{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2015-8370", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2024-01-16T00:06:19.101867", "dateReserved": "2015-11-27T00:00:00", "datePublished": "2015-12-16T00:00:00"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2024-01-16T00:06:19.101867"}, "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."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html"}, {"name": "openSUSE-SU-2015:2392", "tags": ["vendor-advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html"}, {"name": "openSUSE-SU-2016:0036", "tags": ["vendor-advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html"}, {"url": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html"}, {"name": "79358", "tags": ["vdb-entry"], "url": "http://www.securityfocus.com/bid/79358"}, {"name": "openSUSE-SU-2015:2375", "tags": ["vendor-advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html"}, {"name": "1034422", "tags": ["vdb-entry"], "url": "http://www.securitytracker.com/id/1034422"}, {"url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html"}, {"name": "SUSE-SU-2015:2387", "tags": ["vendor-advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html"}, {"name": "SUSE-SU-2015:2386", "tags": ["vendor-advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html"}, {"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"}, {"name": "[oss-security] 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]", "tags": ["mailing-list"], "url": "http://www.openwall.com/lists/oss-security/2015/12/15/6"}, {"name": "20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]", "tags": ["mailing-list"], "url": "http://www.securityfocus.com/archive/1/537115/100/0/threaded"}, {"name": "SUSE-SU-2015:2385", "tags": ["vendor-advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html"}, {"name": "20151216 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]", "tags": ["mailing-list"], "url": "http://seclists.org/fulldisclosure/2015/Dec/69"}, {"name": "GLSA-201512-03", "tags": ["vendor-advisory"], "url": "https://security.gentoo.org/glsa/201512-03"}, {"name": "FEDORA-2015-cebe5133e7", "tags": ["vendor-advisory"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html"}, {"name": "USN-2836-1", "tags": ["vendor-advisory"], "url": "http://www.ubuntu.com/usn/USN-2836-1"}, {"name": "FEDORA-2015-90c27b6e91", "tags": ["vendor-advisory"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html"}, {"name": "RHSA-2015:2623", "tags": ["vendor-advisory"], "url": "http://rhn.redhat.com/errata/RHSA-2015-2623.html"}, {"name": "SUSE-SU-2015:2399", "tags": ["vendor-advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html"}, {"name": "DSA-3421", "tags": ["vendor-advisory"], "url": "http://www.debian.org/security/2015/dsa-3421"}, {"name": "[oss-security] 20240116 CVE-2023-4001: a password bypass vulnerability in the downstream GRUB boot manager", "tags": ["mailing-list"], "url": "http://www.openwall.com/lists/oss-security/2024/01/15/3"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}], "datePublic": "2015-12-10T00:00:00"}}}

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"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'."}], "id": "CVE-2015-8370", "lastModified": "2024-01-16T01:15:33.947", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 6.9, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.4, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2015-12-16T21:59:04.063", "references": [{"source": "cve@mitre.org", "tags": ["Exploit"], "url": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html"}, {"source": "cve@mitre.org", "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html"}, {"source": "cve@mitre.org", "url": 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