{"id":"UBUNTU-CVE-2015-1791","details":"Race condition in the ssl3_get_new_session_ticket function in ssl/s3_clnt.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b, when used for a multi-threaded client, allows remote attackers to cause a denial of service (double free and application crash) or possibly have unspecified other impact by providing a NewSessionTicket during an attempt to reuse a ticket that had been obtained earlier.","modified":"2026-01-30T00:58:22.459211Z","published":"2015-06-02T00:00:00Z","related":["USN-2639-1"],"upstream":["CVE-2015-1791"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-1791"},{"type":"REPORT","url":"https://www.openssl.org/news/secadv_20150611.txt"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2639-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-1791"}],"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_version":"1.0.1f-1ubuntu2.15","binary_name":"libssl-dev"},{"binary_version":"1.0.1f-1ubuntu2.15","binary_name":"libssl1.0.0"},{"binary_version":"1.0.1f-1ubuntu2.15","binary_name":"openssl"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-1791.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}