FileZilla Server before 0.9.22 allows remote attackers to cause a denial of service (crash) via a wildcard argument to the (1) LIST or (2) NLST commands, which results in a NULL pointer dereference, a different set of vectors than CVE-2006-6564. NOTE: CVE analysis suggests that the problem might be due to a malformed PORT command.
https://exchange.xforce.ibmcloud.com/vulnerabilities/30853
http://www.vupen.com/english/advisories/2006/4937
http://sourceforge.net/project/shownotes.php?release_id=470364&group_id=21558