CVE-2021-36286

{"id": "CVE-2021-36286", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 3.6, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "LOW", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 1.8}, {"type": "Secondary", "source": "security_alert@emc.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 1.8}]}, "published": "2021-09-28T20:15:07.727", "references": [{"url": "https://www.dell.com/support/kbdoc/en-us/000191057/dsa-2021-163-dell-supportassist-client-consumer-security-update-for-two-vulnerabilities", "tags": ["Patch", "Vendor Advisory"], "source": "security_alert@emc.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-59"}]}, {"type": "Secondary", "source": "security_alert@emc.com", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "Dell SupportAssist Client Consumer versions 3.9.13.0 and any versions prior to 3.9.13.0 contain an arbitrary file deletion vulnerability that can be exploited by using the Windows feature of NTFS called Symbolic links. Symbolic links can be created by any(non-privileged) user under some object directories, but by themselves are not sufficient to successfully escalate privileges. However, combining them with a different object, such as the NTFS junction point allows for the exploitation. Support assist clean files functionality do not distinguish junction points from the physical folder and proceeds to clean the target of the junction that allows nonprivileged users to create junction points and delete arbitrary files on the system which can be accessed only by the admin."}, {"lang": "es", "value": "Dell SupportAssist Client Consumer versiones 3.9.13.0 y todas las versiones anteriores a 3.9.13.0, contienen una vulnerabilidad de eliminaci\u00f3n de archivos arbitrarios que puede ser explotada al usar la funci\u00f3n de Windows de NTFS denominada enlaces Simb\u00f3licos. Los enlaces Simb\u00f3licos pueden ser creados por cualquier usuario (no privilegiados) bajo algunos directorios de objetos, pero por s\u00ed mismos no son suficientes para escalar los privilegios con \u00e9xito. Sin embargo, combinarlos con un objeto diferente, como el punto de uni\u00f3n NTFS permite una explotaci\u00f3n. La funcionalidad Support assist clean files no distingue los puntos de uni\u00f3n de la carpeta f\u00edsica y procede a limpiar el objetivo de la uni\u00f3n que permite a usuarios no privilegiados crear puntos de uni\u00f3n y eliminar archivos arbitrarios en el sistema a los que s\u00f3lo puede acceder el administrador"}], "lastModified": "2022-10-25T14:56:21.220", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:dell:supportassist_client_consumer:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A420F797-8AF8-4B9A-8B42-0605BE40A63E", "versionEndIncluding": "3.9.13.0"}], "operator": "OR"}]}], "sourceIdentifier": "security_alert@emc.com"}