Microsoft Outlook 2000 does not properly process long or malformed fields in vCard (.vcf) files, which allows attackers to cause a denial of service.Referenceshttp://www.securityfocus.com/bid/1633http://www.securityfocus.com/templates/archive.pike?list=1&msg=Springmail.105.967737080.0.16997300%40www.springmail.com