Multiple versions of Cisco ONS 15327, ONS 15454, and ONS 15454 SDH, including 4.6(0) and 4.6(1), 4.5(x), 4.1(0) to 4.1(3), 4.0(0) to 4.0(2), and earlier versions, allows remote attackers to cause a denial of service (control card reset) via malformed (1) IP or (2) ICMP packets.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16761
https://exchange.xforce.ibmcloud.com/vulnerabilities/16760
http://www.securityfocus.com/bid/10768
http://www.kb.cert.org/vuls/id/969344
http://www.kb.cert.org/vuls/id/918920
http://www.cisco.com/warp/public/707/cisco-sa-20040721-ons.shtml