Re: Symlink vulnerabilities

[Jeffrey Walton <noloader () gmail com>]

On Thu, Oct 27, 2011 at 9:43 AM, xD 0x41 <secn3t () gmail com> wrote:
> [SNIP]
>
> This means that right after the "ln" command AND before "/tmp/dd" is
> launched, the user can replace the directory "/tmp/dd" by a shell script
> with the same name ("/tmp/dd").
>
> You try to change and fiddle here, it would need alot better than just
> the current shell scripting, and, even then, i dnt think it would win
> the race conditiobn.
See Bishop and Dilger's paper:
nob.cs.ucdavis.edu/bishop/papers/1996-compsys/racecond.pdf

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