{"id":"UBUNTU-CVE-2014-3509","details":"Race condition in the ssl_parse_serverhello_tlsext function in t1_lib.c in OpenSSL 1.0.0 before 1.0.0n and 1.0.1 before 1.0.1i, when multithreading and session resumption are used, allows remote SSL servers to cause a denial of service (memory overwrite and client application crash) or possibly have unspecified other impact by sending Elliptic Curve (EC) Supported Point Formats Extension data.","modified":"2026-04-22T09:40:11.699579Z","published":"2014-08-07T00:00:00Z","related":["USN-2308-1"],"upstream":["CVE-2014-3509"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2014-3509"},{"type":"REPORT","url":"https://www.openssl.org/news/secadv_20140806.txt"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2308-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2014-3509"}],"affected":[{"package":{"name":"openssl","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.5?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1f-1ubuntu2.5"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.0.1f-1ubuntu2.5","binary_name":"libssl1.0.0"},{"binary_version":"1.0.1f-1ubuntu2.5","binary_name":"openssl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-3509.json"}}],"schema_version":"1.7.5","severity":[{"type":"Ubuntu","score":"medium"}]}