{"id":"DEBIAN-CVE-2005-2531","details":"OpenVPN before 2.0.1, when running with \"verb 0\" and without TLS authentication, does not properly flush the OpenSSL error queue when a client fails certificate authentication to the server and causes the error to be processed by the wrong client, which allows remote attackers to cause a denial of service (client disconnection) via a large number of failed authentication attempts.","modified":"2026-09-22T16:47:38.452544241Z","published":"2005-08-24T04:00:00Z","upstream":["CVE-2005-2531"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2005-2531"}],"affected":[{"package":{"name":"openvpn","ecosystem":"Debian:12","purl":"pkg:deb/debian/openvpn?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.2-1"}]}],"ecosystem_specific":{"urgency":"high"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2005-2531.json"}},{"package":{"name":"openvpn","ecosystem":"Debian:13","purl":"pkg:deb/debian/openvpn?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.2-1"}]}],"ecosystem_specific":{"urgency":"high"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2005-2531.json"}},{"package":{"name":"openvpn","ecosystem":"Debian:14","purl":"pkg:deb/debian/openvpn?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.2-1"}]}],"ecosystem_specific":{"urgency":"high"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2005-2531.json"}}],"schema_version":"1.9.0"}