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VID 16126
Severity 30
Port 21
Protocol TCP
Class FTP
Detailed Description The FileZilla Server, according to its banner, has multiple denial of service vulnerabilities which exist in versions prior to 0.9.22. FileZilla Server is a freely available FTP server for Microsoft Windows platforms. FileZilla Server versions prior to 0.9.22 are vulnerable to two vulnerabilities, which can be exploited by remote attackers to cause a denial of service attack.

1) Denial of service vulnerability due to nullpointer dereference
2) Denial of service vulnerability via CWD command without arguments

* Note: This check solely relied on the banner of the remote FTP server to assess this vulnerability, so this might be a false positive.

* References:
http://sourceforge.net/project/shownotes.php?release_id=470364&group_id=21558
http://retrogod.altervista.org/filezilla_0921_dos.html
http://milw0rm.com/exploits/2914

* Platforms Affected:
FileZilla Project, FileZilla Server versions prior to 0.9.22
Microsoft Windows Any version
Recommendation Upgrade to the latest version of FileZilla Server (0.9.22 or later), available from the Sourceforge.net Web site at http://sourceforge.net/project/shownotes.php?release_id=470364&group_id=21558
Related URL CVE-2006-6564,CVE-2006-6565 (CVE)
Related URL 21542,21549 (SecurityFocus)
Related URL (ISS)