Directory traversal vulnerability in the Web Calendaring server in Ipswitch Imail 8.13, and other versions before IMail Server 8.2 Hotfix 2, allows remote attackers to read arbitrary files via "..\" (dot dot backslash) sequences in the query string argument in a GET request to a non-existent .jsp file.
http://www.securityfocus.com/bid/13727
http://www.ipswitch.com/support/imail/releases/imail_professional/im82hf2.html
http://www.idefense.com/application/poi/display?id=242&type=vulnerabilities