Pure-FTPd is a fast, production-quality and standards-compliant FTP server.
Pure-FTPd contains a bug in the accept_client function handling the setup of new connections.
When the maximum number of connections is reached an attacker could exploit this vulnerability to perform a Denial of Service attack.
There is no known workaround at this time. All users are encouraged to upgrade to the latest available version.
All Pure-FTPd users should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=net-ftp/pure-ftpd-1.0.18-r1"
# emerge ">=net-ftp/pure-ftpd-1.0.18-r1"