{"id":"UBUNTU-CVE-2018-16869","details":"A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process, could use this flaw extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.","modified":"2026-04-22T11:48:05.226974Z","published":"2018-12-03T14:29:00Z","related":["USN-4990-1"],"upstream":["CVE-2018-16869"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-16869"},{"type":"REPORT","url":"http://cat.eyalro.net/"},{"type":"REPORT","url":"https://lists.lysator.liu.se/pipermail/nettle-bugs/2018/007363.html"},{"type":"REPORT","url":"https://lists.debian.org/debian-lts/2019/03/msg00021.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4990-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-16869"}],"affected":[{"package":{"name":"nettle","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/nettle@2.7.1-1ubuntu0.2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.1-1","2.7.1-1ubuntu0.1","2.7.1-1ubuntu0.2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.7.1-1ubuntu0.2","binary_name":"libhogweed2"},{"binary_version":"2.7.1-1ubuntu0.2","binary_name":"libnettle4"},{"binary_version":"2.7.1-1ubuntu0.2","binary_name":"nettle-bin"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-16869.json"}},{"package":{"name":"nettle","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/nettle@3.2-1ubuntu0.16.04.2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.1-4","3.2-1","3.2-1ubuntu0.16.04.1","3.2-1ubuntu0.16.04.2"],"ecosystem_specific":{"binaries":[{"binary_version":"3.2-1ubuntu0.16.04.2","binary_name":"libhogweed4"},{"binary_version":"3.2-1ubuntu0.16.04.2","binary_name":"libnettle6"},{"binary_version":"3.2-1ubuntu0.16.04.2","binary_name":"nettle-bin"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-16869.json"}},{"package":{"name":"nettle","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/nettle@3.4.1-0ubuntu0.18.04.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.1-0ubuntu0.18.04.1"}]}],"versions":["3.3-2","3.4-1","3.4-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.4.1-0ubuntu0.18.04.1","binary_name":"libhogweed4"},{"binary_version":"3.4.1-0ubuntu0.18.04.1","binary_name":"libnettle6"},{"binary_version":"3.4.1-0ubuntu0.18.04.1","binary_name":"nettle-bin"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-16869.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N"},{"type":"Ubuntu","score":"low"}]}