"cp real.pl evil.pl" is not reason enough to taint $0. Copying the file isn't "evil". It doesn't get you anything. For copying to be of any consequence, it would have to copy both the owner and the setuid bit. But if you can copy the owner, you can already impersonate the owner so it doesn't buy you anything you don't already have.

In reply to Re^6: Taint problems by ikegami
in thread Taint problems by gayathriAthreya

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