CVE-2021-34433

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.

Categories

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory eclipse.org
Affected: The Eclipse Foundation Eclipse Californium
Published at:
Updated at:

References

Link Tags
https://bugs.eclipse.org/bugs/show_bug.cgi?id=575281 issue tracking vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-34433?
CVE-2021-34433 has been scored as a high severity vulnerability.
How to fix CVE-2021-34433?
To fix CVE-2021-34433, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-34433 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-34433 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34433?
CVE-2021-34433 affects The Eclipse Foundation Eclipse Californium.
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