{
  "id": "CVE-2023-48228",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2023-11-21T21:15:08.477",
  "lastModified": "2023-11-29T02:35:26.887",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "authentik is an open-source identity provider. When initialising a oauth2 flow with a `code_challenge` and `code_method` (thus requesting PKCE), the single sign-on provider (authentik) must check if there is a matching and existing `code_verifier` during the token step. Prior to versions 2023.10.4 and 2023.8.5, authentik checks if the contents of `code_verifier` is matching only when it is provided. When it is left out completely, authentik simply accepts the token request with out it; even when the flow was started with a `code_challenge`. authentik 2023.8.5 and 2023.10.4 fix this issue."
    },
    {
      "lang": "es",
      "value": "authentik es un proveedor de identidad de c\u00f3digo abierto. Al inicializar un flujo oauth2 con un `code_challenge` y un `code_method` (solicitando as\u00ed PKCE), el proveedor de inicio de sesi\u00f3n \u00fanico (authentik) debe verificar si hay un `code_verifier` coincidente y existente durante el paso del token. Antes de las versiones 2023.10.4 y 2023.8.5, authentik verifica si el contenido de `code_verifier` coincide solo cuando se proporciona. Cuando se omite por completo, authentik simplemente acepta la solicitud del token sin \u00e9l; incluso cuando el flujo se inici\u00f3 con un \"code_challenge\". authentik 2023.8.5 y 2023.10.4 solucionan este problema."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      },
      {
        "source": "security-advisories@github.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "security-advisories@github.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "2023.8.5",
              "matchCriteriaId": "EDAD4E86-B0E7-4863-B8B4-D3B85DF1F9B3"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "2023.10.0",
              "versionEndExcluding": "2023.10.4",
              "matchCriteriaId": "94DFCEE9-DE60-4890-8F11-D2EFDB0565D5"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/goauthentik/authentik/blob/dd4e9030b4e667d3720be2feda24c08972602274/authentik/providers/oauth2/views/token.py#L225",
      "source": "security-advisories@github.com",
      "tags": [
        "Product"
      ]
    },
    {
      "url": "https://github.com/goauthentik/authentik/commit/3af77ab3821fe9c7df8055ba5eade3d1ecea03a6",
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/goauthentik/authentik/commit/6b9afed21f7c39f171a4a445654cfe415bba37d5",
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/goauthentik/authentik/commit/b88e39411c12e3f9e04125a7887f12354f760a14",
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/goauthentik/authentik/pull/7666",
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/goauthentik/authentik/pull/7668",
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/goauthentik/authentik/pull/7669",
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/goauthentik/authentik/releases/tag/version%2F2023.10.4",
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/goauthentik/authentik/releases/tag/version%2F2023.8.5",
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/goauthentik/authentik/security/advisories/GHSA-fm34-v8xq-f2c3",
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ]
    }
  ]
}