FKIE_CVE-2015-8550

Vulnerability from fkie_nvd - Published: 2016-04-14 14:59 - Updated: 2026-06-17 00:34
Summary
Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.htmlThird Party Advisory
cve@mitre.orghttp://www.debian.org/security/2016/dsa-3434
cve@mitre.orghttp://www.debian.org/security/2016/dsa-3471
cve@mitre.orghttp://www.debian.org/security/2016/dsa-3519
cve@mitre.orghttp://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
cve@mitre.orghttp://www.securityfocus.com/bid/79592Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securitytracker.com/id/1034479Third Party Advisory, VDB Entry
cve@mitre.orghttp://xenbits.xen.org/xsa/advisory-155.htmlVendor Advisory
cve@mitre.orghttps://security.gentoo.org/glsa/201604-03
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2016/dsa-3434
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2016/dsa-3471
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2016/dsa-3519
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/79592Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1034479Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://xenbits.xen.org/xsa/advisory-155.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201604-03
Impacted products

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "BFA1950D-1D9F-4401-AA86-CF3028EFD286",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:novell:suse_linux_enterprise_real_time_extension:12:sp1:*:*:*:*:*:*",
              "matchCriteriaId": "5AB3CAA1-C20C-4A86-841E-EC0858164D7D",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability."
    },
    {
      "lang": "es",
      "value": "Xen, cuando se utiliza en un sistema que proporciona backends PV, permite a administradores locales del SO invitado causar una denegaci\u00f3n de servicio (ca\u00edda de SO anfitri\u00f3n) o la obtenci\u00f3n de privilegios escribiendo en la memoria compartida por el frontend y el backend, tambi\u00e9n conocida como una vulnerabilidad de doble recuperaci\u00f3n."
    }
  ],
  "id": "CVE-2015-8550",
  "lastModified": "2026-06-17T00:34:45.193",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": true,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "SINGLE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 5.7,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 8.5,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 1.5,
        "impactScore": 6.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2016-04-14T14:59:04.347",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.debian.org/security/2016/dsa-3434"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.debian.org/security/2016/dsa-3471"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.debian.org/security/2016/dsa-3519"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/79592"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securitytracker.com/id/1034479"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://xenbits.xen.org/xsa/advisory-155.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://security.gentoo.org/glsa/201604-03"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2016/dsa-3434"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2016/dsa-3471"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2016/dsa-3519"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/79592"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securitytracker.com/id/1034479"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://xenbits.xen.org/xsa/advisory-155.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.gentoo.org/glsa/201604-03"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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