netfilter firewalling problems and solutions

ken_i_m at ken_i_m at
Fri Feb 20 18:52:34 PST 2004

On Fri, Feb 20, 2004 at 05:30:19PM -0500, Robert Connolly (cendres at wrote:
> There is an old post, maybe to security@ from decemberish. I think there is a 
> way to hardlink to an suid binary, so if its deinstalled and reinstalled, the 
> user can run the old binary, which might be lacking security fixes that are 
> in the new one. I've also seen this attack described on the coreutils ml.

The hardlink attack was the solution to a hack challenge posted <somewhere> 
last fall.
I think, therefore, ken_i_m
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