{ "id": "CVE-2010-4255", "sourceIdentifier": "secalert@redhat.com", "published": "2011-01-25T01:00:01.393", "lastModified": "2018-10-10T20:07:52.833", "vulnStatus": "Modified", "descriptions": [ { "lang": "en", "value": "The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravirtualization is enabled, does not verify that kernel mode is used to call the handle_gdt_ldt_mapping_fault function, which allows guest OS users to cause a denial of service (host OS BUG_ON) via a crafted memory access." }, { "lang": "es", "value": "La funci\u00f3n fixup_page_fault en arch/x86/traps.c en Xen v.4.0.1 y anteriores sobre plataformas 64-bit, cuando se activa la paravirtualizaci\u00f3n, no verifica que el modo kernel est\u00e1 usado para llamar a la funci\u00f3n handle_gdt_ldt_mapping_fault, lo que permite a los usuarios invitados del sistema operativo provocar una denegaci\u00f3n de servicio (host OS BUG_ON) a trav\u00e9s de un acceso de memoria manipulado." } ], "metrics": { "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:C", "accessVector": "ADJACENT_NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 6.1 }, "baseSeverity": "MEDIUM", "exploitabilityScore": 6.5, "impactScore": 6.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "NVD-CWE-Other" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:citrix:xen:*:*:*:*:*:*:*:*", "versionEndIncluding": "4.0.1", "matchCriteriaId": "DDD35CC3-597F-4518-9E10-C320C4B11B73" }, { "vulnerable": 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"cpe:2.3:a:citrix:xen:3.4.1:*:*:*:*:*:*:*", "matchCriteriaId": "50786C9D-CBE1-4CA7-A159-2DACEA9FC739" }, { "vulnerable": true, "criteria": "cpe:2.3:a:citrix:xen:3.4.2:*:*:*:*:*:*:*", "matchCriteriaId": "D8BA4D2F-47C9-4127-92B3-21F91C73FCC4" }, { "vulnerable": true, "criteria": "cpe:2.3:a:citrix:xen:3.4.3:*:*:*:*:*:*:*", "matchCriteriaId": "905310D3-4E25-4C03-9D9A-6658FC307632" }, { "vulnerable": true, "criteria": "cpe:2.3:a:citrix:xen:4.0.0:*:*:*:*:*:*:*", "matchCriteriaId": "FCB3C3E5-3A28-4CC6-806F-8B47CD4C9FC4" } ] } ] } ], "references": [ { "url": "http://lists.xensource.com/archives/html/xen-devel/2010-11/msg01650.html", "source": "secalert@redhat.com", "tags": [ "Patch" ] }, { "url": "http://openwall.com/lists/oss-security/2010/11/30/5", "source": "secalert@redhat.com", "tags": [ "Patch" ] }, { "url": "http://openwall.com/lists/oss-security/2010/11/30/8", "source": "secalert@redhat.com", "tags": [ "Patch" ] }, { "url": "http://secunia.com/advisories/42884", "source": "secalert@redhat.com" }, { "url": "http://secunia.com/advisories/46397", "source": "secalert@redhat.com" }, { "url": "http://www.redhat.com/support/errata/RHSA-2011-0017.html", "source": "secalert@redhat.com" }, { "url": "http://www.securityfocus.com/archive/1/520102/100/0/threaded", "source": "secalert@redhat.com" }, { "url": "http://www.vmware.com/security/advisories/VMSA-2011-0012.html", "source": "secalert@redhat.com" }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=658155", "source": "secalert@redhat.com", "tags": [ "Patch" ] } ] }