CVE-2021-34433
Last modified
CVE-2021-34433 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In Eclipse Californium version 2.0.0 to 2.6.4 and 3.0.0-M1 to 3.0.0-M3, the certificate based (x509 and RPK) DTLS handshakes accidentally succeeds without verifying the server side's signature on the client side, if that signature is not included in the server's ServerKeyExchange.. EPSS estimates a 0.34% chance of exploitation in the next 30 days.
Description
In Eclipse Californium version 2.0.0 to 2.6.4 and 3.0.0-M1 to 3.0.0-M3, the certificate based (x509 and RPK) DTLS handshakes accidentally succeeds without verifying the server side's signature on the client side, if that signature is not included in the server's ServerKeyExchange.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Eclipse | Californium | >= 2.0.0, < 2.6.5 | — |
| Eclipse | Californium | 3.0.0 | M1 |
References
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=575281Issue Tracking, Vendor Advisory
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=575281Issue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-34433?
How severe is CVE-2021-34433?
How do I fix CVE-2021-34433?
How Strix Helps
- Same Subject, Wrong User: A Cross-Issuer Account Takeover in n8nStrix found an identity-binding bug in n8n's token-exchange flow enabling account takeover.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-34428For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, …3.5
- CVE-2021-34429For Eclipse Jetty versions 9.4.37-9.4.42, 10.0.1-10.0.5 & 11…5.3
- CVE-2021-3443A NULL pointer dereference flaw was found in the way Jasper …5.5
- CVE-2021-34430Eclipse TinyDTLS through 0.9-rc1 relies on the rand function…7.5
- CVE-2021-34431In Eclipse Mosquitto version 1.6 to 2.0.10, if an authentica…6.5
- CVE-2021-34432In Eclipse Mosquitto versions 2.0.7 and earlier, the server …7.5
- CVE-2021-34434In Eclipse Mosquitto versions 2.0 to 2.0.11, when using the …5.3
- CVE-2021-34435In Eclipse Theia 0.3.9 to 1.8.1, the "mini-browser" extensio…8.8
- CVE-2021-34436In Eclipse Theia 0.1.1 to 0.2.0, it is possible to exploit t…9.8
- CVE-2021-34438Windows Font Driver Host Remote Code Execution Vulnerability7.8
- CVE-2021-34439Microsoft Windows Media Foundation Remote Code Execution Vul…7.8
- CVE-2021-3444The bpf verifier in the Linux kernel did not properly handle…7.8
Are you affected by CVE-2021-34433?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST