Um, yeah, bad example, I was only trying to show how easy it is to manipulate $0.

In C it's easy to manipulate argv[0] with the exec family. There are rather more sophisticated attacks as well. I learned a long time ago that you can't trust argv[0] or names in the process table.

In any case, $0 isn't reliable and there's plenty of reasons to taint it, even if cp isn't the reason. I do, however, feel much better knowing that FindBin isn't as unsafe as I first thought.

In reply to Re^7: Taint problems by rowdog
in thread Taint problems by gayathriAthreya

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