CVE-2018-6557

{"id": "CVE-2018-6557", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.4, "accessVector": "LOCAL", "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.4, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.0, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.0}]}, "published": "2018-08-21T16:29:00.637", "references": [{"url": "http://www.securityfocus.com/bid/105148", "tags": ["Third Party Advisory", "VDB Entry"], "source": "security@ubuntu.com"}, {"url": "http://www.securitytracker.com/id/1041530", "tags": ["Broken Link", "Third Party Advisory", "VDB Entry"], "source": "security@ubuntu.com"}, {"url": "https://usn.ubuntu.com/3748-1/", "tags": ["Vendor Advisory"], "source": "security@ubuntu.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-59"}]}], "descriptions": [{"lang": "en", "value": "The MOTD update script in the base-files package in Ubuntu 18.04 LTS before 10.1ubuntu2.2, and Ubuntu 18.10 before 10.1ubuntu6 incorrectly handled temporary files. A local attacker could use this issue to cause a denial of service, or possibly escalate privileges if kernel symlink restrictions were disabled."}, {"lang": "es", "value": "El script de actualizaci\u00f3n de MOTD en el paquete de archivos base en Ubuntu 18.04 LTS en versiones anteriores a la 10.1ubuntu2.2 y Ubuntu 18.10 anteriores a la 10.1ubuntu6 manejaba incorrectamente los archivos temporales. Un atacante local podr\u00eda usar este problema para provocar una denegaci\u00f3n de servicio o posiblemente escalar privilegios si se desactivan las restricciones de enlaces simb\u00f3licos del kernel."}], "lastModified": "2023-01-18T21:22:39.193", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:base-files_project:base-files:10.1ubuntu2.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8A95C549-93EC-4A40-904F-7CFED2A94694"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "07C312A0-CD2C-4B9C-B064-6409B25C278F"}], "operator": "OR"}]}], "sourceIdentifier": "security@ubuntu.com"}