CERT Advisory CA-2003-15 – A vulnerability in many versions of Cisco IOS could allow an intruder to execute a denial-of-service attack against a vulnerable device.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/31389/CA-2003-15.cisco.txt
Source: https://packetstormsecurity.com/files/31389/CA-2003-15.cisco.txt.html