{"id":"UBUNTU-CVE-2018-12384","details":"When handling a SSLv2-compatible ClientHello request, the server doesn't generate a new random value but sends an all-zero value instead. This results in full malleability of the ClientHello for SSLv2 used for TLS 1.2 in all versions prior to NSS 3.39. This does not impact TLS 1.3.","modified":"2026-02-04T03:39:53.101886Z","published":"2018-09-04T00:00:00Z","related":["USN-3850-1","USN-3850-2"],"upstream":["CVE-2018-12384"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-12384"},{"type":"REPORT","url":"https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.39_release_notes"},{"type":"REPORT","url":"https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.36.5_release_notes"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3850-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3850-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-12384"}],"affected":[{"package":{"name":"nss","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/nss@2:3.28.4-0ubuntu0.14.04.4?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:3.28.4-0ubuntu0.14.04.4"}]}],"versions":["2:3.15.1-1ubuntu1","2:3.15.2-1","2:3.15.3-1","2:3.15.3.1-1","2:3.15.3.1-1.1","2:3.15.3.1-1.1ubuntu1","2:3.15.4-1ubuntu3","2:3.15.4-1ubuntu4","2:3.15.4-1ubuntu5","2:3.15.4-1ubuntu6","2:3.15.4-1ubuntu7","2:3.15.4-1ubuntu7.1","2:3.17-0ubuntu0.14.04.1","2:3.17.1-0ubuntu0.14.04.1","2:3.17.1-0ubuntu0.14.04.2","2:3.17.4-0ubuntu0.14.04.1","2:3.19.2-0ubuntu0.14.04.1","2:3.19.2.1-0ubuntu0.14.04.1","2:3.19.2.1-0ubuntu0.14.04.2","2:3.21-0ubuntu0.14.04.1","2:3.21-0ubuntu0.14.04.2","2:3.23-0ubuntu0.14.04.1","2:3.26.2-0ubuntu0.14.04.3","2:3.28.4-0ubuntu0.14.04.1","2:3.28.4-0ubuntu0.14.04.2","2:3.28.4-0ubuntu0.14.04.3"],"ecosystem_specific":{"binaries":[{"binary_version":"2:3.28.4-0ubuntu0.14.04.4","binary_name":"libnss3"},{"binary_version":"2:3.28.4-0ubuntu0.14.04.4","binary_name":"libnss3-1d"},{"binary_version":"2:3.28.4-0ubuntu0.14.04.4","binary_name":"libnss3-dev"},{"binary_version":"2:3.28.4-0ubuntu0.14.04.4","binary_name":"libnss3-nssdb"},{"binary_version":"2:3.28.4-0ubuntu0.14.04.4","binary_name":"libnss3-tools"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-12384.json"}},{"package":{"name":"nss","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/nss@2:3.28.4-0ubuntu0.16.04.4?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:3.28.4-0ubuntu0.16.04.4"}]}],"versions":["2:3.19.2-1ubuntu1","2:3.19.2.1-0ubuntu1","2:3.21-1ubuntu2","2:3.21-1ubuntu3","2:3.21-1ubuntu4","2:3.23-0ubuntu0.16.04.1","2:3.26.2-0ubuntu0.16.04.2","2:3.28.4-0ubuntu0.16.04.1","2:3.28.4-0ubuntu0.16.04.2","2:3.28.4-0ubuntu0.16.04.3"],"ecosystem_specific":{"binaries":[{"binary_version":"2:3.28.4-0ubuntu0.16.04.4","binary_name":"libnss3"},{"binary_version":"2:3.28.4-0ubuntu0.16.04.4","binary_name":"libnss3-1d"},{"binary_version":"2:3.28.4-0ubuntu0.16.04.4","binary_name":"libnss3-dev"},{"binary_version":"2:3.28.4-0ubuntu0.16.04.4","binary_name":"libnss3-nssdb"},{"binary_version":"2:3.28.4-0ubuntu0.16.04.4","binary_name":"libnss3-tools"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-12384.json"}},{"package":{"name":"nss","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/nss@2:3.35-2ubuntu2.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:3.35-2ubuntu2.1"}]}],"versions":["2:3.32-1ubuntu3","2:3.34-1ubuntu1","2:3.35-2ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_version":"2:3.35-2ubuntu2.1","binary_name":"libnss3"},{"binary_version":"2:3.35-2ubuntu2.1","binary_name":"libnss3-dev"},{"binary_version":"2:3.35-2ubuntu2.1","binary_name":"libnss3-tools"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-12384.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"low"}]}