nanog mailing list archives

Re: update


From: Jim Popovitch <jimpop () gmail com>
Date: Wed, 24 Sep 2014 19:22:14 -0400

On Sep 24, 2014 7:00 PM, <Valdis.Kletnieks () vt edu> wrote:

On Wed, 24 Sep 2014 18:50:05 -0400, Jim Popovitch said:

If someone is already invoking #!/bin/bash from a cgi, then they are
already doing it wrong (bash has massive bloat/overhead for a CGI
script).

You sure you don't have *any* cgi's that do something like
system("mail -s 'cgi program xxyz hit fatal error' webadmin@localhost");
because all it takes is finding a way to force the fatal error while you
send a crafted User-Agent: header....

That won't automatically invoke bash on Debian/Ubuntu....unless someone
intentionally changed default shells....

-Jim P.


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