{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-42806", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2023-09-14T16:13:33.307Z", "datePublished": "2023-09-21T16:45:34.742Z", "dateUpdated": "2024-08-02T19:30:24.694Z"}, "containers": {"cna": {"title": "Snapshot signature not including HeadID will allow replay attacks", "problemTypes": [{"descriptions": [{"cweId": "CWE-347", "lang": "en", "description": "CWE-347: Improper Verification of Cryptographic Signature", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq"}, {"name": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/HeadLogic.hs#L357", "tags": ["x_refsource_MISC"], "url": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/HeadLogic.hs#L357"}, {"name": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/Snapshot.hs#L50-L54", "tags": ["x_refsource_MISC"], "url": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/Snapshot.hs#L50-L54"}, {"name": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-plutus/src/Hydra/Contract/Head.hs#L583-L599", "tags": ["x_refsource_MISC"], "url": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-plutus/src/Hydra/Contract/Head.hs#L583-L599"}], "affected": [{"vendor": "input-output-hk", "product": "hydra", "versions": [{"version": "< 0.13.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2023-09-21T16:45:34.742Z"}, "descriptions": [{"lang": "en", "value": "Hydra is the layer-two scalability solution for Cardano. Prior to version 0.13.0, not signing and verifying `$\\mathsf{cid}$` allows an attacker (which must be a participant of this head) to use a snapshot from an old head instance with the same participants to close the head or contest the state with it. This can lead to an incorrect distribution of value (= value extraction attack; hard, but possible) or prevent the head to finalize because the value available is not consistent with the closed utxo state (= denial of service; easy). A patch is planned for version 0.13.0. As a workaround, rotate keys between heads so not to re-use keys and not result in the same multi-signature participants."}], "source": {"advisory": "GHSA-gr36-mc6v-72qq", "discovery": "UNKNOWN"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T19:30:24.694Z"}, "title": "CVE Program Container", "references": [{"name": "https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq", "tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq"}, {"name": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/HeadLogic.hs#L357", "tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/HeadLogic.hs#L357"}, {"name": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/Snapshot.hs#L50-L54", "tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/Snapshot.hs#L50-L54"}, {"name": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-plutus/src/Hydra/Contract/Head.hs#L583-L599", "tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-plutus/src/Hydra/Contract/Head.hs#L583-L599"}]}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:iohk:hydra:*:*:*:*:*:*:*:*", "matchCriteriaId": "556BF21B-9F61-4C1D-BD51-A2EC64EA1CE7", "versionEndExcluding": "0.13.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Hydra is the layer-two scalability solution for Cardano. Prior to version 0.13.0, not signing and verifying `$\\mathsf{cid}$` allows an attacker (which must be a participant of this head) to use a snapshot from an old head instance with the same participants to close the head or contest the state with it. This can lead to an incorrect distribution of value (= value extraction attack; hard, but possible) or prevent the head to finalize because the value available is not consistent with the closed utxo state (= denial of service; easy). A patch is planned for version 0.13.0. As a workaround, rotate keys between heads so not to re-use keys and not result in the same multi-signature participants."}, {"lang": "es", "value": " Hydra es the layer-two scalability solution para Cardano. Antes de la versi\u00f3n 0.13.0, no firmar ni verificar `$\\mathsf{cid}$` permite que un atacante (que debe ser un participante de este encabezado) use una instant\u00e1nea de una instancia principal anterior con los mismos participantes para cerrar el encabezado o disputar al Estado. Esto puede llevar a una distribuci\u00f3n incorrecta del valor (= ataque de extracci\u00f3n de valor; dif\u00edcil, pero posible) o impedir que la cabeza finalice porque el valor disponible no es consistente con el estado utxo cerrado (= denegaci\u00f3n de servicio; f\u00e1cil). Est\u00e1 previsto un parche para la versi\u00f3n 0.13.0. Como workaround, rote las claves entre los cabezales para no reutilizarlas y no generar los mismos participantes con firmas m\u00faltiples."}], "id": "CVE-2023-42806", "lastModified": "2023-09-26T14:41:00.217", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2023-09-21T17:15:23.583", "references": [{"source": "security-advisories@github.com", "tags": ["Product"], "url": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/HeadLogic.hs#L357"}, {"source": "security-advisories@github.com", "tags": ["Product"], "url": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/Snapshot.hs#L50-L54"}, {"source": "security-advisories@github.com", "tags": ["Product"], "url": "https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-plutus/src/Hydra/Contract/Head.hs#L583-L599"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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