The SmartScan feature in the Auto-Protect module for Symantec Norton AntiVirus 2004 and 2005, as also used in Internet Security 2004/2005 and System Works 2004/2005, allows attackers to cause a denial of service (CPU consumption and system crash) by renaming a file on a network share.
http://www.securityfocus.com/bid/12924
http://www.kb.cert.org/vuls/id/713620
http://securitytracker.com/id?1013587
http://securitytracker.com/id?1013586
http://securitytracker.com/id?1013585
http://securityresponse.symantec.com/avcenter/security/Content/2005.03.28.html