Re: Security: information leaks in /proc enable keystroke recovery

David Wagner
2009-08-16T00:53:37Z

Theodore Tso wrote:
> A configuration option which defaults to disabling ESP and EIP would
> be a simple way to prevent this specific instance of information
> leakage. The problem is there are other files that might reveal
> timing information, but which are very useful for a system
> administrator. A key example of this is /proc/$pid/wchan, which is
> responsible for the WCHAN column is a ps listing.

If they're useful for system administrators, would making them
readable to root (but not everyone) be enough?