Signature Validation Bypass Affecting org.eclipse.californium:scandium package, versions [2.0.0,2.6.5)[3.0.0-M1,3.0.0-M4)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.08% (36th percentile)

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  • Snyk IDSNYK-JAVA-ORGECLIPSECALIFORNIUM-1568503
  • published22 Aug 2021
  • disclosed22 Aug 2021
  • creditAchim Kraus

Introduced: 22 Aug 2021

CVE-2021-34433  (opens in a new tab)
CWE-322  (opens in a new tab)

How to fix?

Upgrade org.eclipse.californium:scandium to version 2.6.5, 3.0.0-M4 or higher.

Overview

org.eclipse.californium:scandium is a library for exchanging data using DTLS over UDP.

Affected versions of this package are vulnerable to Signature Validation Bypass. If the signature is not included in ServerKeyExchange, then the certificate based (x509 and RPK) DTLS handshakes succeeds without verifying the server side's signature on the client side.

CVSS Scores

version 3.1