CVE-2000-1169
OpenSSH SSH client before 2.3.0 does not properly disable X11 or agent forwarding, which could allow a malicious SSH server to gain access to the X11 display and sniff X11 events, or gain access to the ssh-agent.
Date published : 2001-01-22
http://www.securityfocus.com/bid/1949
http://archives.neohapsis.com/archives/bugtraq/2000-11/0217.html