CVE-2008-0037
X11 in Apple Mac OS X 10.5 through 10.5.1 does not properly handle when the "Allow connections from network client" preference is disabled, which allows remote attackers to bypass intended access restrictions and connect to the X server.
Date published : 2008-02-12
http://lists.apple.com/archives/security-announce/2008/Feb/msg00002.html