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CVE-2016-9637

Estado: ModificadaAlta (7.5)—

The (1) ioport_read and (2) ioport_write functions in Xen, when qemu is used as a device model within Xen, might allow local x86 HVM guest OS administrators to gain qemu process privileges via vectors involving an out-of-range ioport access.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Citrix — Xenserver

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2016-9637",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.7,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:H/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "HIGH",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 1.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.0",
          "baseScore": 7.5,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 0.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-02-17T02:59:13.967",
  "references": [
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2016-2963.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/94699",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securitytracker.com/id/1037397",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://xenbits.xen.org/xsa/advisory-199.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://security.gentoo.org/glsa/201612-56",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://support.citrix.com/article/CTX219136",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2016-2963.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/94699",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1037397",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://xenbits.xen.org/xsa/advisory-199.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.gentoo.org/glsa/201612-56",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://support.citrix.com/article/CTX219136",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The (1) ioport_read and (2) ioport_write functions in Xen, when qemu is used as a device model within Xen, might allow local x86 HVM guest OS administrators to gain qemu process privileges via vectors involving an out-of-range ioport access."
    },
    {
      "lang": "es",
      "value": "Las funciones (1) ioport_read y (2) ioport_write en Xen, cuando qemu es utilizado como un modelo de dispositivo dentro de Xen, podría permitir a administradores locales del SO invitado x86 HVM obtener privilegios del proceso qemu a través de vectores que involucran un acceso ioport fuera de rango."
    }
  ],
  "lastModified": "2026-06-17T00:56:22.030",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:citrix:xenserver:6.0.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5FCF191B-971A-4945-AB14-08091689BE2F"
            },
            {
              "criteria": "cpe:2.3:a:citrix:xenserver:6.2.0:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "878949E0-D656-4E0E-858A-C6AD948A2A2F"
            },
            {
              "criteria": "cpe:2.3:a:citrix:xenserver:6.5:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DBCF6643-ACDE-4DDB-8B01-D952DDF8951E"
            },
            {
              "criteria": "cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "405F950F-0772-41A3-8B72-B67151CC1376"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}