CVE-2020-15703

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{"affected": [{"affectedData": [{"product": "aptdaemon", "vendor": "Canonical", "versions": [{"lessThan": "1.1.1+bzr982-0ubuntu32.2", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThan": "1.1.1+bzr982-0ubuntu19.4", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThan": "1.1.1+bzr982-0ubuntu14.4", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@ubuntu.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:aptdaemon_project:aptdaemon:1.1.1:bzr982-0ubuntu14.4:*:*:*:*:*:*", "matchCriteriaId": "CD6DE0CC-4F88-42BF-A72A-285B1E02D1D2", "vulnerable": true}, {"criteria": "cpe:2.3:a:aptdaemon_project:aptdaemon:1.1.1:bzr982-0ubuntu19.4:*:*:*:*:*:*", "matchCriteriaId": "7AA256EC-5D30-4629-A9B4-933576FECAEC", "vulnerable": true}, {"criteria": "cpe:2.3:a:aptdaemon_project:aptdaemon:1.1.1:bzr982-0ubuntu32.2:*:*:*:*:*:*", "matchCriteriaId": "CA6A232F-6616-4CE6-8B3A-D47509844E4B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "There is no input validation on the Locale property in an apt transaction. An unprivileged user can supply a full path to a writable directory, which lets aptd read a file as root. Having a symlink in place results in an error message if the file exists, and no error otherwise. This way an unprivileged user can check for the existence of any files on the system as root."}, {"lang": "es", "value": "No se presenta una validaci\u00f3n de entrada en la propiedad Locale en una transacci\u00f3n apt. Un usuario no privilegiado puede proporcionar una ruta completa a un directorio de escritura, lo que permite a aptd leer un archivo como root. Tener un enlace simb\u00f3lico en el lugar resulta en un mensaje de error si el archivo existe, y de no hay error en caso contrario. De esta manera, un usuario no privilegiado puede comprobar la existencia de cualquier archivo en el sistema como root"}], "id": "CVE-2020-15703", "lastModified": "2026-06-17T02:57:05.010", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.1, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 1.4, "source": "security@ubuntu.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-10-31T04:15:10.897", "references": [{"source": "security@ubuntu.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://ubuntu.com/security/notices/USN-4537-1"}, {"source": "security@ubuntu.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://www.eyecontrol.nl/blog/the-story-of-3-cves-in-ubuntu-desktop.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://ubuntu.com/security/notices/USN-4537-1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://www.eyecontrol.nl/blog/the-story-of-3-cves-in-ubuntu-desktop.html"}], "sourceIdentifier": "security@ubuntu.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security@ubuntu.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-22"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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