[Full-Disclosure] Re: hard links on Linux create local DoS vulnerability and security problems

[Peter Busser]

Hi!

> And a mandatory system profile in /etc , which aliases ln as 'ln -s' might 
> help.  One for each valid shell.

Security by minimal obstruction. That doesn't protect against people who call
/bin/ln or /usr/bin/ln directly.

If you do not allow access to your home directory by others, then others can't
hardlink to your files.

Groetjes,
Peter Busser
-- 
The Adamantix Project
Taking high-security Linux out of the labs, and into the real world
http://www.adamantix.org/