From mboxrd@z Thu Jan 1 00:00:00 1970 From: Olaf Hering Subject: Re: [PATCH] xenstored: allow guests to reintroduce themselves Date: Tue, 9 Aug 2011 12:49:56 +0200 Message-ID: <20110809104956.GA9131@aepfle.de> References: <4E41070D.8020009@eu.citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <4E41070D.8020009@eu.citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Vincent Hanquez Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org On Tue, Aug 09, Vincent Hanquez wrote: > What about security wise ? Its not about security, just the usual UNIX gun->foot thing. > Guest userspace suddenly becomes able to do this operation (and DoS themself) > where they used to be limited to normal read/write/.. operations. The guest userspace does most likely not talk to xenstored directly. Whatever acts as the proxy could filter the XS_INTRODUCE command. > Also you're changing the C xenstored behavior without changing > the OCaml one. I better leave that to the maintainers of that code. Olaf