Vulnerability Details CVE-2021-34433
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 14.9%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
Products affected by CVE-2021-34433
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cpe:2.3:a:eclipse:californium:2.0.0
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cpe:2.3:a:eclipse:californium:2.1.0
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cpe:2.3:a:eclipse:californium:2.2.0
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cpe:2.3:a:eclipse:californium:2.2.1
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cpe:2.3:a:eclipse:californium:2.2.2
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cpe:2.3:a:eclipse:californium:2.2.3
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cpe:2.3:a:eclipse:californium:2.3.0
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cpe:2.3:a:eclipse:californium:2.3.1
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cpe:2.3:a:eclipse:californium:2.4.0
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cpe:2.3:a:eclipse:californium:2.4.1
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cpe:2.3:a:eclipse:californium:2.5.0
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cpe:2.3:a:eclipse:californium:2.6.0
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cpe:2.3:a:eclipse:californium:2.6.1
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cpe:2.3:a:eclipse:californium:2.6.2
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cpe:2.3:a:eclipse:californium:2.6.3
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cpe:2.3:a:eclipse:californium:2.6.4
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cpe:2.3:a:eclipse:californium:3.0.0