The remote host is missing updates announced in advisory TSLSA-2005-0040.
bzip2 (CVE-2005-0758) - SECURITY Fix: Command injection vulnerability in the bzgrep - bzgrep did not handle shell metacharacters like '|' and '&' properly when they occurred in input file names. This could be exploited to execute arbitrary commands with user privileges if bzgrep was run in an untrusted directory with specially crafted file names.
perl-compress-zlib (CVE-2005-1849). - New upstream. - SECURITY Fix: Previous version of Compress::Zlib contains a local vulnerable version of zlib, which may lead to a buffer overflow.
proftpd (CVE-2005-2390) - SECURITY Fix: Format string vulnerabilities - Two vulnerabilities have been reported in ProFTPD, which can be exploited by malicious users to disclose certain sensitive information, cause a DoS (Denial of Service), or potentially compromise a vulnerable system.
Solution: Update your system with the packages as indicated in the referenced security advisory.