CVE-2008-1199
Dovecot before 1.0.11, when configured to use mail_extra_groups to allow Dovecot to create dotlocks in /var/mail, might allow local users to read sensitive mail files for other users, or modify files or directories that are writable by group, via a symlink attack.
Date published : 2008-03-06
http://www.securityfocus.com/bid/28092
http://www.securityfocus.com/archive/1/489133/100/0/threaded