GSD-2023-48228

Vulnerability from gsd - Updated: 2023-12-13 01:20
Details
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.
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Aliases
CVE-2023-48228
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{
  "GSD": {
    "alias": "CVE-2023-48228",
    "id": "GSD-2023-48228"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
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      "aliases": [
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      "details": "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.",
      "id": "GSD-2023-48228",
      "modified": "2023-12-13T01:20:39.670879Z",
      "schema_version": "1.4.0"
    }
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      "lastModifiedDate": "2023-11-29T02:35Z",
      "publishedDate": "2023-11-21T21:15Z"
    }
  }
}


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