{ "id": "CVE-2016-6197", "sourceIdentifier": "cve@mitre.org", "published": "2016-08-06T20:59:12.067", "lastModified": "2019-12-27T16:08:47.953", "vulnStatus": "Modified", "descriptions": [ { "lang": "en", "value": "fs/overlayfs/dir.c in the OverlayFS filesystem implementation in the Linux kernel before 4.6 does not properly verify the upper dentry before proceeding with unlink and rename system-call processing, which allows local users to cause a denial of service (system crash) via a rename system call that specifies a self-hardlink." }, { "lang": "es", "value": "fs/overlayfs/dir.c en la implementaci\u00f3n del sistema de archivos OverlayFS en el kernel de Linux en versiones anteriores a 4.6 no verifica adecuadamente la dentry superior antes de proceder con el procesamiento de desconexi\u00f3n y cambio de nombre de llamadas al sistema, lo que permite a usuarios locales provocar una denegaci\u00f3n del servicio (ca\u00edda de sistema) a trav\u00e9s de una llamada al sistema cambiada de nombre que especifica un self-hardlink." } ], "metrics": { "cvssMetricV30": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.0", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 1.8, "impactScore": 3.6 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "accessVector": "LOCAL", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 4.9 }, "baseSeverity": "MEDIUM", "exploitabilityScore": 3.9, "impactScore": 6.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-20" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*", "matchCriteriaId": "CC7A498A-A669-4C42-8134-86103C799D13" } ] } ] }, { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndIncluding": "4.5.7", "matchCriteriaId": "02606D90-EB6B-45DE-B022-6E5783BD64FA" } ] } ] }, { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*", "matchCriteriaId": "4BA58099-26F7-4B01-B9FC-275F012FE9C6" } ] } ] } ], "references": [ { "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=11f3710417d026ea2f4fcf362d866342c5274185", "source": "cve@mitre.org", "tags": [ "Issue Tracking", "Patch" ] }, { "url": "http://rhn.redhat.com/errata/RHSA-2016-1847.html", "source": "cve@mitre.org" }, { "url": "http://rhn.redhat.com/errata/RHSA-2016-1875.html", "source": "cve@mitre.org" }, { "url": "http://www.openwall.com/lists/oss-security/2016/07/11/8", "source": "cve@mitre.org", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] }, { "url": "http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html", "source": "cve@mitre.org", "tags": [ "Vendor Advisory" ] }, { "url": "http://www.securityfocus.com/bid/91709", "source": "cve@mitre.org" }, { "url": "http://www.securitytracker.com/id/1036273", "source": "cve@mitre.org" }, { "url": "http://www.ubuntu.com/usn/USN-3070-1", "source": "cve@mitre.org" }, { "url": "http://www.ubuntu.com/usn/USN-3070-2", "source": "cve@mitre.org" }, { "url": "http://www.ubuntu.com/usn/USN-3070-3", "source": "cve@mitre.org" }, { "url": "http://www.ubuntu.com/usn/USN-3070-4", "source": "cve@mitre.org" }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1355650", "source": "cve@mitre.org", "tags": [ "Issue Tracking" ] }, { "url": "https://github.com/torvalds/linux/commit/11f3710417d026ea2f4fcf362d866342c5274185", "source": "cve@mitre.org", "tags": [ "Issue Tracking", "Patch" ] } ] }