Cisco Secure PIX Firewall 5.2(2) allows remote attackers to determine the real IP address of a target FTP server by flooding the server with PASV requests, which includes the real IP address in the response when passive mode is established.Referenceshttp://www.securityfocus.com/bid/1877http://marc.info/?l=bugtraq&m=97059440000367&w=2http://www.osvdb.org/1623https://exchange.xforce.ibmcloud.com/vulnerabilities/5646
