wzdftpd - missing input sanitising

“kcope” discovered that the wzdftpd FTP server lacks input sanitising
for the SITE command, which may lead to the execution of arbitrary
shell commands.

The old stable distribution (woody) does not contain wzdftpd packages.

For the stable distribution (sarge) this problem has been fixed in
version 0.5.2-1.1sarge1.

For the unstable distribution (sid) this problem has been fixed in
version 0.5.5-1.

We recommend that you upgrade your wzdftpd package.