CVE-2017-10917

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*", "matchCriteriaId": "7494A471-EEFC-44F4-96B1-FDBA3B780313", "versionEndIncluding": "4.8.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221."}, {"lang": "es", "value": "Xen hasta la versi\u00f3n 4.8.x, no comprueba los n\u00fameros de puerto de los puertos del canal de eventos sondeados, lo que permite a los usuarios del sistema operativo invitado causar una denegaci\u00f3n de servicio (desreferencia del puntero NULL y bloqueo del sistema operativo del host) o posiblemente obtener informaci\u00f3n confidencial, tambi\u00e9n se conoce como XSA-221."}], "id": "CVE-2017-10917", "lastModified": "2026-06-17T01:00:55.190", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 9.4, "confidentialityImpact": "COMPLETE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:C/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 9.2, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-07-05T01:29:00.737", "references": [{"source": "cve@mitre.org", "url": "http://www.debian.org/security/2017/dsa-3969"}, {"source": "cve@mitre.org", "url": "http://www.securityfocus.com/bid/99157"}, {"source": "cve@mitre.org", "url": "http://www.securitytracker.com/id/1038731"}, {"source": "cve@mitre.org", "url": "https://security.gentoo.org/glsa/201708-03"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Mitigation", "Third Party Advisory"], "url": "https://xenbits.xen.org/xsa/advisory-221.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.debian.org/security/2017/dsa-3969"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/99157"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securitytracker.com/id/1038731"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/201708-03"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Mitigation", "Third Party Advisory"], "url": "https://xenbits.xen.org/xsa/advisory-221.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Xen project for reporting this issue. Upstream acknowledges Ankur Arora (Oracle) as the original reporter.", "bugzilla": {"description": "xen: NULL pointer deref in event channel poll (XSA-221)", "id": "1458875", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1458875"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.5", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221."], "name": "CVE-2017-10917", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "xen", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2017-06-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-10917\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-10917\nhttp://xenbits.xen.org/xsa/advisory-221.html"], "threat_severity": "Important"}

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