Cisco CSS WebNS ssh crash

Undocument bug on Cisco CSS series 11000 with Webns 8.20.0.1

Cisco CSS series 11000 with webns system and ssh daemon crash on ssh
crc32 old 2001 exploit

Cisco CSS :
Webns Version: 08.20.0.01 (using command sh ver)
SSH Version: SSHield version 1.6.1, SSH version OpenSSH_3.0.2p1 (using
command sh sshd version)

CSS is default configured with max 5 concurrency session

with old shack exploit css does not relase connection and when it get 5
connection it crashes with no other possibility of connection

Alessandro Fiorenzi aka NetExpress