{"id":"UBUNTU-CVE-2016-3995","details":"The timing attack protection in Rijndael::Enc::ProcessAndXorBlock and Rijndael::Dec::ProcessAndXorBlock in Crypto++ (aka cryptopp) before 5.6.4 may be optimized out by the compiler, which allows attackers to conduct timing attacks.","modified":"2026-04-22T10:42:48.189015Z","published":"2017-02-13T18:59:00Z","upstream":["CVE-2016-3995"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-3995"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2016/04/10/6"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-3995"}],"affected":[{"package":{"name":"libcrypto++","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/libcrypto++@5.6.1-6+deb8u3build0.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.6.1-6+deb8u3build0.14.04.1"}]}],"versions":["5.6.1-6","5.6.1-6+deb8u1build0.14.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libcrypto++-utils","binary_version":"5.6.1-6+deb8u3build0.14.04.1"},{"binary_name":"libcrypto++9","binary_version":"5.6.1-6+deb8u3build0.14.04.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-3995.json"}},{"package":{"name":"libcrypto++","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libcrypto++@5.6.1-9ubuntu0.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.6.1-9ubuntu0.1"}]}],"versions":["5.6.1-8","5.6.1-9"],"ecosystem_specific":{"binaries":[{"binary_name":"libcrypto++-utils","binary_version":"5.6.1-9ubuntu0.1"},{"binary_name":"libcrypto++9v5","binary_version":"5.6.1-9ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-3995.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}