CVE-2021-34433
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductEclipse Californium
PublishedAug 20, 2021
First seenAug 20, 2021
Weakness typeCWE-322CWE-322
How to fix
Update
- eclipse californium2.6.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| eclipse californium | 2.0.0 ≤ v < 2.6.5, 3.0.0 | 2.6.5 |
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