CVE-2005-1021
Memory leak in Secure Shell (SSH) in Cisco IOS 12.0 through 12.3, when authenticating against a TACACS+ server, allows remote attackers to cause a denial of service (memory consumption) via an incorrect username or password.
Date published : 2005-04-09
http://www.securityfocus.com/bid/13042
http://www.cisco.com/warp/public/707/cisco-sa-20050406-ssh.shtml