Here is an example of why it is unsafe:

$ perl -MO=Deparse -ce 'BEGIN {print `date`}'
Sat Feb  6 11:58:31 MST 2016
sub BEGIN {
    print `date`;
}
-e syntax OK

[download]

Run that one-liner, and we just executed a system command (date). We could just as easily have executed something malicious.


Dave

In reply to Re: Why is perl -MO=Deparse -f obf.txt unsafe? by davido
in thread Why is perl -MO=Deparse -f obf.txt unsafe? by vpelss

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