X2Go Bug report logs - #509
Document NX/X11 security issue: clipboard sniffing

Package: wiki.x2go.org; Maintainer for wiki.x2go.org is x2go-dev@lists.x2go.org;

Reported by: Christoph Anton Mitterer <calestyo@scientia.net>

Date: Mon, 1 Jul 2013 02:48:02 UTC

Severity: grave

Tags: security

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Subject: Bug#258: [X2Go-User] Limiting clipboard sharing
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Date: Tue, 28 Jan 2014 17:11:36 +0100
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Hi Mike#1,

On 01/28/2014 04:49 PM, Mike Gabriel wrote:
> There should be two approaches...
>
>   1) disable clipboard server-side for all users
>   2) disable clipboard in X2Go Client / PyHoca-GUI on the client-side
>
> The first is easy. Please look at /usr/bin/x2gostartagent of x2goserver
> package and make clipboard configurable via /etc/x2go/x2goserver.conf.
> Send a patch to our BTS [1].
>

Thank you very much!
The first approach is indeed what is needed in my case.
I will have a look there.

I have been looking through the sources, and my most recent idea was
experimenting with editing /usr/bin/nxagent to run nxagent.bin
with something like "-clipboard no"

I will try the exact approach you are suggesting, though
my bash+awk aren't that good

Many thanks,
Kris

> The second approach is for us devs, I guess...
>
> The workaround provided by Mike#2 is a fine approach, but not a real
> solution to this problem.
>
> Mike#1
>
> [1] http://wiki.x2go.org/doku.php/wiki:bugs

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