GHSA-3QH5-QQJ2-C78F

Vulnerability from github – Published: 2023-06-30 20:31 – Updated: 2023-06-30 20:31
VLAI?
Summary
Keycloak vulnerable to Improper Client Certificate Validation for OAuth/OpenID clients
Details

When a Keycloak server is configured to support mTLS authentication for OAuth/OpenID clients, it does not properly verify the client certificate chain. A client that possesses a proper certificate can authorize itself as any other client and therefore access data that belongs to other clients.

Severity ?
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.keycloak:keycloak-services"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "21.1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-2422"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-06-30T20:31:37Z",
    "nvd_published_at": "2023-10-04T11:15:10Z",
    "severity": "HIGH"
  },
  "details": "When a Keycloak server is configured to support mTLS authentication for OAuth/OpenID clients, it does not properly verify the client certificate chain. A client that possesses a proper certificate can authorize itself as any other client and therefore access data that belongs to other clients.",
  "id": "GHSA-3qh5-qqj2-c78f",
  "modified": "2023-06-30T20:31:37Z",
  "published": "2023-06-30T20:31:37Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-3qh5-qqj2-c78f"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2422"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/commit/5c6c55945a384bfd82e51283096204dcb6f63d91"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2023:3883"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2023:3884"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2023:3885"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2023:3888"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2023:3892"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2023-2422"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2191668"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/keycloak/keycloak"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Keycloak vulnerable to Improper Client Certificate Validation for OAuth/OpenID clients"
}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.