{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-12T07:08:33.564","vulnerabilities":[{"cve":{"id":"CVE-2020-27777","sourceIdentifier":"secalert@redhat.com","published":"2020-12-15T17:15:14.333","lastModified":"2024-11-21T05:21:48.973","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel."},{"lang":"es","value":"Se encontró un fallo en la manera en que RTAS manejaba los accesos a la memoria en el espacio de usuario para la comunicación del kernel.&#xa0;En un sistema invitado bloqueado (generalmente debido al arranque seguro) que se ejecuta en la parte superior de los hipervisores PowerVM o KVM (plataforma pseries), un usuario root como local podría usar este fallo para aumentar aún más sus privilegios a los de un kernel en ejecución"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","baseScore":6.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":0.8,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:C/I:C/A:C","baseScore":7.2,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":3.9,"impactScore":10.0,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"secalert@redhat.com","type":"Secondary","description":[{"lang":"en","value":"CWE-862"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.14.204","matchCriteriaId":"4E937D66-38EE-44AF-9561-1993C02F24DD"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.155","matchCriteriaId":"61F20A9F-6DA5-4498-AF1E-B63EA84CA3C8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.75","matchCriteriaId":"AAD5B8FD-0B39-4703-BEAD-416748572631"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.9.5","matchCriteriaId":"5920FDB4-0E83-4A68-A361-6CE1CB05000F"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:redhat:openshift_container_platform:4.4:*:*:*:*:*:*:*","matchCriteriaId":"44C5E433-229C-4BB9-8481-8A74AFA8DB8E"},{"vulnerable":true,"criteria":"cpe:2.3:a:redhat:openshift_container_platform:4.5:*:*:*:*:*:*:*","matchCriteriaId":"D432C063-0805-4151-A819-508FE8954101"},{"vulnerable":true,"criteria":"cpe:2.3:a:redhat:openshift_container_platform:4.6:*:*:*:*:*:*:*","matchCriteriaId":"6B62E762-2878-455A-93C9-A5DB430D7BB5"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*","matchCriteriaId":"1D8B549B-E57B-4DFE-8A13-CAB06B5356B3"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*","matchCriteriaId":"2F6AB192-9D7D-4A9A-8995-E53A9DE9EAFC"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*","matchCriteriaId":"142AD0DD-4CF3-4D74-9442-459CE3347E3A"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*","matchCriteriaId":"F4CFF558-3C47-480D-A2F0-BABF26042943"}]}]}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1900844","source":"secalert@redhat.com","tags":["Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=bd59380c5ba4147dcbaad3e582b55ccfd120b764","source":"secalert@redhat.com","tags":["Exploit","Patch","Vendor Advisory"]},{"url":"https://www.openwall.com/lists/oss-security/2020/10/09/1","source":"secalert@redhat.com","tags":["Exploit","Mailing List","Patch","Third Party Advisory"]},{"url":"https://www.openwall.com/lists/oss-security/2020/11/23/2","source":"secalert@redhat.com","tags":["Mailing List","Third Party Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1900844","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=bd59380c5ba4147dcbaad3e582b55ccfd120b764","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Patch","Vendor Advisory"]},{"url":"https://www.openwall.com/lists/oss-security/2020/10/09/1","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Mailing List","Patch","Third Party Advisory"]},{"url":"https://www.openwall.com/lists/oss-security/2020/11/23/2","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"]}]}}]}