The hack-local-variables function in Emacs before 22.2, when enable-local-variables is set to :safe, does not properly search lists of unsafe or risky variables, which might allow user-assisted attackers to bypass intended restrictions and modify critical program variables via a file containing a Local variables declaration.
bugs.debian.org/cgi-bin/bugreport.cgi?bug=449008
bugs.gentoo.org/show_bug.cgi?id=197958
cvs.savannah.gnu.org/viewvc/emacs/emacs/lisp/files.el?r1=1.896.2.28&r2=1.896.2.29
docs.info.apple.com/article.html?artnum=307562
lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
osvdb.org/42060
secunia.com/advisories/27508
secunia.com/advisories/27627
secunia.com/advisories/27728
secunia.com/advisories/27984
secunia.com/advisories/29420
security.gentoo.org/glsa/glsa-200712-03.xml
www.mandriva.com/security/advisories?name=MDVSA-2008:034
www.securityfocus.com/bid/26327
www.ubuntu.com/usn/usn-541-1
www.vupen.com/english/advisories/2007/3715
www.vupen.com/english/advisories/2008/0924/references
exchange.xforce.ibmcloud.com/vulnerabilities/38263
www.redhat.com/archives/fedora-package-announce/2007-November/msg00524.html