The VPN service in Apple Mac OS X 10.3.x through 10.3.9 and 10.4.x through 10.4.8 does not properly clean the environment when executing commands, which allows local users to gain privileges via unspecified vectors.
docs.info.apple.com/article.html?artnum=304829
lists.apple.com/archives/security-announce/2006/Nov/msg00001.html
secunia.com/advisories/23155
securitytracker.com/id?1017304
www.osvdb.org/30727
www.securityfocus.com/bid/21335
www.us-cert.gov/cas/techalerts/TA06-333A.html
www.vupen.com/english/advisories/2006/4750