{"id":"UBUNTU-CVE-2018-5407","details":"Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention'.","modified":"2026-01-30T01:22:49.291075Z","published":"2018-11-15T00:00:00Z","related":["USN-3840-1"],"upstream":["CVE-2018-5407"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-5407"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2018/11/01/4"},{"type":"REPORT","url":"https://github.com/bbbrumley/portsmash"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3840-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-5407"}],"affected":[{"package":{"name":"openssl","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.27?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1f-1ubuntu2.27"}]}],"versions":["1.0.1e-3ubuntu1","1.0.1e-4ubuntu1","1.0.1e-4ubuntu2","1.0.1e-4ubuntu3","1.0.1e-4ubuntu4","1.0.1f-1ubuntu1","1.0.1f-1ubuntu2","1.0.1f-1ubuntu2.1","1.0.1f-1ubuntu2.2","1.0.1f-1ubuntu2.3","1.0.1f-1ubuntu2.4","1.0.1f-1ubuntu2.5","1.0.1f-1ubuntu2.7","1.0.1f-1ubuntu2.8","1.0.1f-1ubuntu2.11","1.0.1f-1ubuntu2.12","1.0.1f-1ubuntu2.15","1.0.1f-1ubuntu2.16","1.0.1f-1ubuntu2.17","1.0.1f-1ubuntu2.18","1.0.1f-1ubuntu2.19","1.0.1f-1ubuntu2.20","1.0.1f-1ubuntu2.21","1.0.1f-1ubuntu2.22","1.0.1f-1ubuntu2.23","1.0.1f-1ubuntu2.24","1.0.1f-1ubuntu2.25","1.0.1f-1ubuntu2.26"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.0.1f-1ubuntu2.27","binary_name":"libssl-dev"},{"binary_version":"1.0.1f-1ubuntu2.27","binary_name":"libssl1.0.0"},{"binary_version":"1.0.1f-1ubuntu2.27","binary_name":"openssl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-5407.json"}},{"package":{"name":"openssl","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/openssl@1.0.2g-1ubuntu4.14?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2g-1ubuntu4.14"}]}],"versions":["1.0.2d-0ubuntu1","1.0.2d-0ubuntu2","1.0.2e-1ubuntu1","1.0.2f-2ubuntu1","1.0.2g-1ubuntu2","1.0.2g-1ubuntu3","1.0.2g-1ubuntu4","1.0.2g-1ubuntu4.1","1.0.2g-1ubuntu4.2","1.0.2g-1ubuntu4.4","1.0.2g-1ubuntu4.5","1.0.2g-1ubuntu4.6","1.0.2g-1ubuntu4.8","1.0.2g-1ubuntu4.9","1.0.2g-1ubuntu4.10","1.0.2g-1ubuntu4.11","1.0.2g-1ubuntu4.12","1.0.2g-1ubuntu4.13"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.0.2g-1ubuntu4.14","binary_name":"libssl-dev"},{"binary_version":"1.0.2g-1ubuntu4.14","binary_name":"libssl1.0.0"},{"binary_version":"1.0.2g-1ubuntu4.14","binary_name":"openssl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-5407.json"}},{"package":{"name":"openssl","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/openssl@1.1.0g-2ubuntu4.3?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0g-2ubuntu4.3"}]}],"versions":["1.0.2g-1ubuntu13","1.0.2g-1ubuntu14","1.0.2n-1ubuntu1","1.1.0g-2ubuntu1","1.1.0g-2ubuntu2","1.1.0g-2ubuntu3","1.1.0g-2ubuntu4","1.1.0g-2ubuntu4.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.1.0g-2ubuntu4.3","binary_name":"libssl-dev"},{"binary_version":"1.1.0g-2ubuntu4.3","binary_name":"libssl1.1"},{"binary_version":"1.1.0g-2ubuntu4.3","binary_name":"openssl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-5407.json"}},{"package":{"name":"openssl1.0","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/openssl1.0@1.0.2n-1ubuntu5.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2n-1ubuntu5.2"}]}],"versions":["1.0.2n-1ubuntu2","1.0.2n-1ubuntu3","1.0.2n-1ubuntu4","1.0.2n-1ubuntu5","1.0.2n-1ubuntu5.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.0.2n-1ubuntu5.2","binary_name":"libssl1.0-dev"},{"binary_version":"1.0.2n-1ubuntu5.2","binary_name":"libssl1.0.0"},{"binary_version":"1.0.2n-1ubuntu5.2","binary_name":"openssl1.0"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-5407.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"low"}]}