CVE-2024-24560

{"id": "CVE-2024-24560", "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.7, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 2.2}]}, "published": "2024-02-02T17:15:11.720", "references": [{"url": "https://github.com/vyperlang/vyper/security/advisories/GHSA-gp3w-2v2m-p686", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-119"}]}], "descriptions": [{"lang": "en", "value": "Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine. When calls to external contracts are made, we write the input buffer starting at byte 28, and allocate the return buffer to start at byte 0 (overlapping with the input buffer). When checking RETURNDATASIZE for dynamic types, the size is compared only to the minimum allowed size for that type, and not to the returned value's length. As a result, malformed return data can cause the contract to mistake data from the input buffer for returndata. When the called contract returns invalid ABIv2 encoded data, the calling contract can read different invalid data (from the dirty buffer) than the called contract returned."}, {"lang": "es", "value": "Vyper es un lenguaje de contrato inteligente pit\u00f3nico para la m\u00e1quina virtual Ethereum. Cuando se realizan llamadas a contratos externos, escribimos el b\u00fafer de entrada comenzando en el byte 28 y asignamos el b\u00fafer de retorno para que comience en el byte 0 (superponi\u00e9ndose con el b\u00fafer de entrada). Al verificar RETURNDATASIZE para tipos din\u00e1micos, el tama\u00f1o se compara solo con el tama\u00f1o m\u00ednimo permitido para ese tipo y no con la longitud del valor devuelto. Como resultado, los datos de devoluci\u00f3n con formato incorrecto pueden hacer que el contrato confunda los datos del b\u00fafer de entrada con los datos de devoluci\u00f3n. Cuando el contrato llamado devuelve datos codificados ABIv2 no v\u00e1lidos, el contrato que llama puede leer datos no v\u00e1lidos diferentes (del b\u00fafer sucio) que los devueltos por el contrato llamado."}], "lastModified": "2024-02-12T15:23:42.867", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:python:*:*", "vulnerable": true, "matchCriteriaId": "832C489D-4288-46B4-A29E-0E7168748042", "versionEndIncluding": "0.3.10"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}