix High confidence

Californium 2.7.4 (for 2.x branch) or 3.7.0 (for 3.x branch)

  1. 1. Identify current Californium version in use (check pom.xml, build.gradle, or dependency management)
  2. 2. If using 2.x branch (< 2.7.4): upgrade to version 2.7.4
  3. 3. If using 3.x branch (>= 3.0.0 and < 3.7.0): upgrade to version 3.7.0
  4. 4. Update dependency version in build configuration (Maven pom.xml or Gradle build.gradle)
  5. 5. Rebuild the application with the new dependency version
  6. 6. Test the application to verify the fix resolves the DoS vulnerability and that functionality remains intact
  7. 7. Deploy the updated application

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,950. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-39368 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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