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En este caso, el invitado L1 podría acceder a los valores de registro APIC de L0 a través del invitado L2, cuando `virtualize x2APIC mode' está habilitado. Un invitado podría utilizar este fallo para bloquear el núcleo del host, lo que provocaría un problema de denegación de servicio. El kernel, versión 4.16 y posteriores son vulnerables a este problema."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H","baseScore":5.6,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.1,"impactScore":4.0}],"cvssMetricV30":[{"source":"secalert@redhat.com","type":"Secondary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:H","baseScore":6.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"HIGH"},"exploitabilityScore":0.8,"impactScore":5.3}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:N/I:N/A:C","baseScore":4.7,"accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"COMPLETE"},"baseSeverity":"MEDIUM","exploitabilityScore":3.4,"impactScore":6.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"secalert@redhat.com","type":"Secondary","description":[{"lang":"en","value":"CWE-863"}]},{"source":"nvd@nist.gov","type":"Secondary","description":[{"lang":"en","value":"CWE-863"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","matchCriteriaId":"70C736CC-2D30-4710-A0AE-3A146DF7C1D1"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*","matchCriteriaId":"D100F7CE-FC64-4CC6-852A-6136D72DA419"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","matchCriteriaId":"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D"},{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*","matchCriteriaId":"07C312A0-CD2C-4B9C-B064-6409B25C278F"},{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*","matchCriteriaId":"CD783B0C-9246-47D9-A937-6144FE8BFF0F"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*","matchCriteriaId":"F4CFF558-3C47-480D-A2F0-BABF26042943"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*","matchCriteriaId":"92BC9265-6959-4D37-BE5E-8C45E98992F8"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*","matchCriteriaId":"831F0F47-3565-4763-B16F-C87B1FF2035E"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*","matchCriteriaId":"0E3F09B5-569F-4C58-9FCA-3C0953D107B5"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_real_time:8:*:*:*:*:*:*:*","matchCriteriaId":"CBF9BCF3-187F-410A-96CA-9C47D3ED6924"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv:8:*:*:*:*:*:*:*","matchCriteriaId":"E5CB3640-F55B-4127-875A-2F52D873D179"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv_tus:8.2:*:*:*:*:*:*:*","matchCriteriaId":"77C61DDC-81F3-4E2D-9CAA-17A256C85443"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv_tus:8.4:*:*:*:*:*:*:*","matchCriteriaId":"B6B0DA79-DF12-4418-B075-F048C9E2979A"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_real_time_tus:8.2:*:*:*:*:*:*:*","matchCriteriaId":"B92409A9-0D6B-4B7E-8847-1B63837D201F"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_for_real_time_tus:8.4:*:*:*:*:*:*:*","matchCriteriaId":"C5C5860E-9FEB-4259-92FD-A85911E2F99E"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*","matchCriteriaId":"6897676D-53F9-45B3-B27F-7FF9A4C58D33"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*","matchCriteriaId":"E28F226A-CBC7-4A32-BE58-398FA5B42481"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*","matchCriteriaId":"B09ACF2D-D83F-4A86-8185-9569605D8EE1"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*","matchCriteriaId":"AC10D919-57FD-4725-B8D2-39ECB476902F"}]}]}],"references":[{"url":"http://www.securityfocus.com/bid/107850","source":"secalert@redhat.com","tags":["Third 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