X2Go Bug report logs - #336
Don't allow users to override X2Go commands via ~/bin (or similar)

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Package: x2goclient; Maintainer for x2goclient is X2Go Developers <x2go-dev@lists.x2go.org>; Source for x2goclient is src:x2goclient.

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

Date: Tue, 29 Oct 2013 12:41:16 UTC

Severity: important

Tags: pending

Fixed in version 4.0.2.1

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

Bug is archived. No further changes may be made.

Full log


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Date: Tue, 29 Oct 2013 12:41:06 +0000
Message-ID: <20131029124106.Horde.xagnkAt_UswgeDkpr-Foog9@mail.das-netzwerkteam.de>
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: submit@bugs.x2go.org
Subject: Don't allow users to override X2Go commands via ~/bin (or similar)
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Package: x2goclient
Severity: important

In X2Go it is currently possible to replace every command in X2Go  
Server by a command of the same name in ~/bin.

An attacker could use this to infiltrate X2Go Client with arbitrary data.

IMHO, we should make sure, X2Go Client only uses system-wide paths  
when evoking commands on X2Go Servers.

This, of course, will boycott installing X2Go Server into ~<user>  
space, but actually, I prefer a safe setup to such custom installation  
tweaks.

Feedback?!?

Mike
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