Re: [Qemu-devel] [PATCH V4 00/13] Proxy FS driver for VirtFS

2011-12-09 Thread M. Mohan Kumar
On Thursday, December 08, 2011 11:16:33 PM Stefan Hajnoczi wrote: > On Mon, Dec 05, 2011 at 09:48:37PM +0530, M. Mohan Kumar wrote: > > From: "M. Mohan Kumar" > > > > Pass-through security model in QEMU 9p server needs root privilege to do > > few file operations (like chown, chmod to any mode/ui

Re: [Qemu-devel] [PATCH V4 00/13] Proxy FS driver for VirtFS

2011-12-08 Thread Stefan Hajnoczi
On Mon, Dec 05, 2011 at 09:48:37PM +0530, M. Mohan Kumar wrote: > From: "M. Mohan Kumar" > > Pass-through security model in QEMU 9p server needs root privilege to do > few file operations (like chown, chmod to any mode/uid:gid). There are two > issues in pass-through security model > > 1) TOCTT

[Qemu-devel] [PATCH V4 00/13] Proxy FS driver for VirtFS

2011-12-05 Thread M. Mohan Kumar
From: "M. Mohan Kumar" Pass-through security model in QEMU 9p server needs root privilege to do few file operations (like chown, chmod to any mode/uid:gid). There are two issues in pass-through security model 1) TOCTTOU vulnerability: Following symbolic links in the server could provide access