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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:python:*:*", "matchCriteriaId": "34B59539-E37F-462A-BB24-D952D027FAC5", "versionEndExcluding": "0.3.10", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine (EVM). In version 0.3.9 and prior, under certain conditions, the memory used by the builtins `raw_call`, `create_from_blueprint` and `create_copy_of` can be corrupted. For `raw_call`, the argument buffer of the call can be corrupted, leading to incorrect `calldata` in the sub-context. For `create_from_blueprint` and `create_copy_of`, the buffer for the to-be-deployed bytecode can be corrupted, leading to deploying incorrect bytecode.\n\nEach builtin has conditions that must be fulfilled for the corruption to happen. 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As a workaround, the complex expressions that are being passed as kwargs to the builtin should be cached in memory prior to the call to the builtin."}, {"lang": "es", "value": "Vyper es un Lenguaje de Contrato Inteligente Pit\u00f3nico para la M\u00e1quina Virtual Ethereum (EVM). En la versi\u00f3n 0.3.9 y anteriores, bajo ciertas condiciones, la memoria utilizada por las funciones integradas `raw_call`, `create_from_blueprint` y `create_copy_of` puede estar da\u00f1ada. Para `raw_call`, el b\u00fafer de argumentos de la llamada puede estar da\u00f1ado, lo que genera `calldata` incorrectos en el subcontexto. Para `create_from_blueprint` y `create_copy_of`, el b\u00fafer para el c\u00f3digo de bytes que se va a implementar puede estar da\u00f1ado, lo que lleva a implementar un c\u00f3digo de bytes incorrecto. Cada elemento incorporado tiene condiciones que deben cumplirse para que se produzca la corrupci\u00f3n. Para `raw_call`, el argumento `data` del incorporado debe ser `msg.data` y el `valor` o `gas` pasado al incorporado debe ser alguna expresi\u00f3n compleja que d\u00e9 como resultado la escritura en la memoria. Para `create_copy_of`, el `valor` o `salt` pasado al incorporado debe ser alguna expresi\u00f3n compleja que d\u00e9 como resultado la escritura en la memoria. Para `create_from_blueprint`, no se deben pasar par\u00e1metros de constructor al incorporado o `raw_args` debe establecerse en True, y el `valor` o `salt` pasado al incorporado debe ser alguna expresi\u00f3n compleja que d\u00e9 como resultado la escritura en la memoria . Al momento de la publicaci\u00f3n, no existe ninguna versi\u00f3n parcheada. El problema a\u00fan se est\u00e1 investigando y es posible que haya otros casos en los que se produzca corrupci\u00f3n. Cuando se llama a la funci\u00f3n incorporada desde una funci\u00f3n \"interna\" \"F\", el problema no est\u00e1 presente siempre que la funci\u00f3n que llama a \"F\" haya escrito en la memoria antes de llamar a \"F\". Como workaround, las expresiones complejas que se pasan como kwargs al incorporado deben almacenarse en cach\u00e9 en la memoria antes de la llamada al incorporado."}], "id": "CVE-2023-42443", "lastModified": "2023-09-22T14:30:04.887", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2023-09-18T21:16:13.403", "references": [{"source": "security-advisories@github.com", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://github.com/vyperlang/vyper/issues/3609"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://github.com/vyperlang/vyper/security/advisories/GHSA-c647-pxm2-c52w"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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