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Re: [Xen-devel] Module loading in unpriveledged domains

To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] Module loading in unpriveledged domains
From: David Hopwood <david.nospam.hopwood@xxxxxxxxxxxxxxxx>
Date: Mon, 22 Nov 2004 19:37:56 +0000
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Ian Pratt wrote:
Is there any security risk in enabling loadable module support in the linux
kernel used for the unpriveledged domains? I ask this question in the context of
a virtual private server hosting provider.

There shouldn't be any security risk at all -- Xen should provide
all the isolation you need (modulo any bugs).

So the answer to the original question is, "yes, enabling loadable module
support will increase your exposure to security risks due to any weaknesses
in Xen's isolation." Xen hasn't had particularly extensive security review
yet.

--
David Hopwood <david.nospam.hopwood@xxxxxxxxxxxxxxxx>



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