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"matchCriteriaId": "436BABC6-3D1C-4945-AADF-ED4D7C686E35", "vulnerable": true}, {"criteria": "cpe:2.3:a:qemu:qemu:1.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "C3307CBF-525D-4F66-A7A6-B0B273C0BD7C", "vulnerable": true}, {"criteria": "cpe:2.3:a:qemu:qemu:1.1:rc4:*:*:*:*:*:*", "matchCriteriaId": "E0A03725-CE1B-451F-8E14-9168E417692C", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The pciej_write function in hw/acpi_piix4.c in the PIIX4 Power Management emulation in qemu-kvm does not check if a device is hotpluggable before unplugging the PCI-ISA bridge, which allows privileged guest users to cause a denial of service (guest crash) and possibly execute arbitrary code by sending a crafted value to the 0xae08 (PCI_EJ_BASE) I/O port, which leads to a use-after-free related to \"active qemu timers.\""}, {"lang": "es", "value": "La funci\u00f3n pciej_write en hw/acpi_piix4.c en la emulaci\u00f3n de PIIX4 Power Management en qemu-kvm no comprueba si un dispositivo es conectable en caliente antes de desconectar el puente PCI-ISA, lo que permite causar una denegaci\u00f3n de servicio y posiblemente ejecutar c\u00f3digo de su elecci\u00f3n a los usuarios privilegiados invitados mediante el env\u00edo de un valor espec\u00edfico al puerto I/O 0xae08 (PCI_EJ_BASE), lo que provoca a un uso despu\u00e9s de liberaci\u00f3n relacionado con \"temporizadores qemu activos\"."}], "id": "CVE-2011-1751", "lastModified": "2025-04-11T00:51:21.963", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "ADJACENT_NETWORK", "authentication": "SINGLE", "availabilityImpact": "COMPLETE", "baseScore": 7.4, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:A/AC:M/Au:S/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 4.4, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2012-06-21T15:55:09.613", "references": [{"source": "secalert@redhat.com", "url": "http://blog.nelhage.com/2011/08/breaking-out-of-kvm/"}, {"source": "secalert@redhat.com", "url": "http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commit%3Bh=505597e4476a6bc219d0ec1362b760d71cb4fdca"}, {"source": "secalert@redhat.com", "url": "http://lists.nongnu.org/archive/html/qemu-devel/2011-05/msg01810.html"}, {"source": "secalert@redhat.com", "url": "http://lists.opensuse.org/opensuse-updates/2011-05/msg00043.html"}, {"source": "secalert@redhat.com", "url": "http://rhn.redhat.com/errata/RHSA-2011-0534.html"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/44393"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/44458"}, {"source": "secalert@redhat.com", "tags": 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"https://www.ubuntu.com/usn/USN-1145-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://blog.nelhage.com/2011/08/breaking-out-of-kvm/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commit%3Bh=505597e4476a6bc219d0ec1362b760d71cb4fdca"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.nongnu.org/archive/html/qemu-devel/2011-05/msg01810.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-updates/2011-05/msg00043.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://rhn.redhat.com/errata/RHSA-2011-0534.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/44393"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/44458"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/44648"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/44658"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/44660"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/44900"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2011/05/19/2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.osvdb.org/73395"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/47927"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=699773"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/nelhage/virtunoid"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://hermes.opensuse.org/messages/8572547"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.ubuntu.com/usn/USN-1145-1/"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Nelson Elhage for reporting this issue.", "affected_release": [{"advisory": "RHSA-2011:0534", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "qemu-kvm-2:0.12.1.2-2.160.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2011-05-19T00:00:00Z"}], "bugzilla": {"description": "qemu: acpi_piix4: missing hotplug check during device removal", "id": "699773", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=699773"}, "csaw": false, "cvss": {"cvss_base_score": "7.4", "cvss_scoring_vector": "AV:A/AC:M/Au:S/C:C/I:C/A:C", "status": "verified"}, "cwe": "CWE-672->CWE-119", "details": ["The pciej_write function in hw/acpi_piix4.c in the PIIX4 Power Management emulation in qemu-kvm does not check if a device is hotpluggable before unplugging the PCI-ISA bridge, which allows privileged guest users to cause a denial of service (guest crash) and possibly execute arbitrary code by sending a crafted value to the 0xae08 (PCI_EJ_BASE) I/O port, which leads to a use-after-free related to \"active qemu timers.\""], "name": "CVE-2011-1751", "package_state": [{"cpe": "cpe:/o:redhat:rhel_eus:6.0", "fix_state": "Affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux Extended Update Support 6.0"}], "public_date": "2011-05-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2011-1751\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-1751"], "statement": "This issue only affects Red Hat Enterprise Linux 6. The version of the qemu/kvm as shipped with Red Hat Enterprise Linux 5 is not affected.", "threat_severity": "Important"}

{}