CVE-2003-1004
Cisco PIX firewall 6.2.x through 6.2.3, when configured as a VPN Client, allows remote attackers to cause a denial of service (dropped IPSec tunnel connection) via an IKE Phase I negotiation request to the outside interface of the firewall.
Date published : 2003-12-17
http://www.cisco.com/warp/public/707/cisco-sa-20031215-pix.shtml