Taint has wide usage, but it only limits passing certain environmental variables through. If the CGI request sets BAD_VAR = rm -rf /, Perl will happily pass that through to your executable without untainting because it doesn't expect your child process will use it (in my understanding).

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re^2: Taint and Shellshock by kennethk
in thread Taint and Shellshock by kennethk

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