HSEC-2024-0009 (CVE-2024-41949)

Vulnerability from osv_haskell – Published: 2025-11-14 14:45 – Updated: 2025-11-14 14:45 – Source website

Summary

Public key confusion in third-party blocks

Details

Public key confusion in third-party blocks

Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a ThirdPartyBlock request can be sent, providing only the necessary info to generate a third-party block and to sign it:

the public key of the previous block (used in the signature);
the public keys part of the token symbol table (for public key interning in datalog expressions).

A third-party block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair.

References

URL

Type

	https://github.com/biscuit-auth/biscuit-haskell/s…	ADVISORY
	https://github.com/biscuit-auth/biscuit-haskell/pull/93	FIX

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "human_link": "https://github.com/haskell/security-advisories/tree/main/advisories/published/2024/HSEC-2024-0009.md",
        "osv": "https://raw.githubusercontent.com/haskell/security-advisories/refs/heads/generated/osv-export/2024/HSEC-2024-0009.json"
      },
      "package": {
        "ecosystem": "Hackage",
        "name": "biscuit-haskell"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.3.0.0"
            },
            {
              "fixed": "0.4.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-41949",
    "GHSA-rgqv-mwc3-c78m",
    "GHSA-47cq-pc2v-3rmp"
  ],
  "database_specific": {
    "home": "https://github.com/haskell/security-advisories",
    "osvs": "https://raw.githubusercontent.com/haskell/security-advisories/refs/heads/generated/osv-export",
    "repository": "https://github.com/haskell/security-advisories"
  },
  "details": "# Public key confusion in third-party blocks\n\nThird-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a `ThirdPartyBlock` request can be sent, providing only the necessary info to generate a third-party block and to sign it:\n\n- the public key of the previous block (used in the signature);\n- the public keys part of the token symbol table (for public key interning in datalog expressions).\n\nA third-party block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair.\n",
  "id": "HSEC-2024-0009",
  "modified": "2025-11-14T14:45:34Z",
  "published": "2025-11-14T14:45:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/biscuit-auth/biscuit-haskell/security/advisories/GHSA-47cq-pc2v-3rmp"
    },
    {
      "type": "FIX",
      "url": "https://github.com/biscuit-auth/biscuit-haskell/pull/93"
    }
  ],
  "schema_version": "1.5.0",
  "summary": "Public key confusion in third-party blocks"
}

CVE-2024-41949 (GCVE-0-2024-41949)

Vulnerability from cvelistv5 – Published: 2024-08-01 22:03 – Updated: 2024-08-02 14:49

Title

biscuit-rust vulnerable to public key confusion in third party block

Summary

biscuit-rust is the Rust implementation of Biscuit, an authentication and authorization token for microservices architectures. Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a ThirdPartyBlock request can be sent, providing only the necessary info to generate a third-party block and to sign it, which includes the public key of the previous block (used in the signature) and the public keys part of the token symbol table (for public key interning in datalog expressions). A third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair.

Severity

3 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-08-02 14:49 UTC

CWE

CWE-269 - Improper Privilege Management

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/biscuit-auth/biscuit-rust/secu…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
biscuit-auth	biscuit-rust	Affected: < 5.0.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-41949",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-02T14:49:36.289064Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-08-02T14:49:52.914Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "biscuit-rust",
          "vendor": "biscuit-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 5.0.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "biscuit-rust is the Rust implementation of Biscuit, an authentication and authorization token for microservices architectures. Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a ThirdPartyBlock request can be sent, providing only the necessary info to generate a third-party block and to sign it, which includes the public key of the previous block (used in the signature) and the public keys part of the token symbol table (for public key interning in datalog expressions). A third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269: Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-08-01T22:03:11.198Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/biscuit-auth/biscuit-rust/security/advisories/GHSA-p9w4-585h-g3c7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/biscuit-auth/biscuit-rust/security/advisories/GHSA-p9w4-585h-g3c7"
        }
      ],
      "source": {
        "advisory": "GHSA-p9w4-585h-g3c7",
        "discovery": "UNKNOWN"
      },
      "title": "biscuit-rust vulnerable to public key confusion in third party block"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-41949",
    "datePublished": "2024-08-01T22:03:11.198Z",
    "dateReserved": "2024-07-24T16:51:40.948Z",
    "dateUpdated": "2024-08-02T14:49:52.914Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

HSEC-2024-0009 (CVE-2024-41949)

Public key confusion in third-party blocks

CVE-2024-41949 (GCVE-0-2024-41949)

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