From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <13426df10802220953q3af4a1aarf93acaaebfedc9b@mail.gmail.com>
Date: Fri, 22 Feb 2008 09:53:15 -0800
From: "ron minnich" <rminnich@gmail.com>
To: "Fans of the OS Plan 9 from Bell Labs" <9fans@cse.psu.edu>
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Subject: [9fans] a challenge
Topicbox-Message-UUID: 5edd56f0-ead3-11e9-9d60-3106f5b1d025

here is a challenge. I realize it's linux but I think this is the
right group to ask anyway; I think you'll appreciate the humor in it.
So far few I have talked to have gotten it.

There is a file, called /bin/bash.

You are allowed to do this as root.
cp this file to /tmp. Do something to it to make it so that, when you
are not root, you can run the file in /tmp and get a root shell.

Don't assume the obvious. And please don't post "that's trivial" until
you have actually done it.

ron