Eclipse Californium: Incorrect Behavior Order: Early Amplification
CVE-2022-2576 is a high-severity incorrect behavior order: early amplification vulnerability in Eclipse Californium from Eclipse Foundation, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Eclipse Californium versions: 2.0.0; 2.7.2 and earlier; 3.0.0, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.61% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Eclipse Californium you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on bugs.eclipse.org for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| The Eclipse Foundation | Eclipse Californium | 2.0.0; 2.7.2 and earlier; 3.0.0; 3.5.0 and earlier | Not stated |
| Eclipse | Californium | 2.0.0 through 2.7.2; 3.0.0 through 3.5.0 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by NVD.
Official description
In Eclipse Californium version 2.0.0 to 2.7.2 and 3.0.0-3.5.0 a DTLS resumption handshake falls back to a DTLS full handshake on a parameter mismatch without using a HelloVerifyRequest. Especially, if used with certificate based cipher suites, that results in message amplification (DDoS other peers) and high CPU load (DoS own peer). The misbehavior occurs only with DTLS_VERIFY_PEERS_ON_RESUMPTION_THRESHOLD values larger than 0.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Incorrect Behavior Order: Early Amplification
The product allows an entity to perform a legitimate but expensive operation before authentication or authorization has taken place.
More Incorrect Behavior Order: Early Amplification vulnerabilities (CWE-408)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Advisories
- bugs.eclipse.org/580018Exploit, Issue Tracking
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