fkie_cve-2015-8370
Vulnerability from fkie_nvd
Published
2015-12-16 21:59
Modified
2025-04-12 10:46
Severity ?
Summary
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.
References
Impacted products
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"cveTags": [], "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 \u0027Off-by-two\u0027 o \u0027Out of bounds overwrite\u0027." } ], "id": "CVE-2015-8370", "lastModified": "2025-04-12T10:46:40.837", "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 } ], "cvssMetricV31": [ { "cvssData": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "exploitabilityScore": 1.4, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary" } ] }, "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": "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", "tags": [ "Patch" ], "url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html" }, { "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": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Exploit" ], "url": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html" }, { "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", "tags": [ "Patch" ], "url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html" }, { "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" } ], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-264" } ], "source": "nvd@nist.gov", "type": "Primary" }, { "description": [ { "lang": "en", "value": "CWE-191" } ], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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