GHSA-rpj2-w6fr-79hc

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    GHSA-rpj2-w6fr-79hc

    Published: 24 Aug 2022Last Modified: 30 Jun 2025

    Summary: Keycloak vulnerable to Improper Certificate Validation

    Details: keycloak accepts an expired certificate by the direct-grant authenticator because of missing time stamp validations. The highest threat from this vulnerability is to data confidentiality and integrity. This issue was partially fixed in version [13.0.1](https://github.com/keycloak/keycloak/pull/6330) and more completely fixed in version [14.0.0](https://github.com/keycloak/keycloak/pull/8067).

    References: https://nvd.nist.gov/vuln/detail/CVE-2020-35509, https://github.com/keycloak/keycloak/pull/6330, https://github.com/keycloak/keycloak/pull/8067, https://github.com/keycloak/keycloak/commit/478319348bdfdb9b6d39122f41edf2af79f679bb, https://access.redhat.com/security/cve/cve-2020-35509, https://bugzilla.redhat.com/show_bug.cgi?id=1912427, https://github.com/keycloak/keycloak, https://github.com/keycloak/keycloak/blob/4f330f4a57cbfcf6202b60546518261c66e59a35/services/src/main/java/org/keycloak/authentication/authenticators/x509/ValidateX509CertificateUsername.java#L74-L76

    Affected packages

    Package

    Name: org.keycloak:keycloak-core

    Purl: pkg:maven/org.keycloak/keycloak-core

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -14.0.0

    Affected versions

    1.0-alpha-1

    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
    GHSA-rpj2-w6fr-79hc | CVE-DB