Vulnerabilities

BisonWare FTP Server 4.1 and earlier allows remote attackers to cause a denial of service via a malformed PORT command that contains a non-numeric character and a large number of carriage returns.

Buffer overflows in Bisonware FTP server prior to 4.1 allow remote attackers to cause a denial of service, and possibly execute arbitrary commands, via long (1) USER, (2) LIST, or (3) CWD commands.

Remote attackers can cause a denial of service in FTP by issuing multiple PASV commands, causing the server to run out of available ports.