{"id":"CVE-2009-0362","details":"filter.d/wuftpd.conf in Fail2ban 0.8.3 uses an incorrect regular expression that allows remote attackers to cause a denial of service (forced authentication failures) via a crafted reverse-resolved DNS name (rhost) entry that contains a substring that is interpreted as an IP address, a different vulnerability than CVE-2007-4321.","modified":"2026-01-27T04:09:35.578765Z","published":"2009-02-13T01:30:00Z","withdrawn":"2026-01-27T04:09:35.578765Z","references":[{"type":"ADVISORY","url":"http://secunia.com/advisories/33890"},{"type":"EVIDENCE","url":"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=514163"},{"type":"WEB","url":"http://www.securityfocus.com/bid/33734"}],"schema_version":"1.7.3"}