Juniper Networks NetScreen Advisory 59147 – A malicious person who can connect to the SSHv1 service on a Juniper Networks Netscreen firewall can crash the device before having to authenticate. Upon execution of the attack, the firewall will reboot or hang, which will prevent traffic to flow through the device.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/33956/screenos-sshv1-2.txt
Source: https://packetstormsecurity.com/files/33956/screenos-sshv1-2.txt.html