ghsa-rpj2-w6fr-79hc
Vulnerability from github
Published
2022-08-24 00:00
Modified
2025-06-30 21:46
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
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 and more completely fixed in version 14.0.0.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.keycloak:keycloak-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "14.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-35509"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-295"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-12-05T23:03:56Z",
    "nvd_published_at": "2022-08-23T16:15:00Z",
    "severity": "MODERATE"
  },
  "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.\n\nThis 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).",
  "id": "GHSA-rpj2-w6fr-79hc",
  "modified": "2025-06-30T21:46:07Z",
  "published": "2022-08-24T00:00:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-35509"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/pull/6330"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/pull/8067"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/commit/478319348bdfdb9b6d39122f41edf2af79f679bb"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/cve-2020-35509"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1912427"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/keycloak/keycloak"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/blob/4f330f4a57cbfcf6202b60546518261c66e59a35/services/src/main/java/org/keycloak/authentication/authenticators/x509/ValidateX509CertificateUsername.java#L74-L76"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Keycloak vulnerable to Improper Certificate Validation"
}


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