fkie_cve-2015-8370
Vulnerability from fkie_nvd
Published
2015-12-16 21:59
Modified
2025-04-12 10:46
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
cve@mitre.orghttp://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.htmlExploit
cve@mitre.orghttp://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html
cve@mitre.orghttp://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html
cve@mitre.orghttp://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html
cve@mitre.orghttp://rhn.redhat.com/errata/RHSA-2015-2623.html
cve@mitre.orghttp://seclists.org/fulldisclosure/2015/Dec/69
cve@mitre.orghttp://www.debian.org/security/2015/dsa-3421
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2015/12/15/6
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2024/01/15/3
cve@mitre.orghttp://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlPatch
cve@mitre.orghttp://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
cve@mitre.orghttp://www.securityfocus.com/archive/1/537115/100/0/threaded
cve@mitre.orghttp://www.securityfocus.com/bid/79358
cve@mitre.orghttp://www.securitytracker.com/id/1034422
cve@mitre.orghttp://www.ubuntu.com/usn/USN-2836-1
cve@mitre.orghttps://security.gentoo.org/glsa/201512-03
af854a3a-2127-422b-91ae-364da2661108http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.htmlExploit
af854a3a-2127-422b-91ae-364da2661108http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html
af854a3a-2127-422b-91ae-364da2661108http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html
af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2015-2623.html
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2015/Dec/69
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2015/dsa-3421
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2015/12/15/6
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/01/15/3
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlPatch
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/537115/100/0/threaded
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/79358
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1034422
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2836-1
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201512-03
Impacted products
Vendor Product Version
gnu grub2 1.98
gnu grub2 1.99
gnu grub2 2.00
gnu grub2 2.01
gnu grub2 2.02
fedoraproject fedora 23



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  "cveTags": [],
  "descriptions": [
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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."
    },
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      "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",
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        "obtainAllPrivilege": false,
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  "published": "2015-12-16T21:59:04.063",
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-191"
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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