CVE-2017-18078

{"id": "CVE-2017-18078", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.6, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "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": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2018-01-29T05:29:00.213", "references": [{"url": "http://lists.opensuse.org/opensuse-updates/2018-02/msg00109.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://packetstormsecurity.com/files/146184/systemd-Local-Privilege-Escalation.html", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2018/01/29/3", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/systemd/systemd/issues/7736", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E", "source": "cve@mitre.org"}, {"url": "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E", "source": "cve@mitre.org"}, {"url": "https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.exploit-db.com/exploits/43935/", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "https://www.openwall.com/lists/oss-security/2018/01/29/4", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://lists.opensuse.org/opensuse-updates/2018-02/msg00109.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://packetstormsecurity.com/files/146184/systemd-Local-Privilege-Escalation.html", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2018/01/29/3", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/systemd/systemd/issues/7736", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.exploit-db.com/exploits/43935/", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.openwall.com/lists/oss-security/2018/01/29/4", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-59"}]}], "descriptions": [{"lang": "en", "value": "systemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned off, which allows local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacks write access, as demonstrated by changing the ownership of the /etc/passwd file."}, {"lang": "es", "value": "systemd-tmpfiles en systemd en versiones anteriores a la 237 intenta soportar cambios de propiedad/permisos en archivos con v\u00ednculos permanentes incluso aunque el sysctl fs.protected_hardlinks est\u00e9 apagado. Esto permite que usuarios locales omitan las restricciones de acceso planeadas mediante vectores relacionados con un enlace permanente a un archivo para el que el usuario no tiene acceso de escritura, tal y como demuestra el cambio de propiedad del archivo /etc/passwd."}], "lastModified": "2024-11-21T03:19:18.847", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8FFE2618-BA1B-4FAB-8449-83CAAFCDCFAA", "versionEndExcluding": "237"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5F65DAB0-3DAD-49FF-BC73-3581CC3D5BF3"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}