Secunia Security Advisory – Fernando Gont has published an Internet-Draft describing how ICMP (Internet Control Message Protocol) can be exploited by malicious people to cause a DoS (Denial of Service). Cisco has acknowledged that various Cisco products are affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/37143/sa14904.txt
Source: https://packetstormsecurity.com/files/37143/Secunia-Security-Advisory-14904.html