CVE-2021-34433

    Dashboard / Vulnerabilities / CVE-2021-34433

    CVE-2021-34433

    Published: 20 Aug 2021Last Modified: 27 Aug 2026

    Summary:

    Details: 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.

    References: https://bugs.eclipse.org/bugs/show_bug.cgi?id=575281

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 15a27a972d7b4dd8d28d717cedfd01e6bf860e38
    Fixed -896b12c5a582787bed4dc971b0b0f675009b2401

    Affected versions

    3.0.0-m1
    3.0.0-m2
    3.0.0-m3
    3.0.0-M3
    3.0.0-M2
    3.0.0-M1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-34433 | CVE-DB