{ "id": "CVE-2020-14311", "sourceIdentifier": "secalert@redhat.com", "published": "2020-07-31T22:15:11.597", "lastModified": "2023-11-07T03:17:08.243", "vulnStatus": "Modified", "descriptions": [ { "lang": "en", "value": "There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow." }, { "lang": "es", "value": "Se presenta un problema con grub2 versiones anteriores a 2.06, mientras se maneja un symlink en los sistemas de archivos ext. Un sistema de archivos que contiene un enlace simb\u00f3lico con un tama\u00f1o de inode de UINT32_MAX causa un desbordamiento aritm\u00e9tico conllevando a una asignaci\u00f3n de memoria de tama\u00f1o cero con el posterior desbordamiento del b\u00fafer en la regi\u00f3n heap de la memoria" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 6.0, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 0.8, "impactScore": 5.2 }, { "source": "secalert@redhat.com", "type": "Secondary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H", "attackVector": "LOCAL", "attackComplexity": "HIGH", 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"http://www.openwall.com/lists/oss-security/2021/09/17/4", "source": "secalert@redhat.com", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "http://www.openwall.com/lists/oss-security/2021/09/21/1", "source": "secalert@redhat.com", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311", "source": "secalert@redhat.com", "tags": [ "Issue Tracking", "Third Party Advisory" ] }, { "url": "https://security.gentoo.org/glsa/202104-05", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] }, { "url": "https://usn.ubuntu.com/4432-1/", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] } ] }