{"id":"UBUNTU-CVE-2015-3193","details":"The Montgomery squaring implementation in crypto/bn/asm/x86_64-mont5.pl in OpenSSL 1.0.2 before 1.0.2e on the x86_64 platform, as used by the BN_mod_exp function, mishandles carry propagation and produces incorrect output, which makes it easier for remote attackers to obtain sensitive private-key information via an attack against use of a (1) Diffie-Hellman (DH) or (2) Diffie-Hellman Ephemeral (DHE) ciphersuite.","modified":"2026-01-30T01:24:33.755606Z","published":"2015-12-03T00:00:00Z","withdrawn":"2025-07-18T16:43:12Z","related":["USN-2830-1"],"upstream":["CVE-2015-3193"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-3193"},{"type":"REPORT","url":"https://www.openssl.org/news/secadv/20151203.txt"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2830-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-3193"}],"affected":[{"package":{"name":"openssl","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.15?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1f-1ubuntu2.15"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"libcrypto1.0.0-udeb","binary_version":"1.0.1f-1ubuntu2.15"},{"binary_name":"libcrypto1.0.0-udeb-dbgsym","binary_version":"1.0.1f-1ubuntu2.15"},{"binary_name":"libssl-dev","binary_version":"1.0.1f-1ubuntu2.15"},{"binary_name":"libssl-dev-dbgsym","binary_version":"1.0.1f-1ubuntu2.15"},{"binary_name":"libssl-doc","binary_version":"1.0.1f-1ubuntu2.15"},{"binary_name":"libssl1.0.0","binary_version":"1.0.1f-1ubuntu2.15"},{"binary_name":"libssl1.0.0-dbg","binary_version":"1.0.1f-1ubuntu2.15"},{"binary_name":"libssl1.0.0-dbgsym","binary_version":"1.0.1f-1ubuntu2.15"},{"binary_name":"libssl1.0.0-udeb","binary_version":"1.0.1f-1ubuntu2.15"},{"binary_name":"libssl1.0.0-udeb-dbgsym","binary_version":"1.0.1f-1ubuntu2.15"},{"binary_name":"openssl","binary_version":"1.0.1f-1ubuntu2.15"},{"binary_name":"openssl-dbgsym","binary_version":"1.0.1f-1ubuntu2.15"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-3193.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}