vt100's and some xterms have softkeys that can be set with escape codes.Back in
the 80's when we had vt100's on pdp11's and vaxen in the office, we sometimes
played tricks on each other by reprogramming terminals through escape codes.In
theory, if poppler writes raw data from a pdf in an error message, someone
could create a pdf that would lead poppler to redefine a function key (or maybe
even the "enter" key) to generate a malicious command.It is an issue for anyone
who runs programs using poppler at a command line.William
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