gsd-2015-8370
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
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.
Aliases
Aliases
CVE-2015-8370


To clipboard 

{
  "GSD": {
    "alias": "CVE-2015-8370",
    "description": "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.",
    "id": "GSD-2015-8370",
    "references": [
      "https://www.suse.com/security/cve/CVE-2015-8370.html",
      "https://www.debian.org/security/2015/dsa-3421",
      "https://access.redhat.com/errata/RHSA-2015:2623",
      "https://ubuntu.com/security/CVE-2015-8370",
      "https://advisories.mageia.org/CVE-2015-8370.html",
      "https://linux.oracle.com/cve/CVE-2015-8370.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2015-8370"
      ],
      "details": "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.",
      "id": "GSD-2015-8370",
      "modified": "2023-12-13T01:20:03.472910Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ID": "CVE-2015-8370",
        "STATE": "PUBLIC"
      },
      "affects": {
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                    "version": {
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          }
        ]
      },
      "problemtype": {
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      "references": {
        "reference_data": [
          {
            "name": "http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html",
            "refsource": "MISC",
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          },
          {
            "name": "openSUSE-SU-2015:2392",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html"
          },
          {
            "name": "openSUSE-SU-2016:0036",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html"
          },
          {
            "name": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html",
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            "name": "[oss-security] 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]",
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            "url": "http://seclists.org/fulldisclosure/2015/Dec/69"
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          {
            "name": "GLSA-201512-03",
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            "url": "https://security.gentoo.org/glsa/201512-03"
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            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html"
          },
          {
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            "refsource": "UBUNTU",
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          },
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          },
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            "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",
            "refsource": "MLIST",
            "url": "http://www.openwall.com/lists/oss-security/2024/01/15/3"
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        ]
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    },
    "nvd.nist.gov": {
      "cve": {
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          {
            "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": "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,
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        "published": "2015-12-16T21:59:04.063",
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        "vulnStatus": "Modified",
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      }
    }
  }
}


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