[Chicago-talk] chown inside a script

Jonathan Rockway jon at jrock.us
Wed Dec 5 20:38:10 PST 2007

On Wed, 2007-12-05 at 22:28 -0600, Jay Strauss wrote:
> Thanks.
> But I don't think that will work in my case, because I'm doing it from
> a web page, I had to create an suid link to chown, to call from my
> cgi.
> Unless there is some way to do it from inside perl, but still change
> ownership of file not owned by the webserver.

This is a massive security nightmare.  Consider the case where someone
symlinks /path/that/matches/your.glob to /etc/shadow.  You've just
rendered the system unusable.

Also, keep in mind that you can't create a "setuid link".  chmod follows
symlinks and updates the original file.

Jonathan Rockway 
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