lisp/files.el in Emacs 23.2, 23.3, 23.4, and 24.1 automatically executes eval forms in local-variable sections when the enable-local-variables option is set to :safe, which allows user-assisted remote attackers to execute arbitrary Emacs Lisp code via a crafted file.
debbugs.gnu.org/cgi/bugreport.cgi?bug=12155
lists.opensuse.org/opensuse-updates/2012-10/msg00057.html
secunia.com/advisories/50157
secunia.com/advisories/50801
www.debian.org/security/2013/dsa-2603
www.mandriva.com/security/advisories?name=MDVSA-2013:076
www.openwall.com/lists/oss-security/2012/08/13/1
www.openwall.com/lists/oss-security/2012/08/13/2
www.securityfocus.com/bid/54969
www.securitytracker.com/id?1027375
www.slackware.com/security/viewer.php?l=slackware-security&y=2012&m=slackware-security.420006
www.ubuntu.com/usn/USN-1586-1