{"id":"UBUNTU-CVE-2019-17185","details":"In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes. This mean multiple threads use the same BN_CTX instance concurrently, resulting in crashes when concurrent EAP-pwd handshakes are initiated. This can be abused by an adversary as a Denial-of-Service (DoS) attack.","modified":"2026-04-22T13:37:41.219123Z","published":"2020-03-21T01:15:00Z","related":["USN-5785-1"],"upstream":["CVE-2019-17185"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-17185"},{"type":"REPORT","url":"https://github.com/FreeRADIUS/freeradius-server/commit/6b522f8780813726799e6b8cf0f1f8e0ce2c8ebf"},{"type":"REPORT","url":"https://freeradius.org/security/"},{"type":"REPORT","url":"https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5785-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-17185"}],"affected":[{"package":{"name":"freeradius","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/freeradius@3.0.16+dfsg-1ubuntu3.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.16+dfsg-1ubuntu3.2"}]}],"versions":["3.0.15+dfsg-1ubuntu2","3.0.16+dfsg-1ubuntu2","3.0.16+dfsg-1ubuntu3","3.0.16+dfsg-1ubuntu3.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"3.0.16+dfsg-1ubuntu3.2","binary_name":"freeradius"},{"binary_name":"freeradius-common","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"freeradius-config","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"freeradius-dhcp","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"freeradius-iodbc","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"freeradius-krb5","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"freeradius-ldap","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"freeradius-memcached","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"freeradius-mysql","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"freeradius-postgresql","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"freeradius-redis","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"freeradius-rest","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"freeradius-utils","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"freeradius-yubikey","binary_version":"3.0.16+dfsg-1ubuntu3.2"},{"binary_name":"libfreeradius3","binary_version":"3.0.16+dfsg-1ubuntu3.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-17185.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}