CVE-1999-1077 - Tightly knit Navigations
Description
Idle locking function in MacOS 9 allows local attackers to bypass the password protection of idled sessions via the programmer’s switch or CMD-PWR keyboard sequence which brings up a debugger that the attacker can use to disable the lock.
Reference
http://www.securityfocus.com/bid/756 http://marc.info/?l=bugtraq&m=94149318124548&w=2