FKIE_CVE-2018-19962

Vulnerability from fkie_nvd - Published: 2018-12-08 04:29 - Updated: 2024-11-21 03:58
Severity ?
7.8 (High) - CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because small IOMMU mappings are unsafely combined into larger ones.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
cve@mitre.orghttp://www.securityfocus.com/bid/106182Third Party Advisory, VDB Entry
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2019/10/msg00008.html
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
cve@mitre.orghttps://support.citrix.com/article/CTX239432Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2019/dsa-4369Third Party Advisory
cve@mitre.orghttps://xenbits.xen.org/xsa/advisory-275.htmlPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/106182Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2019/10/msg00008.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
af854a3a-2127-422b-91ae-364da2661108https://support.citrix.com/article/CTX239432Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2019/dsa-4369Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://xenbits.xen.org/xsa/advisory-275.htmlPatch, Vendor Advisory
Impacted products
Vendor Product Version
xen xen *
debian debian_linux 9.0
citrix xenserver 7.0
citrix xenserver 7.1
citrix xenserver 7.5
citrix xenserver 7.6
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EA6D0834-FE53-4844-A6C7-0BB2DC64DBA3",
              "versionEndIncluding": "4.11.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "405F950F-0772-41A3-8B72-B67151CC1376",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:xenserver:7.1:cu1:*:*:ltsr:*:*:*",
              "matchCriteriaId": "93BE83D6-26D9-46E0-B031-27A03A83537A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:xenserver:7.5:*:*:*:*:*:*:*",
              "matchCriteriaId": "49D662D7-33DF-4DB3-946E-E9E410DC96CF",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:xenserver:7.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "1077F43A-22AA-436E-97ED-51CF74E92BA2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because small IOMMU mappings are unsafely combined into larger ones."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en Xen hasta las versiones 4.11.x en plataformas AMD x86, que podr\u00eda permitir que usuarios invitados del sistema operativo obtengan privilegios del host del sistema operativo. Esto se debe a que los mapeos de IOMMU peque\u00f1os se combinan de forma insegura con mapeos m\u00e1s grandes."
    }
  ],
  "id": "CVE-2018-19962",
  "lastModified": "2024-11-21T03:58:53.687",
  "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,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 1.1,
        "impactScore": 6.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2018-12-08T04:29:00.297",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/106182"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00008.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://support.citrix.com/article/CTX239432"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
      "url": "https://www.debian.org/security/2019/dsa-4369"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://xenbits.xen.org/xsa/advisory-275.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/106182"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00008.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://support.citrix.com/article/CTX239432"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2019/dsa-4369"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://xenbits.xen.org/xsa/advisory-275.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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