[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Thu, 18 Feb 2010 17:41:19 +0100
From: Marcus Meissner <meissner@...e.de>
To: oss-security@...ts.openwall.com
Subject: Re: CVE request: kernel information leak via userspace USB interface
On Thu, Feb 18, 2010 at 09:09:15AM +0800, Eugene Teo wrote:
> Hi Marcus,
>
> On 02/17/2010 06:29 PM, Marcus Meissner wrote:
> >While programming a USB device using libusb I found that a usb read from
> >the device returned data it should not.
> [...]
> >Access to USB userspace devices either requires root access or desktop
> >user access
> >via udev/hal ACLs on non-mass-storage Digital Cameras or Media Players.
> >(So the
> >desktop user needs to plugin such a ACL getting device before being able
> >to read the memory).
>
> To abuse this, you will need physical access to plug in a USB device, so
> I do not think this should be regarded as a security issue.
Hmm.
Or you exploit the desktop user and then wait until he plugs in such a device
(ok, kind of a theoretical scenario, lets ignore).
Are we considering "giving desktop local users unintended rights"
a security issue or not?
(Hmm, init=/bin/sh booting and pressing reset might come into
play here too. Then we would not consider that.)
Ciao, Marcus
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
