{ "id": "CVE-2014-8594", "sourceIdentifier": "cve@mitre.org", "published": "2014-11-19T18:59:10.533", "lastModified": "2018-10-30T16:27:35.843", "vulnStatus": "Modified", "descriptions": [ { "lang": "en", "value": "The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP)." }, { "lang": "es", "value": "La funci\u00f3n do_mmu_update en arch/x86/mm.c en Xen 4.x hasta la versi\u00f3n 4.4.x no restringe adecuadamente las actualizaciones a las tablas de p\u00e1gina s\u00f3lo para PV, lo que permite a invitados PV remotos provocar una denegaci\u00f3n de servicio (referencia a puntero NULL) aprovechando los servicios de emulaci\u00f3n de hardware para invitados HVM que utilizan Hardware Assisted Paging (HAP)." } ], "metrics": { "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:N/AC:H/Au:N/C:N/I:N/A:C", "accessVector": "NETWORK", "accessComplexity": "HIGH", "authentication": "NONE", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 5.4 }, "baseSeverity": "MEDIUM", "exploitabilityScore": 4.9, "impactScore": 6.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-20" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*", "matchCriteriaId": "A10BC294-9196-425F-9FB0-B1625465B47F" }, { "vulnerable": true, "criteria": "cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*", "matchCriteriaId": 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"http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.html", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] }, { "url": "http://www.debian.org/security/2015/dsa-3140", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] }, { "url": "http://www.securityfocus.com/bid/71149", "source": "cve@mitre.org" }, { "url": "http://xenbits.xen.org/xsa/advisory-109.html", "source": "cve@mitre.org", "tags": [ "Patch", "Vendor Advisory" ] }, { "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/98767", "source": "cve@mitre.org" }, { "url": "https://security.gentoo.org/glsa/201504-04", "source": "cve@mitre.org" } ] }