Unspecified vulnerability in the chtbl_lookup function in hash.c for WzdFTPD 8.0 and earlier allows remote attackers to cause a denial of service via a crafted FTP command, probably due to a NULL pointer dereference.
https://exchange.xforce.ibmcloud.com/vulnerabilities/31599
http://www.vupen.com/english/advisories/2007/0277
http://www.securityfocus.com/archive/1/457454/100/0/threaded
http://www.s21sec.com/avisos/s21sec-033-en.txt
http://securitytracker.com/id?1017537
http://securityreason.com/securityalert/2171
http://secunia.com/advisories/23852
http://lists.grok.org.uk/pipermail/full-disclosure/2007-January/051896.html