Unspecified vulnerability in the FTP subsystem in Sun Java System Web Proxy Server 4.0 through 4.0.5 before SP6 allows remote attackers to cause a denial of service (failure to accept connections) via unknown vectors, probably related to exhaustion of file descriptors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/44413
http://www.vupen.com/english/advisories/2008/2366
http://www.securitytracker.com/id?1020696
http://www.securityfocus.com/bid/30671
http://sunsolve.sun.com/search/document.do?assetkey=1-26-240327-1