[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Bug#524373: linux-2.6: /dev/mem rootkit vulnerability



On Thu, Apr 16, 2009 at 11:55:05AM -0400, Michael S. Gilbert wrote:
> as seen in recent articles and discussions, the linux kernel is
> currently vulnerable to rootkit attacks via the /dev/mem device.  one
> article [1] mentions that there is an existing patch for the problem,
> but does not link to it.  perhaps this fix can be found in the kernel
> mailing lists.

There's no vulnerability there.  /dev/mem is only writable by root.

The research (if there's really any research involved) just shows how
you could hide files or processes by manipulating /dev/mem.  That's been
known for ages.  That's why you don't let your users write to /dev/mem.
If the attacker has root, who cares what means they use to hide their
precese, you've already lost.

noah

Attachment: signature.asc
Description: Digital signature


Reply to: