Brocade Security Advisory
Blacknurse is a low bandwidth ICMP attack that is capable of doing denial of service to well known firewalls.Most ICMP attacks that we see are based on ICMP Type 8 Code 0 also called a ping flood attack. BlackNurse is based on ICMP with Type 3 Code 3 packets. We know that when a user has allowed ICMP Type 3 Code 3 to outside interfaces, the BlackNurse attack becomes highly effective even at low bandwidth.
Brocade is investigating its product lines to determine which products may be affected by this vulnerability and the impact on each affected product.
Products Confirmed Not Vulnerable
Brocade 5400 vRouter, Brocade 5600 vRouter, Brocade Fabric OS, Brocade FastIron OS, Brocade NetIron OS, Brocade Network Advisor, Brocade Network OS, Brocade SDN Controller, Brocade ServerIron ADX, Brocade Services Director, Brocade SLX-OS, Brocade Virtual ADX, and Brocade Virtual Web Application Firewall are confirmed not affected by this vulnerability.
There are no workarounds that address this vulnerability.
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