k1tk4t
discovered that wzdftpd, a portable, modular, small and efficient
ftp server, did not correctly handle the receipt of long usernames. This
could allow remote users to cause the daemon to exit.
For the old stable distribution (sarge), this problem has been fixed in version 0.5.2-1.1sarge3.
For the stable distribution (etch), this problem has been fixed in version 0.8.1-2etch1.
For the unstable distribution (sid), this problem has been fixed in version 0.8.2-2.1.
We recommend that you upgrade your wzdftpd package.
MD5 checksums of the listed files are available in the original advisory.