CVE-2015-8370

{"id": "CVE-2015-8370", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.4, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.4}]}, "published": "2015-12-16T21:59:04.063", "references": [{"url": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html", "tags": ["Exploit"], "source": "cve@mitre.org"}, {"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html", "source": "cve@mitre.org"}, {"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html", "source": "cve@mitre.org"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html", "source": "cve@mitre.org"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html", "source": "cve@mitre.org"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html", "source": "cve@mitre.org"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html", "source": "cve@mitre.org"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html", "source": "cve@mitre.org"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html", "source": "cve@mitre.org"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html", "source": "cve@mitre.org"}, {"url": "http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html", "source": "cve@mitre.org"}, {"url": "http://rhn.redhat.com/errata/RHSA-2015-2623.html", "source": "cve@mitre.org"}, {"url": "http://seclists.org/fulldisclosure/2015/Dec/69", "source": "cve@mitre.org"}, {"url": "http://www.debian.org/security/2015/dsa-3421", "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2015/12/15/6", "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2024/01/15/3", "source": "cve@mitre.org"}, {"url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html", "tags": ["Patch"], "source": "cve@mitre.org"}, {"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html", "source": "cve@mitre.org"}, {"url": "http://www.securityfocus.com/archive/1/537115/100/0/threaded", "source": "cve@mitre.org"}, {"url": "http://www.securityfocus.com/bid/79358", "source": "cve@mitre.org"}, {"url": "http://www.securitytracker.com/id/1034422", "source": "cve@mitre.org"}, {"url": "http://www.ubuntu.com/usn/USN-2836-1", "source": "cve@mitre.org"}, {"url": "https://security.gentoo.org/glsa/201512-03", "source": "cve@mitre.org"}, {"url": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html", "tags": ["Exploit"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://rhn.redhat.com/errata/RHSA-2015-2623.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://seclists.org/fulldisclosure/2015/Dec/69", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.debian.org/security/2015/dsa-3421", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2015/12/15/6", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2024/01/15/3", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.securityfocus.com/archive/1/537115/100/0/threaded", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.securityfocus.com/bid/79358", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.securitytracker.com/id/1034422", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.ubuntu.com/usn/USN-2836-1", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://security.gentoo.org/glsa/201512-03", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-264"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-191"}]}], "descriptions": [{"lang": "en", "value": "Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (disk corruption) via backspace characters in the (1) grub_username_get function in grub-core/normal/auth.c or the (2) grub_password_get function in lib/crypto.c, which trigger an \"Off-by-two\" or \"Out of bounds overwrite\" memory error."}, {"lang": "es", "value": "M\u00faltiple desbordamiento inferior de entero en Grub2 1.98 hasta la versi\u00f3n 2.02 permite a atacantes f\u00edsicamente pr\u00f3ximos eludir la autenticaci\u00f3n, obtener informaci\u00f3n sensible o causar una denegaci\u00f3n de servicio (corrupci\u00f3n de disco) a trav\u00e9s del car\u00e1cter backspace en la funci\u00f3n (1) grub_username_get en grub-core/normal/auth.c o (2) grub_password_get en lib/crypto.c, lo que desencadena un error de memoria 'Off-by-two' o 'Out of bounds overwrite'."}], "lastModified": "2025-04-12T10:46:40.837", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:gnu:grub2:1.98:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "936B2F89-3A97-46A8-B776-CF605C192CA2"}, {"criteria": "cpe:2.3:a:gnu:grub2:1.99:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6FB62F6A-8B42-4186-99AF-2A07050EB19E"}, {"criteria": "cpe:2.3:a:gnu:grub2:2.00:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D3AB3BF3-95F2-43C6-8445-4B749135BE8E"}, {"criteria": "cpe:2.3:a:gnu:grub2:2.01:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F3C7F246-9B64-49C4-B358-C5A62C3A2458"}, {"criteria": "cpe:2.3:a:gnu:grub2:2.02:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7AEB4A3C-A448-4C7D-8F08-57940E13BB6D"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E79AB8DD-C907-4038-A931-1A5A4CFB6A5B"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}