CVE-2015-5166

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2015-08-03T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "Use-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2016-12-20T16:57:01.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"name": "FEDORA-2015-15944", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167820.html"}, {"name": "FEDORA-2015-14361", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165373.html"}, {"name": "FEDORA-2015-15946", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167792.html"}, {"name": "76152", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/76152"}, {"name": "1033175", "tags": ["vdb-entry", "x_refsource_SECTRACK"], "url": "http://www.securitytracker.com/id/1033175"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://xenbits.xen.org/xsa/advisory-139.html"}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T06:41:07.558Z"}, "title": "CVE Program Container", "references": [{"name": "FEDORA-2015-15944", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167820.html"}, {"name": "FEDORA-2015-14361", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165373.html"}, {"name": "FEDORA-2015-15946", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167792.html"}, {"name": "76152", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/76152"}, {"name": "1033175", "tags": ["vdb-entry", "x_refsource_SECTRACK", "x_transferred"], "url": "http://www.securitytracker.com/id/1033175"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://xenbits.xen.org/xsa/advisory-139.html"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2015-5166", "datePublished": "2015-08-12T14:00:00.000Z", "dateReserved": "2015-07-01T00:00:00.000Z", "dateUpdated": "2024-08-06T06:41:07.558Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*", "matchCriteriaId": "56BDB5A0-0839-4A20-A003-B8CD56F48171", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*", "matchCriteriaId": "253C303A-E577-4488-93E6-68A8DD942C38", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*", "matchCriteriaId": "FE6592AF-775F-4B8A-8E33-57A1239852E3", "versionEndIncluding": "4.5.0", "vulnerable": true}, {"criteria": "cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:*", "matchCriteriaId": "F0ED340C-6746-471E-9F2D-19D62D224B7A", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Use-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice."}, {"lang": "es", "value": "Vulnerabilidad de uso despu\u00e9s de liberaci\u00f3n en la memoria en QEMU en Xen 4.5.x y versiones anteriores, no desconecta completamente los dispositivos de bloque emulados, lo que permite a usuarios invitados HVM locales obtener privilegios desconectando un dispositivo de bloque dos veces."}], "id": "CVE-2015-5166", "lastModified": "2026-06-17T00:28:35.757", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2015-08-12T14:59:25.247", "references": [{"source": "secalert@redhat.com", "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165373.html"}, {"source": "secalert@redhat.com", "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167792.html"}, {"source": "secalert@redhat.com", "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167820.html"}, {"source": "secalert@redhat.com", "url": "http://www.securityfocus.com/bid/76152"}, {"source": "secalert@redhat.com", "url": "http://www.securitytracker.com/id/1033175"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Vendor Advisory"], "url": "http://xenbits.xen.org/xsa/advisory-139.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165373.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167792.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167820.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/76152"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securitytracker.com/id/1033175"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "http://xenbits.xen.org/xsa/advisory-139.html"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-264"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Xen project for reporting this issue. Upstream acknowledges Donghai Zhu (Alibaba) as the original reporter.", "bugzilla": {"description": "Qemu: BlockBackend object use after free issue (XSA-139)", "id": "1248997", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1248997"}, "csaw": false, "cvss": {"cvss_base_score": "2.9", "cvss_scoring_vector": "AV:A/AC:M/Au:N/C:N/I:N/A:P", "status": "draft"}, "cwe": "CWE-416", "details": ["Use-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice.", "A flaw has been found in the QEMU emulator built with IDE Emulation PCI PIIX3/4 support; the emulator is vulnerable to a use-after-free flaw, while writing data to an I/O port inside a guest. This issue is specific to the Xen platform. A privileged(CAP_SYS_RAWIO) guest user on the Xen platform could use this flaw to crash the QEMU instance or attempt to make a guest escape to QEMU-process privileges."], "name": "CVE-2015-5166", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kvm", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "xen", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:openstack:5::el6", "fix_state": "Not affected", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)"}, {"cpe": "cpe:/a:redhat:openstack:6", "fix_state": "Not affected", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat Enterprise Linux OpenStack Platform 6 (Juno)"}, {"cpe": "cpe:/a:redhat:openstack:7", "fix_state": "Not affected", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)"}], "public_date": "2015-08-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2015-5166\nhttps://nvd.nist.gov/vuln/detail/CVE-2015-5166\nhttp://xenbits.xen.org/xsa/advisory-139.html"], "statement": "This issue does not affect the versions of kvm and xen packages as shipped with Red Hat Enterprise Linux 5.\nThis issue does not affect the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6.\nThis issue does not affect the Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.\nThis issue does not affect the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 7.\nThis issue does not affect the Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.\nThis issue does not affect the qemu-kvm-rhev packages as shipped with any currently supported versions of Red Hat Enterprise Linux OpenStack Platform.", "threat_severity": "Moderate"}

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