{
  "id": "CVE-2019-14284",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2019-07-26T13:15:13.113",
  "lastModified": "2019-08-11T23:15:12.970",
  "vulnStatus": "Modified",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel before 5.2.3, drivers/block/floppy.c allows a denial of service by setup_format_params division-by-zero. Two consecutive ioctls can trigger the bug: the first one should set the drive geometry with .sect and .rate values that make F_SECT_PER_TRACK be zero. Next, the floppy format operation should be called. It can be triggered by an unprivileged local user even when a floppy disk has not been inserted. NOTE: QEMU creates the floppy device by default."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux anterior a versi\u00f3n 5.2.3, el archivo drivers/block/floppy.c, permite una denegaci\u00f3n de servicio mediante la divisi\u00f3n por cero de la funci\u00f3n setup_format_params. Dos ioctls consecutivos pueden desencadenar el error: el primero debe establecer la geometr\u00eda de la unidad con valores .sect y .rate que hacen que F_SECT_PER_TRACK sea cero. A continuaci\u00f3n, se debe llamar a la operaci\u00f3n de formato de disquete. Puede ser activado por un usuario local sin privilegios incluso cuando no se ha insertado un disquete. NOTA: QEMU crea el dispositivo de disquete de por defecto."
    }
  ],
  "metrics": {
    "cvssMetricV30": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.0",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 6.2,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
          "accessVector": "LOCAL",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 2.1
        },
        "baseSeverity": "LOW",
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-369"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "5.2.3",
              "matchCriteriaId": "38844317-DEDF-4600-BA0E-C7D28D8EC200"
            }
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  ],
  "references": [
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00055.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00056.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.3",
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f3554aeb991214cbfafd17d55e2bfddb50282e32",
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://github.com/torvalds/linux/commit/f3554aeb991214cbfafd17d55e2bfddb50282e32",
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://seclists.org/bugtraq/2019/Aug/13",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://seclists.org/bugtraq/2019/Aug/18",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://seclists.org/bugtraq/2019/Aug/26",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20190905-0002/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://usn.ubuntu.com/4114-1/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://usn.ubuntu.com/4115-1/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://usn.ubuntu.com/4116-1/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://usn.ubuntu.com/4117-1/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://usn.ubuntu.com/4118-1/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.debian.org/security/2019/dsa-4495",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.debian.org/security/2019/dsa-4497",
      "source": "cve@mitre.org"
    }
  ]
}