[X2Go-Dev] Bug#773: DirectRDP: X2Go Client reveals user password in process list if xfreerdp is used

[Mike Gabriel]

Package: x2goclient
Severity: grave

When a users uses X2Go Client for directly accessing an RDP Server,  
then one can use the DirectRDP feature.

The DirectRDP features allows wrapping around the rdesktop command or  
the xfreerdp command.

With both wrapper modes, the password is given to the RDP client  
application on the command line.

With rdesktop, the command line ($@) gets rewritten for the process  
list and the password is replaced by XXXXXXXX.

With xfreerdp, the command line stays as is and reveals the RDP user's  
password on the process list of the machine that X2Go Client runs on.

The FreeRDP people have added a command line option --from-stdin to  
xfreerdp 1.0.x for this purpose, that may be an option using in X2Go  
Client. However, I am not sure, if this option survived in xfreerdp  
1.1.x or later (it is not on the xfreerdp man page for  
1.1.0~git<sometime-in-2014> as shipped with Debian jessie.

Mike



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