Directory traversal vulnerability in Ark 4.7.x and earlier allows remote attackers to delete and force the display of arbitrary files via .. (dot dot) sequences in a zip file.
https://bugzilla.novell.com/show_bug.cgi?id=708268
http://www.ubuntu.com/usn/USN-1276-1
http://seclists.org/fulldisclosure/2011/Oct/351
http://lists.opensuse.org/opensuse-updates/2012-03/msg00002.html