CVE-2023-46232

{"id": "CVE-2023-46232", "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:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "security-advisories@github.com", "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:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "published": "2023-10-25T22:15:09.477", "references": [{"url": "https://github.com/matter-labs/era-compiler-vyper/commit/8be305a1b9c68d0fd47dad3434224ed85944ca25", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/matter-labs/era-compiler-vyper/security/advisories/GHSA-h8jv-969m-94r4", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/matter-labs/era-system-contracts/blob/main/contracts/ImmutableSimulator.sol#L37", "tags": ["Product"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}, {"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-471"}]}], "descriptions": [{"lang": "en", "value": "era-compiler-vyper is the EraVM Vyper compiler for zkSync Era, a layer 2 rollup that uses zero-knowledge proofs to scale Ethereum. Prior to era-compiler-vype version 1.3.10, a bug prevented the initialization of the first immutable variable for Vyper contracts meeting certain criteria. The problem arises when there is a String or Array with more 256-bit words allocated than initialized. It results in the second word\u2019s index unset, that is effectively set to 0, so the first immutable value with the actual 0 index is overwritten in the ImmutableSimulator. Version 1.3.10 fixes this issue by setting all indexes in advance. The problem will go away, but it will get more expensive if the user allocates a lot of uninitialized space, e.g. `String[4096]`. Upgrading and redeploying affected contracts is the only way of working around the issue.\n"}, {"lang": "es", "value": "era-compiler-vyper es el compilador EraVM Vyper para zkSync Era, un paquete acumulativo de capa 2 que utiliza pruebas de conocimiento cero para escalar Ethereum. Antes de la versi\u00f3n 1.3.10 de era-compiler-vype, un error imped\u00eda la inicializaci\u00f3n de la primera variable inmutable para los contratos de Vyper que cumpl\u00edan ciertos criterios. El problema surge cuando hay un String o Array con m\u00e1s palabras de 256 bits asignadas que inicializadas. Esto da como resultado que el \u00edndice de la segunda palabra no est\u00e9 configurado, que efectivamente se establece en 0, por lo que el primer valor inmutable con el \u00edndice 0 real se sobrescribe en ImmutableSimulator. La versi\u00f3n 1.3.10 soluciona este problema configurando todos los \u00edndices por adelantado. El problema desaparecer\u00e1, pero ser\u00e1 m\u00e1s costoso si el usuario asigna una gran cantidad de espacio no inicializado, por ejemplo, `String[4096]`. Actualizar y redistribuir los contratos afectados es la \u00fanica forma de solucionar el problema."}], "lastModified": "2023-11-06T16:52:55.210", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:matter-labs:zkvyper:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E7C9B8B4-113C-405C-8961-D90E30AF0A3A", "versionEndExcluding": "1.3.10"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}