CVE-2012-3495 (GCVE-0-2012-3495)

Vulnerability from cvelistv5 – Published: 2012-11-23 20:00 – Updated: 2024-08-06 20:05
VLAI
Summary
The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
URL Tags
http://secunia.com/advisories/55082 third-party-advisoryx_refsource_SECUNIA
http://xenbits.xen.org/hg/xen-4.1-testing.hg/rev/… x_refsource_CONFIRM
http://lists.xen.org/archives/html/xen-announce/2… mailing-listx_refsource_MLIST
http://secunia.com/advisories/51413 third-party-advisoryx_refsource_SECUNIA
http://security.gentoo.org/glsa/glsa-201309-24.xml vendor-advisoryx_refsource_GENTOO
http://wiki.xen.org/wiki/Security_Announcements#X… x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://www.securityfocus.com/bid/55406 vdb-entryx_refsource_BID
http://www.securitytracker.com/id?1027480 vdb-entryx_refsource_SECTRACK
https://security.gentoo.org/glsa/201604-03 vendor-advisoryx_refsource_GENTOO
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://support.citrix.com/article/CTX134708 x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2012/09/05/6 mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
Date Public
2012-09-05 00:00
Show details on NVD website
To clipboard 

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      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "24FCA867-7158-459C-9D6C-75A39263F00A",
                    "versionEndIncluding": "6.0.2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:citrix:xenserver:5.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "57F938EB-46B0-4D82-98D3-1FCB22C02F8E",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:citrix:xenserver:5.5:*:*:*:*:*:*:*",
                    "matchCriteriaId": "642BB495-D395-4951-A863-00B52A6BBE83",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:citrix:xenserver:5.6:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0185CA86-C2BE-4445-A053-0FBDC670ED88",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:citrix:xenserver:5.6:fp1:*:*:*:*:*:*",
                    "matchCriteriaId": "6444BE32-E02D-49E3-BC2F-DE0593ADAF88",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:citrix:xenserver:5.6:sp2:*:*:*:*:*:*",
                    "matchCriteriaId": "DB215BC8-3376-42B8-98E3-7484715AB93F",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:citrix:xenserver:6.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9C1D10B8-202D-44A4-A872-88D7C11488D1",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:xen:xen:4.1.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0D532B60-C8DD-4A2F-9D05-E574D23EB754",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:xen:xen:4.1.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "5D83CA8B-8E49-45FA-8FAB-C15052474542",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:xen:xen:4.1.2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "27537DF5-7E0F-463F-BA87-46E329EE07AC",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:xen:xen:4.1.3:*:*:*:*:*:*:*",
                    "matchCriteriaId": "3EA4F978-9145-4FE6-B4F9-15207E52C40A",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors."
          },
          {
            "lang": "es",
            "value": "La hypercall physdev_get_free_pirq en arch/x86/physdev.c en Xen v4.1.x y Citrix XenServer v6.0.2 y anteriores utiliza el valor devuelto por la funci\u00f3n get_free_pirq como un \u00edndice de la matriz sin comprobar que el valor de retorno indica un error, permitiendo a los hu\u00e9spedes del OS invitado causar una denegaci\u00f3n de servicio (escritura de memoria no v\u00e1lidas y ca\u00edda del host) y, posiblemente, obtener privilegios a trav\u00e9s de vectores no especificados."
          }
        ],
        "id": "CVE-2012-3495",
        "lastModified": "2026-04-29T01:13:23.040",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 6.1,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 8.5,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ]
        },
        "published": "2012-11-23T20:55:03.150",
        "references": [
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.xen.org/archives/html/xen-announce/2012-09/msg00001.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://secunia.com/advisories/51413"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://secunia.com/advisories/55082"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://security.gentoo.org/glsa/glsa-201309-24.xml"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://support.citrix.com/article/CTX134708"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://wiki.xen.org/wiki/Security_Announcements#XSA-13_hypercall_physdev_get_free_pirq_vulnerability"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.openwall.com/lists/oss-security/2012/09/05/6"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.securityfocus.com/bid/55406"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.securitytracker.com/id?1027480"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://xenbits.xen.org/hg/xen-4.1-testing.hg/rev/6779ddca8593"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://security.gentoo.org/glsa/201604-03"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.xen.org/archives/html/xen-announce/2012-09/msg00001.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://secunia.com/advisories/51413"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://secunia.com/advisories/55082"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://security.gentoo.org/glsa/glsa-201309-24.xml"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://support.citrix.com/article/CTX134708"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://wiki.xen.org/wiki/Security_Announcements#XSA-13_hypercall_physdev_get_free_pirq_vulnerability"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.openwall.com/lists/oss-security/2012/09/05/6"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/bid/55406"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securitytracker.com/id?1027480"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://xenbits.xen.org/hg/xen-4.1-testing.hg/rev/6779ddca8593"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.gentoo.org/glsa/201604-03"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-20"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T12:48:52+00:00",
      "cve": "CVE-2012-3495",
      "id": "CVE-2012-3495",
      "initial_release_date": "2012-09-05T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: xen: hypercall physdev_get_free_pirq vulnerability",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2012/cve-2012-3495.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2025-10-08T01:01:39Z",
      "cve": "CVE-2012-3495",
      "id": "CVE-2012-3495",
      "initial_release_date": "2023-02-15T05:45:41Z",
      "product_status:recommended": "64",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2012-3495",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2012-3495.json",
      "version": "8"
    }
  }
}



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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

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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.
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  • 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.



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.