Mac OS X 10.4.3 up to 10.4.6, when loginwindow uses the "Name and password" setting, and the "Show the Restart, Sleep, and Shut Down buttons" option is disabled, allows users with physical access to bypass login and reboot the system by entering ">restart", ">power", or ">shutdown" sequences after the username.

bzip2 allows remote attackers to cause a denial of service (hard drive consumption) via a crafted bzip2 file that causes an infinite loop (a.k.a "decompression bomb").