{"id":"UBUNTU-CVE-2017-3733","details":"During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.","modified":"2025-07-16T08:21:12.988275Z","published":"2017-05-04T19:29:00Z","withdrawn":"2025-07-18T16:43:49Z","upstream":["CVE-2017-3733"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-3733"},{"type":"REPORT","url":"https://www.openssl.org/news/secadv/20170216.txt"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-3733"}],"affected":[{"package":{"name":"openssl","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.22?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1f-1ubuntu2.22"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"libcrypto1.0.0-udeb","binary_version":"1.0.1f-1ubuntu2.22"},{"binary_name":"libcrypto1.0.0-udeb-dbgsym","binary_version":"1.0.1f-1ubuntu2.22"},{"binary_name":"libssl-dev","binary_version":"1.0.1f-1ubuntu2.22"},{"binary_name":"libssl-dev-dbgsym","binary_version":"1.0.1f-1ubuntu2.22"},{"binary_name":"libssl-doc","binary_version":"1.0.1f-1ubuntu2.22"},{"binary_name":"libssl1.0.0","binary_version":"1.0.1f-1ubuntu2.22"},{"binary_name":"libssl1.0.0-dbg","binary_version":"1.0.1f-1ubuntu2.22"},{"binary_name":"libssl1.0.0-dbgsym","binary_version":"1.0.1f-1ubuntu2.22"},{"binary_name":"libssl1.0.0-udeb","binary_version":"1.0.1f-1ubuntu2.22"},{"binary_name":"libssl1.0.0-udeb-dbgsym","binary_version":"1.0.1f-1ubuntu2.22"},{"binary_name":"openssl","binary_version":"1.0.1f-1ubuntu2.22"},{"binary_name":"openssl-dbgsym","binary_version":"1.0.1f-1ubuntu2.22"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3733.json"}},{"package":{"name":"openssl","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/openssl@1.0.2g-1ubuntu4.6?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2g-1ubuntu4.6"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"libcrypto1.0.0-udeb","binary_version":"1.0.2g-1ubuntu4.6"},{"binary_name":"libcrypto1.0.0-udeb-dbgsym","binary_version":"1.0.2g-1ubuntu4.6"},{"binary_name":"libssl-dev","binary_version":"1.0.2g-1ubuntu4.6"},{"binary_name":"libssl-dev-dbgsym","binary_version":"1.0.2g-1ubuntu4.6"},{"binary_name":"libssl-doc","binary_version":"1.0.2g-1ubuntu4.6"},{"binary_name":"libssl1.0.0","binary_version":"1.0.2g-1ubuntu4.6"},{"binary_name":"libssl1.0.0-dbg","binary_version":"1.0.2g-1ubuntu4.6"},{"binary_name":"libssl1.0.0-dbgsym","binary_version":"1.0.2g-1ubuntu4.6"},{"binary_name":"libssl1.0.0-udeb","binary_version":"1.0.2g-1ubuntu4.6"},{"binary_name":"libssl1.0.0-udeb-dbgsym","binary_version":"1.0.2g-1ubuntu4.6"},{"binary_name":"openssl","binary_version":"1.0.2g-1ubuntu4.6"},{"binary_name":"openssl-dbgsym","binary_version":"1.0.2g-1ubuntu4.6"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3733.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"high"}]}