FKIE_CVE-2018-19961

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 TLB flushes do not always occur after IOMMU mapping changes.
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": [
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              "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 TLB flushes do not always occur after IOMMU mapping changes."
    },
    {
      "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 vaciados TLB no siempre ocurren tras cambios en el mapeo de IOMMU."
    }
  ],
  "id": "CVE-2018-19961",
  "lastModified": "2024-11-21T03:58:53.530",
  "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": "2018-12-08T04:29:00.247",
  "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": [
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      ],
      "url": "https://support.citrix.com/article/CTX239432"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      "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": [
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      ],
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    },
    {
      "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-459"
        }
      ],
      "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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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