Directory traversal vulnerability in Marshal MailMarshal SMTP 5.x, 6.x, and 2006, and MailMarshal for Exchange 5.x, allows remote attackers to write arbitrary files via ".." sequences in filenames in an ARJ compressed archive.
https://exchange.xforce.ibmcloud.com/vulnerabilities/30188
http://www.zerodayinitiative.com/advisories/ZDI-06-039.html
http://www.vupen.com/english/advisories/2006/4457
http://www.securityfocus.com/bid/20999
http://www.securityfocus.com/archive/1/451143/100/0/threaded
http://www.marshal.com/kb/article.aspx?id=11450
http://securitytracker.com/id?1017209