Multiple directory traversal vulnerabilities Merak Mail Server 7.4.5 with Icewarp Web Mail 5.2.7, and possibly other versions, allow remote attackers to (1) create arbitrary directories via a .. (dot dot) in the user parameter to viewaction.html or (2) rename arbitrary files via a ....// (doubled dot dot) in the folderold or folder parameters to folders.html.
https://exchange.xforce.ibmcloud.com/vulnerabilities/17314
http://www.securityfocus.com/bid/11371