X2Go Bug report logs - #685
user x2gobroker can evoke any command on X2Go Servers

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Package: python-x2gobroker; Maintainer for python-x2gobroker is (unknown); Source for python-x2gobroker is src:x2gobroker.

Reported by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Date: Tue, 2 Dec 2014 16:15:02 UTC

Severity: important

Tags: pending

Found in version 0.0.3.0-preview

Fixed in version 0.0.3.0

Done: X2Go Release Manager <git-admin@x2go.org>

Bug is archived. No further changes may be made.

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Subject: Bug#685: user x2gobroker can evoke any command on X2Go Servers
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From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
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[Message part 1 (text/plain, inline)]
Package: python-x2gobroker
Severity: important
Version: 0.0.3.0-preview

Currently, x2gobroker-pubkeyauthorizer received SSH public keys from  
the X2Go Session Broker. Those key are stored as-is into  
~x2gobroker/.ssh/authorized_keys.

However, we need to add a force_command option into those pubkey  
lines, so that only x2gobroker-agent can be called via X2Go Session  
Broker.

At the moment user x2gobroker@x2gobroker-machine can issue arbitrary  
commands on the X2Go Server (which is not really painful, but should  
be avoided in general).

Mike

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