sudoedit (aka sudo -e) in sudo 1.6.8 opens a temporary file with root privileges, which allows local users to read arbitrary files via a symlink attack on the temporary file before quitting sudoedit.
marc.info/?l=bugtraq&m=109537972929201&w=2
packetstormsecurity.nl/0409-exploits/sudoedit.txt
secunia.com/advisories/12596
www.ciac.org/ciac/bulletins/o-219.shtml
www.kb.cert.org/vuls/id/424358
www.osvdb.org/10023
www.securityfocus.com/bid/11204
www.sudo.ws/sudo/alerts/sudoedit.html
exchange.xforce.ibmcloud.com/vulnerabilities/17424