FKIE_CVE-2016-9382

Vulnerability from fkie_nvd - Published: 2017-01-23 21:59 - Updated: 2025-04-20 01:37
Severity ?
7.8 (High) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Xen 4.0.x through 4.7.x mishandle x86 task switches to VM86 mode, which allows local 32-bit x86 HVM guest OS users to gain privileges or cause a denial of service (guest OS crash) by leveraging a guest operating system that uses hardware task switching and allows a new task to start in VM86 mode.
References
cve@mitre.orghttp://www.securityfocus.com/bid/94470Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securitytracker.com/id/1037341Third Party Advisory, VDB Entry
cve@mitre.orghttp://xenbits.xen.org/xsa/advisory-192.htmlPatch, Vendor Advisory
cve@mitre.orghttps://security.gentoo.org/glsa/201612-56
cve@mitre.orghttps://support.citrix.com/article/CTX218775Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/94470Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1037341Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://xenbits.xen.org/xsa/advisory-192.htmlPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201612-56
af854a3a-2127-422b-91ae-364da2661108https://support.citrix.com/article/CTX218775Patch, Third Party Advisory
Impacted products
Vendor Product Version
xen xen 4.0.0
xen xen 4.0.1
xen xen 4.0.2
xen xen 4.0.3
xen xen 4.0.4
xen xen 4.1.0
xen xen 4.1.1
xen xen 4.1.2
xen xen 4.1.3
xen xen 4.1.4
xen xen 4.1.5
xen xen 4.1.6.1
xen xen 4.2.0
xen xen 4.2.1
xen xen 4.2.2
xen xen 4.2.3
xen xen 4.2.4
xen xen 4.2.5
xen xen 4.3.0
xen xen 4.3.1
xen xen 4.3.2
xen xen 4.3.3
xen xen 4.3.4
xen xen 4.4.0
xen xen 4.4.1
xen xen 4.4.2
xen xen 4.4.3
xen xen 4.4.4
xen xen 4.5.0
xen xen 4.5.1
xen xen 4.5.2
xen xen 4.5.3
xen xen 4.5.5
xen xen 4.6.0
xen xen 4.6.1
xen xen 4.6.3
xen xen 4.6.4
xen xen 4.7.0
xen xen 4.7.1
citrix xenserver 6.0.2
citrix xenserver 6.2.0
citrix xenserver 6.5
citrix xenserver 7.0
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Xen 4.0.x through 4.7.x mishandle x86 task switches to VM86 mode, which allows local 32-bit x86 HVM guest OS users to gain privileges or cause a denial of service (guest OS crash) by leveraging a guest operating system that uses hardware task switching and allows a new task to start in VM86 mode."
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    }
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  "id": "CVE-2016-9382",
  "lastModified": "2025-04-20T01:37:25.860",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
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          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.6,
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          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
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        "impactScore": 6.4,
        "obtainAllPrivilege": false,
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        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2017-01-23T21:59:02.830",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
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      "url": "http://www.securityfocus.com/bid/94470"
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    {
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.