[X2Go-Dev] Bug#31: (no subject)

Guillaume Castagnino gcastagnino at denyall.com
Thu Apr 16 15:25:45 CEST 2015


Incidentally, I discovered that sending garbage on that port make the 
client crash and disconnect. So you can remotely disconnect any client 
using x2go client. Kind of DOS isn’t it ?

I discovered it simply doing this:
nmap  -v -n --open -Pn -sSV --version-intensity 0 -p T:1-65535
crashing all x2goclients on the subnet!

Definitely, the proxy should NOT listen on INADDR_ANY but only on 
localhost in SshProcess::tunnelLoop.


Guillaume Castagnino

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