CVE-2006-7094
ftpd, as used by Gentoo and Debian Linux, sets the gid to the effective uid instead of the effective group id before executing /bin/ls, which allows remote authenticated users to list arbitrary directories with the privileges of gid 0 and possibly enable additional attack vectors.
Date published : 2007-02-28
http://www.securityfocus.com/archive/1/460742/100/0/threaded