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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:rarlab:winrar:*:*:*:*:*:*:*:*", "matchCriteriaId": "7EA0C7CE-99E6-4C92-AE89-6C6A8DF92126", "versionEndIncluding": "5.61", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In WinRAR versions prior to and including 5.61, there is path traversal vulnerability when crafting the filename field of the ACE format. The UNACE module (UNACEV2.dll) creates files and folders as written in the filename field even when WinRAR validator noticed the traversal attempt and requestd to abort the extraction process. the operation is cancelled only after the folders and files were created but prior to them being written, therefore allowing the attacker to create empty files and folders everywhere in the file system."}, {"lang": "es", "value": "En WinRAR, en versiones anteriores e incluyendo a la 5.61, hay una vulnerabilidad de salto de directorio al manipular el campo \"filename\" del formato ACE. El m\u00f3dulo UNACE (UNACEV2.dll) crea archivos y carpetas tal y como est\u00e1n escritos en el campo \"filename\", incluso cuando el validador de WinRAR descubr\u00eda el intento de salto y solicitaba abortar el proceso de extracci\u00f3n. La operaci\u00f3n se cancelaba solo tras crear las carpetas y archivos, pero antes de que se escribiesen, permitiendo as\u00ed que el atacante cree archivos y carpetas vac\u00edos en cualquier lugar del sistema de archivos."}], "id": "CVE-2018-20251", "lastModified": "2019-10-09T23:39:36.197", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-02-05T20:29:00.273", "references": [{"source": "cve@checkpoint.com", "tags": ["VDB Entry", "Third Party Advisory"], "url": "http://www.securityfocus.com/bid/106948"}, {"source": "cve@checkpoint.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://research.checkpoint.com/extracting-code-execution-from-winrar/"}, {"source": "cve@checkpoint.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.win-rar.com/whatsnew.html"}], "sourceIdentifier": "cve@checkpoint.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-693"}], "source": "cve@checkpoint.com", "type": "Secondary"}]}

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