FKIE_CVE-2018-5244

Vulnerability from fkie_nvd - Published: 2018-01-05 18:29 - Updated: 2024-11-21 04:08
Severity ?
6.5 (Medium) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Summary
In Xen 4.10, new infrastructure was introduced as part of an overhaul to how MSR emulation happens for guests. Unfortunately, one tracking structure isn't freed when a vcpu is destroyed. This allows guest OS administrators to cause a denial of service (host OS memory consumption) by rebooting many times.
References
cve@mitre.orghttp://www.securityfocus.com/bid/102433Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securitytracker.com/id/1040774
cve@mitre.orghttps://security.gentoo.org/glsa/201810-06
cve@mitre.orghttps://xenbits.xen.org/xsa/advisory-253.htmlIssue Tracking, Mitigation, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/102433Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1040774
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201810-06
af854a3a-2127-422b-91ae-364da2661108https://xenbits.xen.org/xsa/advisory-253.htmlIssue Tracking, Mitigation, Vendor Advisory
Impacted products
Vendor Product Version
xen xen *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E0060574-66EE-413D-9C6B-197AF1164EC9",
              "versionStartIncluding": "4.10.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Xen 4.10, new infrastructure was introduced as part of an overhaul to how MSR emulation happens for guests. Unfortunately, one tracking structure isn\u0027t freed when a vcpu is destroyed. This allows guest OS administrators to cause a denial of service (host OS memory consumption) by rebooting many times."
    },
    {
      "lang": "es",
      "value": "En Xen 4.10, se introdujo una nueva infraestructura como parte de una revisi\u00f3n de c\u00f3mo ocurre la emulaci\u00f3n MSR para los invitados. Desafortunadamente, no se libera una estructura de rastreo cuando se destruye una vcpu. Esto permite que administradores invitados del sistema operativo provoquen una denegaci\u00f3n de servicio (consumo de memoria del sistema operativo del host) reiniciando muchas veces."
    }
  ],
  "id": "CVE-2018-5244",
  "lastModified": "2024-11-21T04:08:24.847",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 4.9,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 4.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2018-01-05T18:29:00.247",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/102433"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.securitytracker.com/id/1040774"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://security.gentoo.org/glsa/201810-06"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://xenbits.xen.org/xsa/advisory-253.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "VDB Entry"
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      "url": "http://www.securityfocus.com/bid/102433"
    },
    {
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      "url": "http://www.securitytracker.com/id/1040774"
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.gentoo.org/glsa/201810-06"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://xenbits.xen.org/xsa/advisory-253.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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