CVE-2021-1492

{"id": "CVE-2021-1492", "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": "ykramarz@cisco.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.6, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 1.3}]}, "published": "2021-03-25T15:15:12.950", "references": [{"url": "https://help.duo.com/s/article/6789", "tags": ["Vendor Advisory"], "source": "ykramarz@cisco.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "ykramarz@cisco.com", "description": [{"lang": "en", "value": "CWE-64"}]}], "descriptions": [{"lang": "en", "value": "The Duo Authentication Proxy installer prior to 5.2.1 did not properly validate file installation paths. This allows an attacker with local user privileges to coerce the installer to write to arbitrary privileged directories. If successful, an attacker can manipulate files used by Duo Authentication Proxy installer, cause Denial of Service (DoS) by deleting file(s), or replace system files to potentially achieve elevation of privileges. This is only exploitable during new installations, while the installer is running, and is not exploitable once installation has finished. Versions 5.2.1 of Duo Authentication Proxy installer addresses this issue."}, {"lang": "es", "value": "El instalador de Duo Authentication Proxy anterior a versi\u00f3n 5.2.1, no comprobaba apropiadamente las rutas de instalaci\u00f3n de archivos. Esto permite a un atacante con privilegios de usuario local coaccionar al instalador para que escriba en directorios privilegiados arbitrarios. Si tiene \u00e9xito, un atacante puede manipular los archivos usados por el instalador de Duo Authentication Proxy, causar una denegaci\u00f3n de servicio (DoS) al eliminar archivos o reemplazar archivos del sistema para lograr potencialmente una elevaci\u00f3n de privilegios. Esto solo se puede explotar durante nuevas instalaciones, mientras el instalador se est\u00e1 ejecutando, y no es explotable una vez finalizada la instalaci\u00f3n. Las versiones 5.2.1 del instalador de Duo Authentication Proxy solucionan este problema"}], "lastModified": "2021-03-27T03:29:38.427", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:duo:authentication_proxy:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E727A4EF-FB58-4E1F-B565-0E85ADFEE035", "versionEndExcluding": "5.2.1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "ykramarz@cisco.com"}