CVE-2019-3840

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Un atacante en una m\u00e1quina virtual invitada puede emplear este error para provocar el cierre inesperado de libvirtd y provocar una denegaci\u00f3n de servicio (DoS)."}], "id": "CVE-2019-3840", "lastModified": "2026-06-17T02:35:42.107", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 3.5, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:S/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 6.8, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 1.3, "impactScore": 4.0, "source": "secalert@redhat.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 4.0, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-03-27T13:29:01.680", "references": [{"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00101.html"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2019:2294"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1663051"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3840"}, {"source": "secalert@redhat.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://www.redhat.com/archives/libvir-list/2019-January/msg00241.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00101.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://access.redhat.com/errata/RHSA-2019:2294"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1663051"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3840"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Vendor Advisory"], "url": "https://www.redhat.com/archives/libvir-list/2019-January/msg00241.html"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2019:2294", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "libvirt-0:4.5.0-23.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2019-08-06T00:00:00Z"}], "bugzilla": {"description": "libvirt: NULL pointer dereference after running qemuAgentCommand in qemuAgentGetInterfaces function", "id": "1665228", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1665228"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.8", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-476", "details": ["A NULL pointer dereference flaw was discovered in libvirt before version 5.0.0 in the way it gets interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash libvirtd and cause a denial of service.", "A NULL pointer dereference flaw was discovered in libvirt in the way it gets interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash libvirtd and cause a denial of service."], "name": "CVE-2019-3840", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "libvirt", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "libvirt", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "libvirt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:storage:3", "fix_state": "Not affected", "package_name": "libvirt", "product_name": "Red Hat Storage 3"}], "public_date": "2019-01-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-3840\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-3840"], "threat_severity": "Moderate"}

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