Juniper NetScreen-Security Manager (NSM) 2004 FP2 and FP3 allow remote attackers to cause a denial of service (crash or hang of server components that are automatically restarted) via a long crafted string on (1) port 7800 (the GUI Server port) or (2) port 7801 (the Device Server port).
http://www.securityfocus.com/bid/16075
http://secunia.com/advisories/18232
http://archives.neohapsis.com/archives/fulldisclosure/2005-12/1281.html