CVE-2021-34433

EUVD-2021-21089
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 14%
Affected Products (NVD)
VendorProductVersion
eclipsecalifornium
2.0.0 ≤
𝑥
< 2.6.5
eclipsecalifornium
3.0.0:m1
eclipsecalifornium
3.0.0:m2
eclipsecalifornium
3.0.0:m3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://bugs.eclipse.org/bugs/show_bug.cgi?id=575281
https://bugs.eclipse.org/bugs/show_bug.cgi?id=575281