CVE-2023-41050

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Python's \"format\" functionality allows someone controlling the format string to \"read\" objects accessible (recursively) via attribute access and subscription from accessible objects. Those attribute accesses and subscriptions use Python's full blown `getattr` and `getitem`, not the policy restricted `AccessControl` variants `_getattr_` and `_getitem_`. This can lead to critical information disclosure. `AccessControl` already provides a safe variant for `str.format` and denies access to `string.Formatter`. However, `str.format_map` is still unsafe. Affected are all users who allow untrusted users to create `AccessControl` controlled Python code and execute it. A fix has been introduced in versions 4.4, 5.8 and 6.2. Users are advised to upgrade. There are no known workarounds for this vulnerability."}, {"lang": "es", "value": "AccessControl proporciona un marco de seguridad general para su uso en Zope. La funcionalidad \"format\" de Python permite que alguien que controle la cadena de formato \"lea\" objetos accesibles (recursivamente) mediante acceso a atributos y suscripci\u00f3n desde objetos accesibles. Esos accesos a atributos y suscripciones utilizan las variantes `getattr` y `getitem` completas de Python, no las variantes `_getattr_` y `_getitem_` restringidas por pol\u00edticas de `AccessControl`. Esto puede conducir a la divulgaci\u00f3n de informaci\u00f3n cr\u00edtica. `AccessControl` ya proporciona una variante segura para `str.format` y niega el acceso a `string.Formatter`. Sin embargo, `str.format_map` todav\u00eda no es seguro. Los afectados son todos los usuarios que permiten a usuarios no confiables crear c\u00f3digo Python controlado por `AccessControl` y ejecutarlo. Se ha introducido una soluci\u00f3n en las versiones 4.4, 5.8 y 6.2. Se recomienda a los usuarios que actualicen. No se conocen workarounds para esta vulnerabilidad."}], "id": "CVE-2023-41050", "lastModified": "2026-06-17T06:20:18.200", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 4.0, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-41050", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-26T14:47:49.544178Z", "version": "2.0.3"}}]}, "published": "2023-09-06T18:15:08.847", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/zopefoundation/AccessControl/commit/6bc32692e0d4b8d5cf64eae3d19de987c7375bc9"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/zopefoundation/AccessControl/security/advisories/GHSA-8xv7-89vj-q48c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/zopefoundation/AccessControl/commit/6bc32692e0d4b8d5cf64eae3d19de987c7375bc9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://github.com/zopefoundation/AccessControl/security/advisories/GHSA-8xv7-89vj-q48c"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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