Unknown vulnerability in the FTP server (in.ftpd) for Solaris 2.6 through 9 allows remote attackers to cause a denial of service (temporary FTP server hang), which affects other active mode FTP clients.
https://exchange.xforce.ibmcloud.com/vulnerabilities/11186
http://www.securitytracker.com/id?1005996
http://www.securityfocus.com/bid/6709
http://sunsolve.sun.com/search/document.do?assetkey=1-26-50240-1