Re: security warning

Jon Lewis (jlewis@inorganic5.fdt.net)
Tue, 16 Dec 1997 12:39:01 -0500 (EST)


On Tue, 16 Dec 1997, Alan Cox wrote:

> > I would strongly suggest the following patch:
> > ftp://ftp.fuller.edu/Linux/symlink-attack-patch-2.1.71
> > I hope that patch gets in the kernel soon, default to "Y".
>
> Why do we want a patch breaking symbolic links and several applications.
> Fix the applications or fix the use of /tmp even better still.

What applications break? I've heard lots of warnings of "applications
will break", but not actually experienced any. The same can be said for
the non-executable stack patch. I know it may cause problems with libc6,
but as long as I'm using libc5, the extra layer of security it provides is
invaluable. I know for a fact that it's saved me from 2 attempts at
cracking root. Not only did it stop them...but it also gave me immediate
notification that I had an univited guest.

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