A logic error in LoginWindow in Apple Mac OS X 10.4 through 10.4.7, allows network accounts without GUIds to bypass service access controls and log into the system using loginwindow via unknown vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/29293
http://www.vupen.com/english/advisories/2006/3852
http://www.us-cert.gov/cas/techalerts/TA06-275A.html
http://www.securityfocus.com/bid/20271
http://www.kb.cert.org/vuls/id/897628
http://securitytracker.com/id?1016959
http://secunia.com/advisories/22187
http://lists.apple.com/archives/security-announce/2006/Sep/msg00002.html