CVE-2016-9603

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A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process."}, {"lang": "es", "value": "Se ha detectado una vulnerabilidad de desbordamiento de b\u00fafer basado en memoria din\u00e1mica (heap) en el soporte del controlador de pantalla VNC del emulador Cirrus CLGD 54xx VGA de QEMU en versiones anteriores a la 2.9. El problema pod\u00eda ocurrir cuando un cliente VNC intentaba actualizar su pantalla despu\u00e9s de que un invitado realizara una operaci\u00f3n VGA. Un usuario/proceso privilegiado dentro de un guest podr\u00eda usar esta vulnerabilidad para provocar que el proceso de QEMU se cierre inesperadamente o, potencialmente, ejecutar c\u00f3digo arbitrario en el host con privilegios del proceso de QEMU."}], "id": "CVE-2016-9603", "lastModified": "2026-06-17T00:56:19.510", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "COMPLETE", "baseScore": 9.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", 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{"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2017:1441"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9603"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/201706-03"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://support.citrix.com/article/CTX221578"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-119"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2017:1206", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "qemu-kvm-2:0.12.1.2-2.503.el6_9.3", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2017-05-09T00:00:00Z"}, {"advisory": "RHSA-2017:0987", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "qemu-kvm-10:1.5.3-126.el7_3.6", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2017-04-18T00:00:00Z"}, {"advisory": "RHSA-2017:1441", "cpe": "cpe:/a:redhat:openstack:5::el6", "package": "qemu-kvm-rhev-2:0.12.1.2-2.503.el6_9.3", "product_name": "Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6", "release_date": "2017-06-14T00:00:00Z"}, {"advisory": "RHSA-2017:0980", "cpe": "cpe:/a:redhat:openstack:5::el7", "package": "qemu-kvm-rhev-10:2.6.0-28.el7_3.9", "product_name": "Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7", "release_date": "2017-04-18T00:00:00Z"}, {"advisory": "RHSA-2017:0981", "cpe": "cpe:/a:redhat:openstack:6::el7", "package": "qemu-kvm-rhev-10:2.6.0-28.el7_3.9", "product_name": "Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7", "release_date": "2017-04-18T00:00:00Z"}, {"advisory": "RHSA-2017:0982", "cpe": "cpe:/a:redhat:openstack:7::el7", "package": "qemu-kvm-rhev-10:2.6.0-28.el7_3.9", "product_name": "Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7", "release_date": "2017-04-18T00:00:00Z"}, {"advisory": "RHSA-2017:0988", "cpe": "cpe:/a:redhat:openstack:10::el7", "package": "qemu-kvm-rhev-10:2.6.0-28.el7_3.9", "product_name": "Red Hat OpenStack Platform 10.0 (Newton)", "release_date": "2017-04-18T00:00:00Z"}, {"advisory": "RHSA-2017:0983", "cpe": "cpe:/a:redhat:openstack:8::el7", "package": "qemu-kvm-rhev-10:2.6.0-28.el7_3.9", "product_name": "Red Hat OpenStack Platform 8.0 (Liberty)", "release_date": "2017-04-18T00:00:00Z"}, {"advisory": "RHSA-2017:0984", "cpe": "cpe:/a:redhat:openstack:9::el7", "package": "qemu-kvm-rhev-10:2.6.0-28.el7_3.9", "product_name": "Red Hat OpenStack Platform 9.0 (Mitaka)", "release_date": "2017-04-18T00:00:00Z"}, {"advisory": "RHSA-2017:0985", "cpe": "cpe:/o:redhat:enterprise_linux:7::hypervisor", "package": "qemu-kvm-rhev-10:2.6.0-28.el7_3.9", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 7", "release_date": "2017-04-18T00:00:00Z"}, {"advisory": "RHSA-2017:1205", "cpe": "cpe:/a:redhat:enterprise_linux:6::hypervisor", "package": "qemu-kvm-rhev-2:0.12.1.2-2.503.el6_9.3", "product_name": "RHEV 3.X Hypervisor and Agents for RHEL-6", "release_date": "2017-05-09T00:00:00Z"}, {"advisory": "RHSA-2017:0985", "cpe": "cpe:/o:redhat:enterprise_linux:7::hypervisor", "package": "qemu-kvm-rhev-10:2.6.0-28.el7_3.9", "product_name": "RHEV 3.X Hypervisor and Agents for RHEL-7", "release_date": "2017-04-18T00:00:00Z"}], "bugzilla": {"description": "Qemu: cirrus: heap buffer overflow via vnc connection", "id": "1430056", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1430056"}, "csaw": false, "cvss": {"cvss_base_score": "4.9", "cvss_scoring_vector": "AV:A/AC:M/Au:S/C:P/I:P/A:P", "status": "verified"}, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L", "status": "verified"}, "cwe": "CWE-122", "details": ["A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.", "A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process."], "name": "CVE-2016-9603", "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": "Affected", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/a:redhat:openstack:11", "fix_state": "Not affected", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat OpenStack Platform 11 (Ocata)"}], "public_date": "2017-03-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-9603\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-9603"], "threat_severity": "Important"}

{}