{"id":"USN-4985-1","summary":"intel-microcode vulnerabilities","details":"It was discovered that some Intel processors may not properly invalidate\ncache entries used by Intel Virtualization Technology for Directed I/O\n(VT-d). This may allow a local user to perform a privilege escalation\nattack. (CVE-2020-24489)\n\nJoseph Nuzman discovered that some Intel processors may not properly apply\nEIBRS mitigations (originally developed for CVE-2017-5715) and hence may\nallow unauthorized memory reads via sidechannel attacks. A local attacker\ncould use this to expose sensitive information, including kernel\nmemory. (CVE-2020-24511)\n\nTravis Downs discovered that some Intel processors did not properly flush\ncache-lines for trivial-data values. This may allow an unauthorized user to\ninfer the presence of these trivial-data-cache-lines via timing sidechannel\nattacks. A local attacker could use this to expose sensitive\ninformation. (CVE-2020-24512)\n\nIt was discovered that certain Intel Atom processors could expose memory\ncontents stored in microarchitectural buffers. A local attacker could use\nthis to expose sensitive information. (CVE-2020-24513)\n","modified":"2026-02-10T04:42:13Z","published":"2021-06-09T05:22:21Z","related":["UBUNTU-CVE-2020-24489","UBUNTU-CVE-2020-24511","UBUNTU-CVE-2020-24512","UBUNTU-CVE-2020-24513"],"upstream":["CVE-2020-24489","CVE-2020-24511","CVE-2020-24512","CVE-2020-24513","UBUNTU-CVE-2020-24489","UBUNTU-CVE-2020-24511","UBUNTU-CVE-2020-24512","UBUNTU-CVE-2020-24513"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4985-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-24489"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-24511"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-24512"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-24513"}],"affected":[{"package":{"name":"intel-microcode","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/intel-microcode@3.20210608.0ubuntu0.14.04.1+esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.20210608.0ubuntu0.14.04.1+esm1"}]}],"versions":["1.20130906.1ubuntu2","1.20130906.1ubuntu3","2.20140122.1","2.20140430.1ubuntu1","2.20140624-t-1ubuntu2","3.20180108.0~ubuntu14.04.2","3.20180108.0+really20170707ubuntu14.04.1","3.20180312.0~ubuntu14.04.1","3.20180425.1~ubuntu0.14.04.1","3.20180425.1~ubuntu0.14.04.2","3.20180807a.0ubuntu0.14.04.1","3.20190514.0ubuntu0.14.04.1","3.20190514.0ubuntu0.14.04.2","3.20190618.0ubuntu0.14.04.1","3.20191112-0ubuntu0.14.04.2","3.20191115.1ubuntu0.14.04.1","3.20191115.1ubuntu0.14.04.2","3.20200609.0ubuntu0.14.04.0","3.20200609.0ubuntu0.14.04.1","3.20201110.0ubuntu0.14.04.1","3.20201110.0ubuntu0.14.04.2"],"ecosystem_specific":{"binaries":[{"binary_version":"3.20210608.0ubuntu0.14.04.1+esm1","binary_name":"intel-microcode"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2020-24489","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]},{"id":"CVE-2020-24511","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2020-24512","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2020-24513","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:14.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4985-1.json"}},{"package":{"name":"intel-microcode","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/intel-microcode@3.20210608.0ubuntu0.16.04.1+esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.20210608.0ubuntu0.16.04.1+esm1"}]}],"versions":["3.20150121.1","3.20151106.1","3.20170707.1~ubuntu16.04.0","3.20180108.0~ubuntu16.04.2","3.20180108.0+really20170707ubuntu16.04.1","3.20180312.0~ubuntu16.04.1","3.20180425.1~ubuntu0.16.04.1","3.20180425.1~ubuntu0.16.04.2","3.20180807a.0ubuntu0.16.04.1","3.20190514.0ubuntu0.16.04.1","3.20190514.0ubuntu0.16.04.2","3.20190618.0ubuntu0.16.04.1","3.20191112-0ubuntu0.16.04.2","3.20191115.1ubuntu0.16.04.1","3.20191115.1ubuntu0.16.04.2","3.20200609.0ubuntu0.16.04.0","3.20200609.0ubuntu0.16.04.1","3.20201110.0ubuntu0.16.04.1","3.20201110.0ubuntu0.16.04.2","3.20210216.0ubuntu0.16.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.20210608.0ubuntu0.16.04.1+esm1","binary_name":"intel-microcode"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2020-24489","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]},{"id":"CVE-2020-24511","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2020-24512","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2020-24513","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4985-1.json"}},{"package":{"name":"intel-microcode","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/intel-microcode@3.20210608.0ubuntu0.18.04.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.20210608.0ubuntu0.18.04.1"}]}],"versions":["3.20170707.1","3.20171117.1","3.20180108.1","3.20180108.1+really20171117.1","3.20180312.0~ubuntu18.04.1","3.20180425.1~ubuntu0.18.04.1","3.20180425.1~ubuntu0.18.04.2","3.20180807a.0ubuntu0.18.04.1","3.20190514.0ubuntu0.18.04.2","3.20190514.0ubuntu0.18.04.3","3.20190618.0ubuntu0.18.04.1","3.20191112-0ubuntu0.18.04.2","3.20191115.1ubuntu0.18.04.1","3.20191115.1ubuntu0.18.04.2","3.20200609.0ubuntu0.18.04.0","3.20200609.0ubuntu0.18.04.1","3.20201110.0ubuntu0.18.04.1","3.20201110.0ubuntu0.18.04.2","3.20210216.0ubuntu0.18.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.20210608.0ubuntu0.18.04.1","binary_name":"intel-microcode"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2020-24489","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]},{"id":"CVE-2020-24511","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2020-24512","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2020-24513","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4985-1.json"}},{"package":{"name":"intel-microcode","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/intel-microcode@3.20210608.0ubuntu0.20.04.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.20210608.0ubuntu0.20.04.1"}]}],"versions":["3.20190918.1ubuntu1","3.20191115.1ubuntu1","3.20191115.1ubuntu2","3.20191115.1ubuntu3","3.20200609.0ubuntu0.20.04.0","3.20200609.0ubuntu0.20.04.1","3.20200609.0ubuntu0.20.04.2","3.20201110.0ubuntu0.20.04.1","3.20201110.0ubuntu0.20.04.2","3.20210216.0ubuntu0.20.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.20210608.0ubuntu0.20.04.1","binary_name":"intel-microcode"}],"availability":"No 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